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senior front end engineer

Medsien Inc.

<div>Medsien is the leading provider of scalable remote care management for a quality patient experience. Hundreds of organizations trust Medsien's unparalleled technology solutions to implement exceptional remote care management programs, personalize every interaction, and improve the lives of the people who need it most. Based in San Francisco and venture-backed by top-tier investors, Medsien was founded to reimagine remote care management.

More than 60% of all U.S. adults&mdash;over 150 million people&mdash;live with at least one chronic condition, which requires dedicated, ongoing medical support outside the four walls of their doctor's office. And yet, only 20% of these patients have access to remote care from the comfort of their homes, putting their health at significant risk. Together, we can save lives and create a real impact.

Medsien is a venture-backed healthcare SaaS company experiencing rapid growth and looking to expand our team. We are seeking an experienced, organized, motivated, and passionate Front-End Engineer to join our team of talented and inspiring developers in a fast-paced environment.

As a Front-End Engineer, you'll work on new, exciting projects with complete autonomy. We're seeking a candidate who is passionate about building new applications from the ground up and who will join a growing team in developing products that enable providers to deliver high-quality services to their patients.

As a Front-End Engineer, you will:
<ul>
<li>Collaborate with UX designers and backend engineers to develop and maintain responsive single-page applications using React.</li>
<li>Provide technical guidance and mentorship.</li>
<li>Optimize application performance.</li>
<li>Develop and maintain reusable components and libraries.</li>
<li>Write clean, well-documented code that is scalable and maintainable.</li>
<li>Participate in code reviews and contribute to continuous improvement.</li>
<li>Keep up-to-date with emerging front-end technologies and industry trends.</li>
<li>Work closely with product managers to ensure the timely delivery of high-quality work.</li>
<li>Collaborate with UI/UX designer to ensure designs are technically feasible and user-friendly.</li>
<li>Understand how code fits into broader technical and/or business contexts.</li>
<li>Actively participate in code review and technical design reviews.</li>
<li>Work on medium to large projects.</li>
<li>Participate in all system/component implementation and design from development to production.</li>
<li>Research new technologies and prototype new ideas.</li>
<li>Ensure high testability and quality of delivered software.</li>
<li>Work with internal stakeholders to troubleshoot and fix defects in software.</li>
<li>Participate in building Scrum processes and agile culture within the company.</li>
</ul>
Please apply if you have:
<ul>
<li>Minimum 4 years of Front-End Engineering experience,</li>
<li>Strong knowledge and experience in front-end technologies, particularly React, Typescript, and Javascript.</li>
<li>Experience working with Redux-toolkit for state management.</li>
<li>Experience with integrating Restful APIs and WebSockets.</li>
<li>Proficiency in MUI for creating visually appealing and responsive designs.</li>
<li>Desire to write clean and reusable code to maintain high code quality.</li>
<li>Ability to use Figma for creating Pixel-Perfect implementations.</li>
<li>Familiarity with version control systems such as Git.</li>
<li>Perfect English skills, both written and oral.</li>
<li>Residence in central Istanbul.</li>
</ul>
For this position, we offer:
<ul>
<li>competitive USD salary and stock options,</li>
<li>Flexible vacation and PTO policies,</li>
<li>Fully remote work opportunities,</li>
<li>Training, mentorship, and coaching from leadership.</li>
</ul>
Please bear in mind that:
<ul>
<li>This is a permanent-term contractor job opportunity with Medsien Inc.
</li><li>Due to in-person collaboration requirements, candidates based in Istanbul are preferred.</li>
<li>All interviews will be conducted in English and the candidates having less than advanced level of English will be directly eliminated from the process regardless of their technical skills and expertise.</li>
</ul>
Our Process

We will review your application along with all the others we receive and pick the top profiles for a screening call. In many cases due to time constraints and our candidate volume, only the short-listed candidates are contacted but we do consider each application carefully. If you have been selected as a short-listed candidate, we will contact you for a short screening call to get to know you better. If you don't get a call, please don't be disappointed! We receive many applications for each role and must prioritize who we speak to.

Employment at Medsien is based solely on a person's merit and qualifications. We are committed to providing equal employment opportunity regardless of sex, age, race, color, national or ethnic origin, religion, marital status, pregnancy, sexual orientation, gender identity or expression, disability, age, citizenship, veteran or military status, and other legally protected characteristics.

Thank you for taking the time to apply for a position at Medsien!

Please visit the below links for GDPR details:

https://www.medsien.com/legal/employee-candidate-information-notice

https://www.medsien.com/legal/employee-candidate-explicit-consent-statement</div>

Senior Front-End Engineer

COVERGO

<div>Top 3 Reasons To Join Us<ul>
<li>
Competitive Salary</li>
<li>International Environment</li>
<li>Working on the latest tech for the Insurtech Market Leader</li>
</ul>
About Us
At CoverGo, our mission is to empower all insurance companies to make insurance 100% digital and accessible to everyone.<ul>
<li>
We are a leading global no-code insurance platform for health, life, and P&amp;C</li>
<li>We&rsquo;re the winner of the Insurtech of the Year in all of Asia and other awards globally</li>
<li>We work with insurance enterprise clients such as AXA, Bupa, MSIG, Dai-ichi, Bank of China Group Insurance, and many more</li>
<li>We're an international, diverse team of over 120 people with 30 nationalities and team members working remotely from all over the world</li>
<li>We are fully funded and backed by reputable VC funds and strategic institutional investors</li>
<li>We have a global presence in Asia, EMEA and the Americas</li>
<li>We&rsquo;ve grown our annualized revenue by over 30x since January 2021</li>
<li>We&rsquo;re constantly working towards making CoverGo a workplace that you love coming to. We deeply believe that bringing together a diversity of thoughts, expressions, and perspectives is key to building the best culture for equally diverse communities all over the world</li>
</ul>
What You Will Do<ul>
<li>
Design, implement and maintain new features and functionalities for the SAAS platform, understanding the requirements of insurance businesses and translating them into scalable and efficient software solutions</li>
<li>Work on both the front-end and back-end of the application, demonstrating expertise in various technologies, frameworks, and programming languages</li>
<li>Work collaboratively with product, design, engineering teams, and UX designers to understand end-user requirements, use cases, and technical concepts, translating them into a cohesive and effective solution while ensuring a seamless user experience.</li>
<li>Optimize the performance of the application to handle large amounts of data and high user traffic, delivering a smooth user experience</li>
<li>Participate in code reviews and enforce best coding practices, while also writing and executing unit tests and integration tests to maintain code quality</li>
<li>Investigate and promptly fix bugs to maintain the reliability of the platform</li>
<li>Ensure security and compliance by following best practices for securing web applications and adhering to relevant regulations in handling sensitive customer data</li>
<li>Stay up-to-date with the latest technologies, frameworks, and best practices to ensure we remain competitive and innovative</li>
<li>Design the platform with scalability and flexibility in mind, accommodating new features and changes as the number of clients and users grows</li>
<li>Provide mentorship to junior developers, aiding in their technical growth and effective contribution to the team's goals</li>
</ul>
What We Need<ul>
<li>
Proven experience 6 years as a Full Stack Engineer, working on complex SAAS applications</li>
<li>Strong technical background with proficiency in front-end and back-end technologies, such as JavaScript, Vue, .NET Core, C#, GraphQL, MongoDB, Docker</li>
<li>Familiarity with cloud platforms like AWS, Azure, or Google Cloud for building scalable applications</li>
<li>Thorough understanding and practical experience with Test-Driven Development (TDD) to ensure robust and well-tested code</li>
<li>Experience with unit, integration and function testing using front-end and back-end testing libraries</li>
<li>Proficiency in Domain-Driven Design (DDD) principles to create a maintainable and modular architecture that aligns with business domains</li>
<li>In-depth knowledge of web security best practices and experience in ensuring compliance with industry regulations</li>
<li>Demonstrated experience in performance optimization for high-traffic web applications</li>
<li>Experience with container technologies like docker and good understanding of cloud infrastructure and solutions.</li>
<li>Experience with agile development methodologies and collaborating with cross-functional teams</li>
<li>Excellent problem-solving skills and a proactive approach to troubleshooting and bug fixing</li>
<li>Strong communication skills to effectively interact with both technical and non-technical team members with diverse backgrounds</li>
<li>A passion for staying updated with the latest trends, technologies, and best practices in software development</li>
</ul>
Why You'll Love Working Here<ul>
<li>
Competitive renumeration package</li>
<li>International Environment</li>
<li>15 days annual leave, 10 sick leaves, special leaves</li>
<li>Annual Performance Bonus</li>
<li>Stock Options after 6 months</li>
<li>Company activities and events</li>
<li>Learning and development plan</li>
</ul>
CoverGo Company Video
By submitting your application, you confirm that you have read, understood, and accepted the content of CoverGo&rsquo;s Privacy Notice and you consent to the processing of your data as part of this application.</div>

Senior Full Stack Engineer (.NET & Vue/React) - Fully Remote

Hack The Box

<div><h3 class="jobSectionHeader">Ready to embark on the quest of joining Hack The Box?</h3>
At the end of this thrilling journey, you'll become a proud member of Hack The Box, with the ultimate mission to help redefine cybersecurity expertise. Get ready for an exciting adventure into the world of cybersecurity!<h3 class="jobSectionHeader">
&#10024;The core mission of the Senior Django Engineer:</h3>
We are on the lookout for our next backend engineer in LetsDefend team. Let&rsquo;s Defend is a cutting-edge cybersecurity training company dedicated to empowering blue-team professionals by simulating a real Security Operations Center (SOC). It has a community of over 320,000 members across 150+ countries fosters peer learning and collaboration.
Hack The Box and LetsDefend join forces to create the world&rsquo;s largest collaborative cybersecurity platform with hands-on labs, SOC simulations, and a unified upskilling experience.
This role will focus on enhancing backend performance and scalability, strengthening code quality and reliability, and leading architectural direction across teams. The software engineer will play a key role in improving system efficiency, reducing issues, and fostering alignment with frontend, mobile, and DevOps counterparts. Additionally, they will own and deliver impactful backend features that support major product goals and contribute to the platform&rsquo;s long-term growth.
 Location &amp; Work Mode:<ul>
<li>
Options: Turkiye or Greece</li>
<li>Fully Remote - If only in Greece: When hiring in Greece, we&rsquo;re open to candidates from all locations. Those based within 55 km of our Athens office will follow a hybrid work model. For candidates located beyond that radius, a fully remote arrangement is available.</li>
</ul><h3 class="jobSectionHeader"> The fellowship you&rsquo;ll be joining:
</h3>
The new joiner will be part of a lean software engineering team composed of three members: one Senior Backend Developer, one Mid-Level Frontend Developer, and one Mobile Developer. In this role, they will collaborate closely not only with their immediate teammates, but also with key stakeholders across the organization, including the Content Engineering team, Sales team, Infrastructure, and the broader Engineering team, all of whom play a critical role in supporting the product and its customers. This position will report directly to the Sr. Director of Engineering.<ul><li>&#65039; Technology tools &amp; weapons you&rsquo;ll be using:</li></ul><ul>
<li>Django Framework (Python language)</li>
<li>Docker</li>
<li>Apache Kafka</li>
<li>Redis</li>
<li>Git</li>
</ul><h3 class="jobSectionHeader"> Interesting resources you should check:</h3><ul>
<li>Take a look at LetsDefend Website</li>
<li>Hack The Box + LetsDefend: Shaping the future of community-led cyber readiness</li>
</ul><h3 class="jobSectionHeader"> The adventures that await you after becoming Senior Django Engineer:
</h3><ul><li>Optimize backend performance by improving API responsiveness, refining database queries, and enhancing caching strategies.</li>
<li>Design scalable backend architectures and influence long-term technical direction across multiple products and services.</li>
<li>Implement high-quality, maintainable code with strong test coverage and adherence to best practices.</li>
<li>Refactor legacy components into clean, modular, and future-ready services that accelerate development.</li>
<li>Collaborate closely with frontend, mobile, DevOps, and product teams to ensure smooth execution of cross-functional projects.</li>
<li>Lead technical discussions, produce clear design documents, and guide the team on architectural patterns.</li>
<li>Troubleshoot production issues rapidly and improve system reliability through monitoring, logging, and error reduction.</li>
<li>Deliver high-impact backend features that directly support product growth, user engagement, and business goals</li>
</ul><h3 class="jobSectionHeader"> Skills, knowledge, and experience points required to unlock the role of Senior Django Engineer:</h3><ul>
<li>Expert-level proficiency in Django &amp; Django REST Framework, including ORM optimization, class-based views, and advanced API design.</li>
<li>Hands-on experience with asynchronous task processing, ideally Celery + Redis/RabbitMQ, and deep understanding of reliability patterns.</li>
<li>Ability to design scalable backend architectures, including caching layers, service boundaries, and performance bottleneck prevention.</li>
<li>Solid understanding of backend security practices, including authentication, authorization, rate-limiting, and secure data handling.</li>
<li>Proven track record of owning and delivering complex backend features, including writing technical designs and mentoring other engineers.</li>
<li>Good knowledge of English language (verbal and written)</li>
</ul>
Bonus points:<ul>
<li>
Experience with AWS or other cloud platforms</li>
<li>Knowledge of Docker or containerization</li>
<li>Exposure to event streaming technologies such as Apache Kafka</li>
</ul><h3 class="jobSectionHeader">&#65039; What your adventure will have in store:</h3>
<ul><li>You'll have the exhilarating opportunity to contribute to a product that is highly appreciated by users and the cybersecurity community at large.</li>
<li> You'll experience a highly supportive and caring environment, fostering growth, flexibility, and autonomy.</li>
<li> You'll embark on an exciting journey of continuous learning and problem-solving, leveling up as our organization grows.</li>
 Most importantly, you'll have a blast at HTB<li> because fun is an essential ingredient in our recipe for success! Just wait until you see our global meet-ups!</li>
</ul><h3 class="jobSectionHeader">The gems you&rsquo;ll be enjoying as a Senior Django Engineer:</h3><ul>
<li>25 annual leave days</li>
<li>Paid paternity leave</li>
<li>Dedicated budget for training and professional development, participation in conferences</li>
Full access to the Hack The Box lab offerings; so you can learn how to hack
<li>State-of-the-art equipment (mac, iPhone, and mobile plan)</li>
</ul>
Our benefits package is designed to provide strong support to our team, but it may vary depending on location and type of employment (e.g., UK, Greece, or engagement through an Employer
<h3 class="jobSectionHeader">&#65039; The Quest of Becoming Senior Django Engineer:</h3><ul>
<li>Level 1: To complete level one&rsquo;s objective, submit your application.</li>
<li>Level 2: Meet the Talent Acquisition team. Level&rsquo;s objective: highlight your past achievements, ambitions, and values.</li>
<li>Level 3: Meet the hiring team. Level&rsquo;s objective: connect with the hiring team and share with them your achievements.</li>
<li>Level 4: Meet the hiring team, once again, to explore your leadership mindset and values alignment with HTB.</li>
Level 5: Congratulations! Not many reach this level <li>. Level&rsquo;s objective: have a constructive, final conversation with senior leadership to explore the role and your future at HTB.</li>
<li>Level 6: You've officially received an offer from HTB! To complete the last level and the Quest, all you need to do is accept the offer.</li>
Quest complete. Congratulations, you&rsquo;re officially one of us Your next quest: complete the onboarding. 
<li>
</li>
</ul>Hack Your Career, Today. Join us in this epic adventure of cybersecurity at Hack The Box!<h3 class="jobSectionHeader">
ABOUT HACK THE BOX</h3>
Hack The Box is the leading cybersecurity readiness and upskilling platform, trusted by enterprises, government organizations, and MSSPs to build cyber resilience at scale. Through AI-enhanced intelligence, gamified labs, live-fire simulations, and the power of one of the world&rsquo;s largest cybersecurity communities, Hack The Box helps teams master offensive and defensive skills in real-world scenarios. Founded in 2017, Hack The Box has grown its global community of over 4 million members, helping organizations validate resilience, mitigate breach risk, and develop cyber talent. For more information, visit hackthebox.com
Rapidly growing its international footprint and reach, Hack The Box is headquartered in the UK, with additional offices in the US, Australia, and Greece.
 News &amp; Resources:<ul>
<li>
Get the most important updates on HTB&rsquo;s latest year!</li>
<li>We&rsquo;re incredibly proud to share that our headquarters in the UK, along with our entities in Greece and the US, have been certified as a Great Place to Work for three consecutive years (2023 - 2025).</li>
<li>In addition, our Greek entity has been recognized among the Best Workplaces in Greece (4th, 2nd, 3rd) and Europe (7th, 10th, 73rd) during this period &mdash; a testament to our strong culture and commitment to creating an exceptional employee experience!</li>
</ul>
Take a sneak peek at how it is to be part of HTB and our 2023 Global Retreat. Get more insights about our HTB culture and employee experience by visiting the &ldquo;about us&rdquo; section of our site, our career site, and Glassdoor.
At Hack The Box, we are committed to fostering a diverse, inclusive, and equitable workplace. We believe that diversity enriches our performance, services, and the communities we serve. As such, we ensure that all job applications are considered solely based on merit, skills, and qualifications. We do not discriminate on grounds of race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. We are dedicated to providing a fair and respectful work environment that reflects our values.</div>

Senior Django Engineer

<div>
 
 
 Ready to embark on the quest of joining Hack The Box?
 
 
 
 At the end of this thrilling journey, you'll become a proud member of Hack The Box, with the ultimate mission to help redefine cybersecurity expertise. Get ready for an exciting adventure into the world of cybersecurity! 🚀🔒💻
 
 
 
 ✨The core mission of the Senior Django Engineer:
 
 
 
 We are on the lookout for our next backend engineer in LetsDefend team. Let&rsquo;s Defend is a cutting-edge cybersecurity training company dedicated to empowering blue-team professionals by simulating a real Security Operations Center (SOC). It has a community of over 320,000 members across 150+ countries fosters peer learning and collaboration.
 
 
 Hack The Box and LetsDefend join forces to create the world&rsquo;s largest collaborative cybersecurity platform with hands-on labs, SOC simulations, and a unified upskilling experience.
 
 
 This role will focus on enhancing backend performance and scalability, strengthening code quality and reliability, and leading architectural direction across teams. The software engineer will play a key role in improving system efficiency, reducing issues, and fostering alignment with frontend, mobile, and DevOps counterparts. Additionally, they will own and deliver impactful backend features that support major product goals and contribute to the platform&rsquo;s long-term growth.
 
 
 
 🏢 Location &amp; Work Mode:
 
 
 <ul>
 <li>
 Options: Turkiye or Greece
 </li>
 <li>
 Fully Remote - If only in Greece: When hiring in Greece, we&rsquo;re open to candidates from all locations. Those based within 55 km of our Athens office will follow a hybrid work model. For candidates located beyond that radius, a fully remote arrangement is available.
 </li>
 </ul>
 
 
 
 
 🍺
 
 The fellowship you&rsquo;ll be joining:
 
 
 
 The new joiner will be part of a lean software engineering team composed of three members: one Senior Backend Developer, one Mid-Level Frontend Developer, and one Mobile Developer. In this role, they will collaborate closely not only with their immediate teammates, but also with key stakeholders across the organization, including the Content Engineering team, Sales team, Infrastructure, and the broader Engineering team, all of whom play a critical role in supporting the product and its customers. This position will report directly to the Sr. Director of Engineering.
 
 
 
 
 
 
 ⚔️ Technology tools &amp; weapons you&rsquo;ll be using:
 
 
 <ul>
 <li>
 Django Framework (Python language)
 </li>
 <li>
 Docker
 </li>
 <li>
 Apache Kafka
 </li>
 <li>
 Redis
 </li>
 <li>
 Git
 </li>
 </ul>
 
 
 
 
 
 📚 Interesting resources you should check:
 
 
 <ul>
 <li>
 Take a look at LetsDefend Website
 </li>
 <li>
 Hack The Box + LetsDefend: Shaping the future of community-led cyber readiness
 </li>
 </ul>
 
 
 
 
 🚀
 
 The adventures that await you after becoming Senior Django Engineer:
 
 
 <ul>
 <li>
 Optimize backend performance by improving API responsiveness, refining database queries, and enhancing caching strategies.
 </li>
 <li>
 Design scalable backend architectures and influence long-term technical direction across multiple products and services.
 </li>
 <li>
 Implement high-quality, maintainable code with strong test coverage and adherence to best practices.
 </li>
 <li>
 Refactor legacy components into clean, modular, and future-ready services that accelerate development.
 </li>
 <li>
 Collaborate closely with frontend, mobile, DevOps, and product teams to ensure smooth execution of cross-functional projects.
 </li>
 <li>
 Lead technical discussions, produce clear design documents, and guide the team on architectural patterns.
 </li>
 <li>
 Troubleshoot production issues rapidly and improve system reliability through monitoring, logging, and error reduction.
 </li>
 <li>
 Deliver high-impact backend features that directly support product growth, user engagement, and business goals
 </li>
 </ul>
 
 
 
 
 
 🏆 Skills, knowledge, and experience points required to unlock the role of Senior Django Engineer:
 
 
 <ul>
 <li>
 Expert-level proficiency in Django &amp; Django REST Framework, including ORM optimization, class-based views, and advanced API design.
 </li>
 <li>
 Hands-on experience with asynchronous task processing, ideally Celery + Redis/RabbitMQ, and deep understanding of reliability patterns.
 </li>
 <li>
 Ability to design scalable backend architectures, including caching layers, service boundaries, and performance bottleneck prevention.
 </li>
 <li>
 Solid understanding of backend security practices, including authentication, authorization, rate-limiting, and secure data handling.
 </li>
 <li>
 Proven track record of owning and delivering complex backend features, including writing technical designs and mentoring other engineers.
 </li>
 <li>
 Good knowledge of English language (verbal and written)
 </li>
 </ul>
 
 
 Bonus points:
 
 
 <ul>
 <li>
 Experience with AWS or other cloud platforms
 </li>
 <li>
 Knowledge of Docker or containerization
 </li>
 <li>
 Exposure to event streaming technologies such as Apache Kafka
 </li>
 </ul>
 
 
 
 
 
 🕹️ What your adventure will have in store:
 
 
 <ul>
 <li>
 🎯You'll have the exhilarating opportunity to contribute to a product that is highly appreciated by users and the cybersecurity community at large.
 </li>
 <li>
 🎯 You'll experience a highly supportive and caring environment, fostering growth, flexibility, and autonomy.
 </li>
 <li>
 🎯 You'll embark on an exciting journey of continuous learning and problem-solving, leveling up as our organization grows.
 </li>
 <li>
 🎯 Most importantly, you'll have a blast at HTB 🥳 because fun is an essential ingredient in our recipe for success! Just wait until you see our global meet-ups!
 </li>
 </ul>
 
 
 
 
 
 💰The gems you&rsquo;ll be enjoying as a Senior Django Engineer:
 
 
 <ul>
 <li>
 25 annual leave days
 </li>
 <li>
 Paid paternity leave
 </li>
 <li>
 Dedicated budget for training and professional development, participation in conferences
 </li>
 <li>
 Full access to the Hack The Box lab offerings; so you can learn how to hack 😉
 </li>
 <li>
 State-of-the-art equipment (mac, iPhone, and mobile plan)
 </li>
 </ul>
 
 
 Our benefits package is designed to provide strong support to our team, but it may vary depending on location and type of employment (e.g., UK, Greece, or engagement through an Employer of Record).
 
 
 
 
 
 
 
 🗺️ The Quest of Becoming Senior Django Engineer:
 
 
 <ul>
 <li>
 Level 1: To complete level one&rsquo;s objective, submit your application.
 </li>
 <li>
 Level 2: Meet the Talent Acquisition team. Level&rsquo;s objective: highlight your past achievements, ambitions, and values.
 </li>
 <li>
 Level 3: Meet the hiring team. Level&rsquo;s objective: connect with the hiring team and share with them your achievements.
 </li>
 <li>
 Level 4: Meet the hiring team, once again, to explore your leadership mindset and values alignment with HTB.
 </li>
 <li>
 Level 5: Congratulations! Not many reach this level 💪. Level&rsquo;s objective: have a constructive, final conversation with senior leadership to explore the role and your future at HTB.
 </li>
 <li>
 Level 6: You've officially received an offer from HTB! To complete the last level and the Quest, all you need to do is accept the offer.
 </li>
 <li>
 Quest complete. Congratulations, you&rsquo;re officially one of us 🥳🎉🎇Your next quest: complete the onboarding.
 </li>
 </ul>
 
 
 Hack Your Career, Today. Join us in this epic adventure of cybersecurity at Hack The Box! 🚀🔒💻
 
 
 
 
 
 
 
 ABOUT HACK THE BOX
 
 
 
 Hack The Box is the leading cybersecurity readiness and upskilling platform, trusted by enterprises, government organizations, and MSSPs to build cyber resilience at scale. Through AI-enhanced intelligence, gamified labs, live-fire simulations, and the power of one of the world&rsquo;s largest cybersecurity communities, Hack The Box helps teams master offensive and defensive skills in real-world scenarios. Founded in 2017, Hack The Box has grown its global community of over 4 million members, helping organizations validate resilience, mitigate breach risk, and develop cyber talent. For more information, visit hackthebox.com
 
 
 Rapidly growing its international footprint and reach, Hack The Box is headquartered in the UK, with additional offices in the US, Australia, and Greece.
 
 
 
 🚨 News &amp; Resources:
 
 
 <ul>
 <li>
 Get the most important updates on HTB&rsquo;s latest year!
 </li>
 <li>
 We&rsquo;re incredibly proud to share that our headquarters in the UK, along with our entities in Greece and the US, have been certified as a Great Place to Work for three consecutive years (2023 - 2025).
 </li>
 <li>
 In addition, our Greek entity has been recognized among the Best Workplaces in Greece (4th, 2nd, 3rd) and Europe (7th, 10th, 73rd) during this period &mdash; a testament to our strong culture and commitment to creating an exceptional employee experience!
 </li>
 </ul>
 
 
 
 
 Take a sneak peek at how it is to be part of HTB and our 2023 Global Retreat. Get more insights about our HTB culture and employee experience by visiting the &ldquo;about us&rdquo; section of our site, our career site, and Glassdoor.
 
 
 
 
 
 
 At Hack The Box, we are committed to fostering a diverse, inclusive, and equitable workplace. We believe that diversity enriches our performance, services, and the communities we serve. As such, we ensure that all job applications are considered solely based on merit, skills, and qualifications. We do not discriminate on grounds of race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. We are dedicated to providing a fair and respectful work environment that reflects our values.
 
 
</div>

<div>
 
 Ready to embark on the quest of joining Hack The Box?
 
 
 
 At the end of this thrilling journey, you'll become a proud member of Hack The Box, with the ultimate mission to help redefine cybersecurity expertise. Get ready for an exciting adventure into the world of cybersecurity! 🚀🔒💻
 
 
 
 
 ✨The core mission of the Senior Django Engineer:
 
 
 
 
 We are on the lookout for our next backend engineer in LetsDefend team. Let's Defend is a cutting-edge cybersecurity training company dedicated to empowering blue-team professionals by simulating a real Security Operations Center (SOC). It has a community of over 320,000 members across 150+ countries fosters peer learning and collaboration.
 
 
 Hack The Box and LetsDefend join forces to create the world's largest collaborative cybersecurity platform with hands-on labs, SOC simulations, and a unified upskilling experience.
 
 
 This role will focus on enhancing backend performance and scalability, strengthening code quality and reliability, and leading architectural direction across teams. The software engineer will play a key role in improving system efficiency, reducing issues, and fostering alignment with frontend, mobile, and DevOps counterparts. Additionally, they will own and deliver impactful backend features that support major product goals and contribute to the platform's long-term growth.
 
 
 
 🏢 Location &amp; Work Mode:
 
 
 
 <ul>
 <li>
 Options: Turkiye or Greece
 </li>
 <li>
 Fully Remote - If only in Greece: When hiring in Greece, we're open to candidates from all locations. Those based within 55 km of our Athens office will follow a hybrid work model. For candidates located beyond that radius, a fully remote arrangement is available
 
 
 </li>
 </ul>
 
 🍺
 
 The fellowship you'll be joining:
 
 
 
 
 The new joiner will be part of a lean software engineering team composed of three members: one Senior Backend Developer, one Mid-Level Frontend Developer, and one Mobile Developer. In this role, they will collaborate closely not only with their immediate teammates, but also with key stakeholders across the organization, including the Content Engineering team, Sales team, Infrastructure, and the broader Engineering team, all of whom play a critical role in supporting the product and its customers. This position will report directly to the Sr. Director of Engineering.
 
 
 
 
 ⚔️ Technology tools &amp; weapons you'll be using:
 
 
 
 
 <ul>
 <li>
 Django Framework (Python language)
 </li>
 <li>
 Docker
 </li>
 <li>
 Apache Kafka
 </li>
 <li>
 Redis
 </li>
 <li>
 Git
 
 
 </li>
 </ul>
 
 
 📚 Interesting resources you should check:
 
 
 
 
 <ul>
 <li>
 Take a look at LetsDefend Website
 </li>
 <li>
 Hack The Box + LetsDefend: Shaping the future of community-led cyber readiness
 
 
 </li>
 </ul>
 
 🚀
 
 The adventures that await you after becoming Senior Django Engineer:
 
 
 
 
 <ul>
 <li>
 Optimize backend performance by improving API responsiveness, refining database queries, and enhancing caching strategies
 </li>
 <li>
 Design scalable backend architectures and influence long-term technical direction across multiple products and services
 </li>
 <li>
 Implement high-quality, maintainable code with strong test coverage and adherence to best practices
 </li>
 <li>
 Refactor legacy components into clean, modular, and future-ready services that accelerate development
 </li>
 <li>
 Collaborate closely with frontend, mobile, DevOps, and product teams to ensure smooth execution of cross-functional projects
 </li>
 <li>
 Lead technical discussions, produce clear design documents, and guide the team on architectural patterns
 </li>
 <li>
 Troubleshoot production issues rapidly and improve system reliability through monitoring, logging, and error reduction
 </li>
 <li>
 Deliver high-impact backend features that directly support product growth, user engagement, and business goals
 
 
 </li>
 </ul>
 
 
 🏆 Skills, knowledge, and experience points required to unlock the role of Senior Django Engineer:
 
 
 
 
 <ul>
 <li>
 Expert-level proficiency in Django &amp; Django REST Framework, including ORM optimization, class-based views, and advanced API design
 </li>
 <li>
 Hands-on experience with asynchronous task processing, ideally Celery + Redis/RabbitMQ, and deep understanding of reliability patterns
 </li>
 <li>
 Ability to design scalable backend architectures, including caching layers, service boundaries, and performance bottleneck prevention
 </li>
 <li>
 Solid understanding of backend security practices, including authentication, authorization, rate-limiting, and secure data handling
 </li>
 <li>
 Proven track record of owning and delivering complex backend features, including writing technical designs and mentoring other engineers
 </li>
 <li>
 Good knowledge of English language (verbal and written)
 
 
 </li>
 </ul>
 Bonus points:
 
 
 <ul>
 <li>
 Experience with AWS or other cloud platforms
 </li>
 <li>
 Knowledge of Docker or containerization
 </li>
 <li>
 Exposure to event streaming technologies such as Apache Kafka
 
 
 </li>
 </ul>
 
 🕹️ What your adventure will have in store:
 
 
 
 <ul>
 <li>
 🎯You'll have the exhilarating opportunity to contribute to a product that is highly appreciated by users and the cybersecurity community at large
 </li>
 <li>
 🎯 You'll experience a highly supportive and caring environment, fostering growth, flexibility, and autonomy
 </li>
 <li>
 🎯 You'll embark on an exciting journey of continuous learning and problem-solving, leveling up as our organization grows
 </li>
 <li>
 🎯 Most importantly, you'll have a blast at HTB 🥳 because fun is an essential ingredient in our recipe for success! Just wait until you see our global meet-ups!
 
 
 </li>
 </ul>
 
 💰The gems you'll be enjoying as a Senior Django Engineer:
 
 
 
 <ul>
 <li>
 25 annual leave days
 </li>
 <li>
 Paid paternity leave
 </li>
 <li>
 Dedicated budget for training and professional development, participation in conferences
 </li>
 <li>
 Full access to the Hack The Box lab offerings; so you can learn how to hack 😉
 </li>
 <li>
 State-of-the-art equipment (mac, iPhone, and mobile plan)
 
 
 </li>
 </ul>
 Our benefits package is designed to provide strong support to our team, but it may vary depending on location and type of employment (e.g., UK, Greece, or engagement through an Employer
 
 
 
 
 🗺️ The Quest of Becoming
 
 Senior Django Engineer:
 
 
 
 <ul>
 <li>
 Level 1: To complete level one's objective, submit your application.
 </li>
 <li>
 Level 2: Meet the Talent Acquisition team. Level's objective: highlight your past achievements, ambitions, and values
 </li>
 <li>
 Level 3: Meet the hiring team. Level's objective: connect with the hiring team and share with them your achievements.
 </li>
 <li>
 Level 4: Meet the hiring team, once again, to explore your leadership mindset and values alignment with HTB
 </li>
 <li>
 Level 5: Congratulations! Not many reach this level 💪. Level's objective: have a constructive, final conversation with senior leadership to explore the role and your future at HTB.
 </li>
 <li>
 Level 6: You've officially received an offer from HTB! To complete the last level and the Quest, all you need to do is accept the offer.
 </li>
 <li>
 Quest complete. Congratulations, you're officially one of us 🥳🎉🎇Your next quest: complete the onboarding
 
 
 
 </li>
 </ul>
 
 Hack Your Career, Today. Join us in this epic adventure of cybersecurity at Hack The Box! 🚀🔒💻
 
 
 
 
 
 About Hack The Box
 
 
 
 Hack The Box is the leading cybersecurity readiness and upskilling platform, trusted by enterprises, government organizations, and MSSPs to build cyber resilience at scale. Through AI-enhanced intelligence, gamified labs, live-fire simulations, and the power of one of the world's largest cybersecurity communities, Hack The Box helps teams master offensive and defensive skills in real-world scenarios. Founded in 2017, Hack The Box has grown its global community of over 4 million members, helping organizations validate resilience, mitigate breach risk, and develop cyber talent. For more information, visit hackthebox.com
 
 
 Rapidly growing its international footprint and reach, Hack The Box is headquartered in the UK, with additional offices in the US, Australia, and Greece.
 
 
 
 🚨 News &amp; Resources:
 
 
 
 <ul>
 <li>
 Get the most important updates on HTB's latest year!
 </li>
 <li>
 We're incredibly proud to share that our headquarters in the UK, along with our entities in Greece and the US, have been certified as a Great Place to Work for three consecutive years (2023 - 2025).
 </li>
 <li>
 In addition, our Greek entity has been recognized among the Best Workplaces in Greece (4th, 2nd, 3rd) and Europe (7th, 10th, 73rd) during this period &mdash; a testament to our strong culture and commitment to creating an exceptional employee experience!
 
 
 </li>
 </ul>
 Take a sneak peek at how it is to be part of HTB and our 2023 Global Retreat. Get more insights about our HTB culture and employee experience by visiting the "about us" section of our site, our career site, and Glassdoor.
 
 
 
 At Hack The Box, we are committed to fostering a diverse, inclusive, and equitable workplace. We believe that diversity enriches our performance, services, and the communities we serve. As such, we ensure that all job applications are considered solely based on merit, skills, and qualifications. We do not discriminate on grounds of race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. We are dedicated to providing a fair and respectful work environment that reflects our values.
 
</div>

Keyrock

<div>About Keyrock
Since our beginnings in 2017, we've grown to be a leading change-maker in the digital asset space, renowned for our partnerships and innovation.
Today, we rock with over 200 team members around the world. Our diverse team hails from 42 nationalities, with backgrounds ranging from DeFi natives to PhDs. Predominantly remote, we have hubs in London, Brussels, Singapore and Paris, and host regular online and offline hangouts to keep the crew tight.
We are trading on more than 80 exchanges, and working with a wide array of asset issuers. As a well-established market maker, our distinctive expertise led us to expand rapidly. Today, our services span market making, options trading, high-frequency trading, OTC, and DeFi trading desks as well as digital asset management. Keyrock is looking to expand and establish itself as a full-service financial institution through both organic innovation and inorganic growth.
But we&rsquo;re more than a service provider. We&rsquo;re an initiator. We're pioneers in adopting the Rust Development language for our algorithmic trading systems, and champions of its use in the industry. We support the growth of Web3 startups through our Accelerator Program. We upgrade ecosystems by injecting liquidity into promising DeFi, RWA, and NFT protocols. And we push the industry's progress with our research and governance initiatives.
At Keyrock, we're not just envisioning the future of digital assets. We're actively building it.
Mission statement 
We are seeking a Full Stack Web Engineer with a strong sense of UI/UX design and a proven track record in the financial services industry. Experience in the crypto or digital asset domain is highly valued. 
You will work across the entire technology stack - from data models and APIs to interactive, high-performance interfaces - building and refining products that deliver tangible business value. You are driven by a product mindset, validating ideas early and evolving them from functional to exceptional. You are language-agnostic, pragmatic in your technical choices, and unafraid to experiment when it serves the end user. 
You excel in collaborative environments, take ownership of your work, and contribute to a culture of technical excellence through reviews, mentorship, and shared learning. If you combine creativity in front-end craft with a deep appreciation for backend reliability and data integrity, this role is designed for you.
Job description<ul><li>
Deliver end-to-end product features - from backend APIs and data models to engaging, responsive UI components.</li><li>
Review and validate scalable software architectures, ensuring maintainability, reliability, and secure integrations across all layers.</li><li>
Champion good engineering practices, including code reviews, automated testing, documentation, and CI/CD workflows.</li><li>
Optimise performance across the stack through effective debugging, profiling, and system tuning.</li><li>
Collaborate with product, and engineering teams to translate complex business and user requirements into elegant, performant solutions.</li><li>
Maintain consistent operational hygiene through clear documentation, smooth migrations, and predictable deployments.</li><li>
Explore and share emerging technologies, with particular interest in Rust, WebAssembly, and modern API frameworks.</li></ul>
Background and experience<ul><li> 
Proven experience building full stack web applications with strong command of both frontend and backend principles.</li><li>
Proficiency in modern frontend frameworks (Vue, React or similar) and design systems or component libraries such as Shadcn.</li><li>
Experience developing robust backend services, ideally using Rust, or familiarity with typed backend languages</li><li>
Solid understanding of HTTP, RESTful API design, and performance optimisation in web contexts</li><li>
Hands-on experience with relational and/or NoSQL databases, schema design, and query optimisation.</li><li>
Familiarity with Git-based workflows, continuous integration, and automated testing practices.</li><li>
Strong debugging, problem-solving, and analytical skills.</li><li>
A product-oriented mindset - balancing quality, speed, and user impact effectively.</li><li>
Excellent collaboration and communication skills, with a proactive attitude toward improving systems and team dynamics.</li><li>
Product oriented mindset with the ability to focus on delivering value, validate early, and progressively refine solutions.</li></ul><h1 class="jobSectionHeader">
Preferred Qualifications</h1><ul><li>
Exposure to data-intensive, governance-driven, or fintech/crypto applications, and curiosity for Rust or distributed systems.</li><li>
Awareness of secure coding practices, authentication/authorisation models (OAuth2, OpenID Connect).</li><li>
Knowledge of data visualisation libraries (D3.js, Recharts, or similar).</li><li>
Familiarity with observability stacks (Grafana, Prometheus, Loki, Faro, or Datadog) and comfort instrumenting metrics, logs, and traces.</li><li>
Ability to design applications with self-observability in mind (e.g., health endpoints, tracing IDs, telemetry propagation).</li><li>
Exposure to Kubernetes, containerised environments, and Helm-based deployments.</li><li>
Understanding of CI/CD pipelines (GitLab CI) and infrastructure-as-code workflows.</li><li>
Experience working in cloud-native environments (AWS, GCP, or Azure) and awareness of security-first design.</li><li>
Comfort working with financial datasets, trade logs, or analytics dashboards.</li><li>
Experience handling sensitive or regulated data, ideally in financial or crypto contexts.</li></ul>
Our recruitment philosophy
We value self-awareness and powerful communication skills in our recruitment process. We seek fiercely passionate people who understand themselves and their career goals. We're after those with the right skills and a conscious choice to join our field. The perfect fit? A crypto enthusiast who&rsquo;s driven, collaborative, acts with ownership and delivers solid, scalable outcomes.
Our offer<ul><li>
A competitive salary package</li><li>
Autonomy in your time management thanks to flexible working hours and the opportunity to work remotely</li><li>
The freedom to create your own entrepreneurial experience by being part of a team of people in search of excellence</li></ul>
As an employer we are committed to building a positive and collaborative work environment. We welcome employees of all backgrounds, and hire, reward and promote entirely based on merit and performance.
Due to the nature of our business and external requirements, we perform background checks on all potential employees, passing which is a prerequisite to join Keyrock.
https://keyrock.com/careers/</div>

Senior Full Stack Web Engineer - Trading

Acronis

<div>
 Acronis is revolutionizing cyber protection&mdash;providing natively integrated, all-in-one solutions that monitor, control, and protect the data that businesses and lives depend on. We are looking for a Senior Frontend Developer to join our mission to create a #CyberFit future and protect all data, applications and systems across any environment.
 
 
 
 WHAT YOU`LL DO
 
 
 
 <ul>
 <li>
 You will work within a stable research and development team to improve existing and build brand new Acronis products.
 </li>
 <li>
 You will play an important role in development of innovative data protection and security solutions, focusing on UI part of the product.
 </li>
 <li>
 You will create clean, simple and easy to use interfaces that users love.
 </li>
 <li>
 You will also work a lot with AI tools, conduct lot of research and solve a wide variety of problems that have been never solved before. Ideally, you are a detail-oriented, self-motivated and enjoy dealing with challenging problems.
 
 
 </li>
 </ul>
 
 Who We&rsquo;re Looking For
 
 
 
 <ul>
 <li>
 3+ years work experience in the field of frontend development
 </li>
 <li>
 Strong JavaScript programming and relevant instrumentation skills
 </li>
 <li>
 Intimate knowledge of modern frameworks like VueJS, ReactJS, Angular, ElectronJS
 </li>
 <li>
 Intimate knowledge of TypeScript, ECMAScript Standards, Babel, Webpack, HTML5/CSS3, Scss/Sass/Less
 </li>
 <li>
 Good knowledge of Functional Programing, Object-Oriented Programming and design patterns (Factory, Strategy, MVC, MVVM, Singleton and etc.)
 </li>
 <li>
 Ability to take responsibility for feature development / project
 </li>
 <li>
 Ability to use but not fully rely on AI tools
 </li>
 <li>
 Experience in one or more of the following areas will be a plus: Jest, Test-Driven Development, BEM Methodology, Linux/BSD, Node.js, Backend Development
 </li>
 <li>
 Experience in Scrum/Kanban, Git, JIRA
 </li>
 <li>
 Willingness to learn and grow professionally in a team environment
 
 
 </li>
 </ul>
 
 WOULD BE A PLUS
 
 
 
 <ul>
 <li>
 Experience in one or more of the following areas will be a plus: Jest, Test-Driven Development, BEM Methodology, Linux/BSD, Node.js, Backend Development
 </li>
 <li>
 Experience in Scrum/Kanban, Git, JIRA
 </li>
 <li>
 Willingness to learn and grow professionally in a team environment
 </li>
 <li>
 Please submit your resume and application in English
 
 
 </li>
 </ul>
 
 Who We Are
 
 
 
 A Swiss company founded in Singapore in 2003, Acronis offers over twenty years of innovation with 15 offices worldwide and more than 1800 employees in 50+ countries. Acronis Cyber Protect is available in 26 languages in 150 countries and is used by over 20,000 service providers to protect over 750,000 businesses.
 
 
 Our corporate culture is focused on making a positive impact on the lives of each employee and the communities we serve. Mutual trust, respect and belief that we can contribute to the world everyday are the cornerstones of our team. Each member of our &ldquo;A-Team&rdquo; plays an instrumental role in driving the success of our innovative and expanding business. We seek individuals who excel in dynamic, global environments and have a never give up attitude, contributing to our collective growth and impact.
 
 
 
 OUR INTERVIEW PRACTICES
 
 
 
 To maintain a fair and genuine hiring process, we kindly ask that all candidates participate in interviews without the assistance of AI tools or external prompts. Our interview process is designed to assess your individual skills, experiences, and communication style. We value authenticity and want to ensure we&rsquo;re getting to know you&mdash;not a digital assistant. To help maintain this integrity, we ask to remove virtual backgrounds and include in-person interviews in our hiring process.
 
 
 Use of AI-generated responses or third-party support during live interviews may be grounds for disqualification from the recruitment process and a full criminal, education and identification background check is required for all new hires.
 
 
 
 Acronis is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to age, ancestry, color, marital status, national origin, physical or mental disability, medical condition, protected veteran status, race, religion, sex (including pregnancy), sexual orientation, gender identity or expression, or any other characteristic protected by applicable laws, regulations and ordinances.
 
</div>

Senior Frontend Developer (Cybersecurity)

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