front end engineer

RedCloud Technologies

<div><p><b>About RedCloud</b></p><p>
The global supply chain is broken&mdash;creating a $2 trillion inventory gap where essential consumer goods fail to reach the people who need them. Brands miss sales, distributors mismanage stock, and retailers face empty shelves. The result? Higher prices, slower growth, and lost opportunity across the board.</p><p>
RedCloud is fixing this. Our RedAI digital trading platform, bulk and retail trading exchanges connect key parts of the supply chain&mdash;enabling bulk inventory exchange, streamlined digital payments, and generating vast quantities of aggregated market data. By applying AI and machine learning techniques, we deliver predictive market insight and trading recommendations straight back to the trading environment&mdash;facilitating smarter everyday business decisions for our customers, from factory to warehouse to store.</p><p>
Headquartered in London, RedCloud became a publicly listed company on Nasdaq (RCT) in March 2025. With a diverse team spanning many nationalities and operations across Africa, the Middle East, Europe, and Latin America. We&rsquo;re building a more connected and efficient global trade network. Our AI labs are busy exploring the next generation of smart AI agents and deeper FMCG market intelligence for the benefit of our customers across a growing operational footprint.</p><p></p><p><b>
The role:</b></p><p></p><p>
We are seeking a skilled Front End Engineer, the ideal candidate will be responsible for designing, developing, and maintaining our Red101 platform and related services. Additionally, the candidate should have a strong understanding of testing methodologies and be able to conduct their own testing to ensure the quality and functionality of our applications and a strong understanding that our customers are the ultimate beneficiary of well built, scalable and working software.</p><p><b>
Key Responsibilities:</b></p><ul><li><p>
Design, develop, and maintain software systems using modern frameworks and technologies.</p></li><li><p>
Collaborate with cross-functional teams to define, design, and ship new features.</p></li><li><p>
Write clean, maintainable, and efficient code.</p></li><li><p>
Implement responsive design principles to ensure applications work on various devices and screen sizes.</p></li><li><p>
Conduct thorough testing of applications, including unit testing, integration testing, and end-to-end testing.</p></li><li><p>
Debug and resolve technical issues and bugs.</p></li><li><p>
Be part of a support rota for production issues or outages.</p></li><li><p>
Tame technical debt which arises from the normal delivery process.</p></li><li><p>
Stay updated with emerging technologies and industry trends.</p></li></ul><p></p><p><b>
Required Skills and Qualifications:</b></p><ul><li><p>
Bachelor&rsquo;s degree in Computer Science, Software Engineering, or a related field, <b>or equivalent professional experience</b> delivering production-grade frontend systems at scale.</p></li><li><p><b>
Expert-level proficiency in modern frontend development</b>, including:</p><ul><li><p>
HTML5, CSS3 (including modern layout systems and design tokens)</p></li><li><p>
JavaScript and TypeScript</p></li><li><p>
Deep experience with <b>React</b> and the contemporary ecosystem (hooks, server components, state management, performance optimization)</p></li></ul></li><li><p>
Strong experience building <b>large-scale, complex web applications</b>, with a solid understanding of:</p><ul><li><p>
Component-driven architecture</p></li><li><p>
Accessible, responsive, and internationalized user interfaces</p></li><li><p>
Performance, bundle optimization, and browser rendering behaviour</p></li></ul></li><li><p>
Proven experience with <b>version control and modern Git workflows</b>, including trunk-based development or GitOps-style branching strategies, code reviews, and automated quality gates.</p></li><li><p>
Strong background in <b>testing strategy and implementation</b>, including:</p><ul><li><p>
Unit, integration, and end-to-end testing</p></li><li><p>
Frameworks such as Jest, Vitest, Playwright, Cypress, Selenium, or equivalent</p></li><li><p>
Advocating for testability and quality-first development practices</p></li></ul></li><li><p>
Ability to <b>design, document, and communicate frontend architecture</b>, using:</p><ul><li><p>
System and component diagrams (e.g., C4 model)</p></li><li><p>
Sequence diagrams, workflows, and technical design documents</p></li><li><p>
Clear written communication that supports cross-team collaboration</p></li></ul></li><li><p>
Solid understanding of <b>frontend observability and operational excellence</b>, including:</p><ul><li><p>
Client-side logging, monitoring, and alerting</p></li><li><p>
Performance tracking (Core Web Vitals, real-user monitoring)</p></li><li><p>
Debugging issues across browsers, devices, and environments</p></li></ul></li><li><p>
Experience collaborating closely with <b>backend, design, product, and platform teams</b> to deliver cohesive user experiences, influencing technical direction and trade-offs.</p></li><li><p>
Excellent problem-solving skills, attention to detail, and the ability to <b>lead by example</b>, mentor other engineers, and take ownership of frontend quality and technical decisions.</p></li><li><p>
Strong communication skills, with the ability to articulate complex technical concepts to both technical and non-technical stakeholders.</p></li></ul><p></p><p>
Check out the links below to see what our CEO Justin Floyd has to say about our plans for growth for the year ahead, and to see our latest video on the mission we&rsquo;re on!</p><p>
https://youtu.be/8BmLoJ9U9vA</p><p>
https://youtu.be/59PD4UoTgIE</p></div>

Front End Engineer

Commencis

<div><div>We are looking for a highly motivated and experienced <b>Senior Software Engineer (.Net)</b> to join our team.</div>
<div></div>
<div><b>Senior Software Engineer (.NET</b>) is responsible for designing, developing, and maintaining scalable, high-performance backend systems that power our products and services. In this role, you will translate business and product requirements into robust technical solutions, ensuring reliability, security, and performance across backend services.
</div>
<div></div><div>You will work closely with cross-functional teams, including frontend developers, DevOps engineers, product managers, and solution architects, to design and implement efficient, scalable, and maintainable backend architectures using modern .NET technologies. You will also contribute to architectural discussions, apply best practices, and support the overall quality and sustainability of the codebase. If you are curious by nature, adaptive, collaborative, and always one step ahead, then join us and be a Commencer!</div>
<div></div>
<div><b>If you are curious by nature, adaptive, collaborative, and always one step ahead, then join us and be a Commencer!</b></div>
<h3 class="jobSectionHeader"><b>Key Responsibilities</b></h3><ul>
<li>Design, develop, and maintain scalable and high-performance backend systems using .NET technologies</li>
<li>Contribute to system architecture decisions and lead the design of microservices-based solutions</li>
<li>Build and maintain RESTful APIs and ensure high availability and performance</li>
<li>Collaborate with cross-functional teams including product, design, and QA to deliver high-quality solutions</li>
<li>Ensure code quality through code reviews, best practices, and clean code principles</li>
<li>Write and maintain unit and integration tests</li>
<li>Troubleshoot, debug, and optimize existing systems</li>
<li>Participate in CI/CD processes and support deployment activities</li>
<li>Mentor junior developers and contribute to team knowledge sharing</li>
<li>Stay up to date with emerging technologies and industry best practices</li>
</ul><h3 class="jobSectionHeader"><b>Qualifications &amp; Experience</b></h3><ul>
<li>BSc/MSc/PhD degree in Computer Science or a related field, or equivalent practical experience</li>
<li>At least 5 years of professional experience in backend development with .NET (C#, .NET Core / .NET 8+)</li>
<li>Strong understanding of OOP principles, design patterns, and scalable system design</li>
<li>Experience with microservices architecture and distributed systems</li>
<li>Hands-on experience with relational and non-relational databases (e.g., SQL Server, PostgreSQL, MongoDB, Redis)</li>
<li>Familiarity with message brokers (e.g., Kafka, RabbitMQ) is a plus</li>
<li>Basic knowledge of front-end technologies such as JavaScript, HTML5, CSS3 and TypeScript</li>
<li>Strong experience in unit testing and debugging</li>
<li>Proficiency with Git or similar version control systems</li>
<li>Familiarity with CI/CD pipelines and DevOps practices is a plus</li>
<li>Hands-on experience using AI tools throughout the development process</li>
<li>Strong analytical thinking and problem-solving skills</li>
<li>Excellent attention to detail</li>
<li>Effective time management and multitasking skills</li>
<li>Strong verbal and written communication skills</li>
<li>Fluent in English</li>
</ul><div><b>Why Commencis?</b></div><div><b>
</b></div><div>
We want people to thrive at Commencis. Here&rsquo;s what Commencers like about working here:</div><div><b>
</b></div><div><b>
Competitive Compensation &amp; Benefits:</b> We offer a competitive salary, private health insurance, pension and retirement plans through a company-backed pension system, meal card, commute compensation, work-from home support and paid birthday off.</div><div></div><div><b><br>
Happier Weekdays:</b> We offer flexible working hours including remote working option. Online events, guest speakers, refreshments in the office, meeting-light culture, and many more to enjoy the weekdays.</div><div></div><div><b><br>
Never Stop Learning:</b> We support learning and development programs for almost anything. Additionally, we provide access to leading online e-learning platforms like Udemy and various libraries.</div><div></div><div><b><br>
Community &amp; Socials:</b> We are a tight-knit community that loves gathering. Our social activities include happy hours, workshops, new year party, breakfast &amp; lunch get-togethers, movie nights, and our Summer Festival.</div><div></div><div><b><br>
Open Culture:</b> We maintain a flat organizational structure with a culture of direct and open communication. We value Commencers&rsquo; voices and address any suggestions and questions you may have.</div><div></div><div><b><br>
About Commencis</b></div><div></div><div><br>
Join us in paving the way for a thriving digital society!</div><div></div><div><br>
Commencis has more than two decades of expertise in the world of experience design, software engineering and cloud technologies. Our products and solutions are used by leading brands in financial services, insurance, airlines and retail in more than 20 countries.</div><div></div><div><br>
We help our clients around the globe to commence their next evolution and pave the way for a thriving digital society. We love discovering what&rsquo;s next. We value collaboration, curiosity, and an open mindset at work.</div><div></div><div><br>
If you share the same passion with our fellow Commencers, then let us unleash your world-class potential!</div><div></div><div><b><br>
We will process your personal data as part of our recruitment procedures. To find out more, please consult our </b><b>Candidate Privacy Notices</b><b>.</b></div><div></div><p><br>
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.</p></div>

Senior Software Engineer (.Net)

<div><div>We are looking for a highly motivated and experienced <b>Senior Software Engineer (Java)</b> to join our team.
</div>
<div></div><div><b>Senior Software Engineer (Java)</b> is responsible for designing, developing, and maintaining scalable, high-performance backend systems that power our products and services. In this role, you will translate business and product requirements into robust technical solutions, ensuring reliability, security, and performance across backend services.
</div>
<div></div><div>You will work closely with cross-functional teams, including frontend developers, DevOps engineers, product managers, lead engineers, and solution architects, to design and implement efficient, scalable, and maintainable backend architectures using modern Java technologies. You will also contribute to architectural discussions, apply best practices, and support the overall quality and sustainability of the codebase.
</div>
<div></div><div><b>If you are curious by nature, adaptive, collaborative, and always one step ahead, then join us and be a Commencer!</b></div><br>
<div></div>
<div></div>
<h3 class="jobSectionHeader"><b>Responsibilities
</b></h3><div><div><ul><li>Design, develop, and maintain scalable and high-performance backend systems using Java and Spring Framework (Spring Boot, Spring MVC, Spring Data, Spring Security, etc.)</li>
<li>Contribute to system architecture decisions and lead the design of both monolithic and microservices-based solutions</li>
<li>Develop and maintain Backend-for-Frontend (BFF) layers and core backend services to support scalable applications</li>
<li>Strong understanding of design principles, design patterns, and architectural best practices (DDD, TDD, and layered architecture)</li>
<li>Build and maintain RESTful APIs and ensure high availability and performance</li>
<li>Collaborate with cross-functional teams including product, design, and QA to deliver high-quality solutions</li>
<li>Ensure code quality through code reviews, best practices, and clean code principles</li>
<li>Write and maintain unit and integration tests</li>
<li>Troubleshoot, debug, and optimize existing systems</li>
<li>Participate in CI/CD processes and support deployment activities</li>
<li>Mentor junior developers and contribute to team knowledge sharing</li>
<li>Stay up to date with emerging technologies and industry best practices</li>
<li>Experience with AI technologies and a strong interest in learning and applying them in real-world use cases</li>
<li>This role requires flexibility in working days to align with client schedules, as some clients operate between Sunday and Thursday.</li></ul></div><br>
</div>
<p></p><h3 class="jobSectionHeader"><b>Qualifications
</b></h3><ul><li>BSc/MSc/PhD degree in Computer Science or a related field, or equivalent practical experience</li>
<li>At least 5 years of professional experience in backend development with Java Strong experience with Spring Framework (Spring Boot, Spring MVC, Spring Data, Spring Security, etc.)</li>
<li>Strong understanding of OOP principles, design patterns, and scalable system design</li>
<li>Experience with microservices architecture and distributed systems</li>
<li>Hands-on experience with relational and non-relational databases (e.g., PostgreSQL, MySQL, MongoDB, Redis)</li>
<li>Familiarity with message brokers (e.g., Kafka, RabbitMQ) is a plus</li>
<li>Basic knowledge of front-end technologies such as JavaScript, HTML5 and CSS3</li>
<li>Strong unit test and debugging skills</li>
<li>Proficiency in code versioning tools such as Git</li>
<li>Familiarity with CI/CD pipelines and DevOps practices is a plus</li>
<li>Strong sense of analytical thinking and problem-solving skills</li>
<li>Excellent attention to detail</li>
<li>Highly effective time management and multitasking skills</li>
<li>Strong verbal and written communication skills both in English and Turkish</li>
</ul>
<div></div><div><b>Why Commencis?</b></div>
<div></div>
<div>We want people to thrive at Commencis. Here&rsquo;s what Commencers like about working here:</div>
<div></div>
<div><b>Competitive Compensation &amp; Benefits:</b> We offer a competitive salary, private health insurance, pension and retirement plans through a company-backed pension system, meal card, commute compensation, work-from-home support, and a paid birthday off.</div>
<div></div>
<div><b>Happier Weekdays:</b> We offer flexible working hours, including a remote working option. Enjoy online events, guest speakers, office refreshments, a meeting-light culture, and many more perks to enhance your weekdays.</div>
<div></div>
<div><b>Never Stop Learning:</b> We support learning and development programs for almost anything. Additionally, we provide access to leading online e-learning platforms like Udemy and various libraries.</div>
<div></div>
<div><b>Community &amp; Socials:</b> We are a tight-knit community that loves gathering together. Our social activities include happy hours, workshops, a New Year party, breakfast &amp; lunch get-togethers, movie nights, and our Summer Festival.</div>
<div></div>
<div><b>Open Culture:</b> We maintain a flat organizational structure with a culture of direct and open communication. We value Commencers&rsquo; voices and address any suggestions and questions you may have.</div><br>
<div></div>
<div></div>
<div><b>About Commencis</b></div>
<div></div>
<div>Join us in paving the way for a thriving digital society!</div>
<div></div>
<div>Commencis has more than two decades of expertise in the world of experience design, software engineering and cloud technologies. Our products and solutions are used by leading brands in financial services, insurance, airlines and retail in more than 20 countries.</div>
<div></div>
<div>We help our clients around the globe to commence their next evolution and pave the way for a thriving digital society. We love discovering what&rsquo;s next. We value collaboration, curiosity, and an open mindset at work.</div>
<div></div>
<div>If you share the same passion with our fellow Commencers, then let us unleash your world-class potential!</div>
<div></div>
<div><b>We will process your personal data as part of our recruitment procedures. To find out more, please consult our </b><b>Candidate Privacy Notices</b><b>.</b></div>
<p>
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.</p></div>

Senior Software Engineer (Java)

<div><p><b>About RedCloud</b></p><p>
The global supply chain is broken&mdash;creating a $2 trillion inventory gap where essential consumer goods fail to reach the people who need them. Brands miss sales, distributors mismanage stock, and retailers face empty shelves. The result? Higher prices, slower growth, and lost opportunity across the board.</p><p>
RedCloud is fixing this. Our RedAI digital trading platform, bulk and retail trading exchanges connect key parts of the supply chain&mdash;enabling bulk inventory exchange, streamlined digital payments, and generating vast quantities of aggregated market data. By applying AI and machine learning techniques, we deliver predictive market insight and trading recommendations straight back to the trading environment&mdash;facilitating smarter everyday business decisions for our customers, from factory to warehouse to store.</p><p>
Headquartered in London, RedCloud became a publicly listed company on Nasdaq (RCT) in March 2025. With a diverse team spanning many nationalities and operations across Africa, the Middle East, Europe, and Latin America. We&rsquo;re building a more connected and efficient global trade network. Our AI labs are busy exploring the next generation of smart AI agents and deeper FMCG market intelligence for the benefit of our customers across a growing operational footprint.</p><p></p><p><b>
The role:</b></p><p></p><p>
A Senior Software Engineer solves challenges and adds value for our customers through their skills in technology. They investigate and resolve issues in our systems in a timely fashion. As a senior engineer within the team they are expected to give guidance, mentoring and where necessary training to juniors and/or new members of the team acting as the voice of experience, whilst still being open to learning from others. The Senior Engineer exemplifies our company values and is a consistent high performer delivering value on the most complex areas on a daily basis. They understand the architecture of the systems and are able to work with Engineering Managers and Product Managers to define and document architecture for new areas of the system, aligning to RedCloud&rsquo;s architecture strategies. They are expected to keep their technical knowledge up to date in the RedCloud Sphere of platforms, tools and languages.</p><p></p><p><b>
What you&rsquo;ll be doing:</b></p><p></p><ul><li><p>
Deliver Features and bug fixes in our software platforms for our customers.</p></li><li><p>
Investigate and resolve bugs in our systems.</p></li><li><p>
Respond to production outages and issues in our systems..</p></li><li><p>
Estimate features and bugs within estimation sessions alongside the team.</p></li><li><p>
Design end to end feature areas that fit into the overall RedCloud architecture patterns.</p></li><li><p>
Refine features delivered by product managers.</p></li><li><p>
Carry out code reviews / Pull-request reviews for other engineers, ensuring quality on code.</p></li><li><p>
As a senior member of the team train and learn latest technologies adopted by RedCloud suggesting future libraries and patterns we should be looking at as a business.</p></li><li><p>
Mentor all levels of engineers and new starters in the team, as their RedCloud buddy. Ensure they have all they need to succeed within your team.</p></li></ul><p></p><p><b>
What you&rsquo;ll need:</b></p><p></p><ul><li><p>
At least 6+ years of experience in software engineering, with strong proficiency in C#, .NET Core, AWS, Node.JS, Databases (SQL, NoSQL)</p></li><li><p>
Strong problem-solving skills and the ability to break down complex challenges into manageable, actionable tasks.</p></li><li><p>
Excellent communication skills, with a collaborative approach to working within diverse teams.</p></li><li><p>
A passion for continuous learning and personal development, with a willingness to explore new ideas and approaches.</p></li></ul><p></p><p>
Check out the links below to see what our CEO Justin Floyd has to say about our plans for growth for the year ahead, and to see our latest video on the mission we&rsquo;re on!</p><p>
https://youtu.be/8BmLoJ9U9vA</p><p>
https://youtu.be/59PD4UoTgIE</p></div>

Senior Software Engineer

Siemens

<div><p>We are the catalyst for the industrial world&rsquo;s digital transformation.</p><p>
For more than 35 years, ground breaking technologies and business models engineered and developed by Siemens Turkey R&amp;D department contributes to the global success of Siemens</p><p>
Our R&amp;D activities focused on the fields of electrification, automation and digitalization, provides end-to-end support to our global customers on their unique digital transformation journey.</p><p>
We aim to increase our strength on solution and product development with world class SW development experts, with the vision to be the digitalization partner for our global customers.</p><p>
We need game changers like you, to bring the next level of smart manufacturing and infrastructure from mere concept to reality, develop tomorrow&rsquo;s smart cities, and address the most critical digitalization challenges across a comprehensive range of industries.</p><p></p><p><b>
What are my responsibilities?</b></p><ul><li>Being responsible of the DevOps pipeline in an Azure DevOps based development environment</li><li>Handling of the integration processes (build, release, deployment, version control, branching and merging, etc.)</li><li>Monitoring and maintenance of the build servers and pipelines</li><li>Establishing a continuous integration/delivery (CI/CD) pipeline and maintaining its operation</li><li>Supporting configuration-related processes of projects during release cycles</li><li>Conforming to Siemens processes, quality standards and guidelines</li></ul><p></p><p><b>
What do I need to qualify for this job?</b></p><ul><li>3rd-year undergraduate student in Computer Engineering or related areas</li><li>Willing to follow software engineering/devops engineer/configuration engineer career path.</li><li>Very good command of English.</li><li>Minimum 2,5 days/week availability is expected (partly remote working).</li><li>Motivated to use/learn AI tools to enhance system, pipelines and operational workflows (such as GitHub Copilot)</li><li>Eager to learn Industrial Automation domain know-how and Siemens specific technologies.</li><li>Hands-on experience in programming/scripting languages; such as C#, Bash, PowerShell, Python</li><li>Familiarity with CI/CD processes and Microsoft Team Foundation Server / Azure DevOps</li></ul><p></p><p>
At Siemens we are always challenging ourselves to build a better future. We need the most innovative and diverse Digital Minds to develop tomorrow &lsquo;s reality.</p><p>
As Siemens we believe physical barriers are not related to potential. Only the potential matters to us. Therefore, we look forward to receiving applications from candidates with physical barriers and chronic illnesses. We support healthy relationships between candidates with barriers and their colleagues because we believe we can create differences together.</p><p>
Siemens is dedicated to quality, equality, and valuating diversity and we welcome applications that reflect the diversity of the communities within which we work.</p><p>
We are looking forward to receiving your online application. Please ensure you complete all areas of the application form to the best of your ability as we will use the data to review your suitability for the role.</p><p>
Please find more information from our web site:</p><p>
https://new.siemens.com/tr/tr.html</p><p></p><p><b><br>
#LI-HYBRID</b></p></div><p></p>

Part Time Working Student (DevOps/Configuration Engineer)

Medsien Inc.

<div><p>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.</p>
<p>
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.</p>
<p>
Medsien is a venture-backed healthcare SaaS company experiencing rapid growth and looking to expand our team. We are seeking organized, motivated, and passionate <b>Full-Stack Engineer</b><b> </b>to join our team of talented and inspiring developers in a fast-paced environment.</p>
<p>
As a <b>Full-Stack Engineer</b>, you'll work on new exciting projects with full autonomy. We're looking for a candidate who is passionate about building new applications from the ground up and who will join a growing team in developing the products that enable providers to provide high quality services to their patients.</p>
<p><b>
As a Full-Stack Engineer, you will:</b></p>
<ul>
<li>Implement and document new software apps and components,</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. 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 the Operations team to troubleshoot and fix defects in software,</li>
<li>Participate in building Scrum processes and agile culture within the company.</li>
</ul>
<p><b>Please apply if you have:</b></p>
<ul>
<li>4+ years of back-end development experience,</li>
<li>Having worked in a dynamic, agile environment with minimal supervision,</li>
<li>Extensive experience with Python/Django,</li>
<li>A creative and driven mindset with experience navigating through ambiguity and a desire to work in a fast-paced, results-driven environment,</li>
<li>A desire to learn and try new approaches/ ideas and stretch boundaries,</li>
<li>Extreme problem solving skills,</li>
<li>Outstanding communication skills,</li>
<li>Bachelor's Degree or higher in Computer Science, or a related field of study,</li>
<li>Perfect English skills; both written and oral,</li>
<li>Residence in Istanbul city center.</li>
</ul>
<p><b>For this position, we offer:</b></p>
<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>
<p>Please bear in mind that:</p>
<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>
<p><b>Our Process</b></p>
<p>
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.</p>
<p>
Employment at <b>Medsien</b> 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.</p>
<p><b>
Thank you for taking the time to apply for a position at Medsien!</b></p>
<p>
Please visit the below links for GDPR details:</p>
<p>
https://www.medsien.com/legal/employee-candidate-information-notice</p>
<p>
https://www.medsien.com/legal/employee-candidate-explicit-consent-statement</p></div><p></p>

Full-Stack Engineer (Back-End skewed)

Keyrock

<div><h1 class="jobSectionHeader"><b>Senior Data Engineer</b></h1><p></p><h1 class="jobSectionHeader"><b>
About Keyrock</b></h1><p>
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.</p><p>
Today, we partner with over 250 team members around the world. Our diverse team hails from 42 nationalities, with backgrounds ranging from self-taught DeFi natives to PhDs. Predominantly remote, we have hubs in London, Brussels, and Singapore, and host regular online and offline hangouts to keep the crew tight.</p><p>
We are trading on more than 80 trading venues, 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.</p><p>
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, 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.</p><p>
At Keyrock, we're not just envisioning the future of digital assets. We're actively building it.</p><p></p><h2 class="jobSectionHeader"><b>
About the team and why the role exists</b></h2><p>
The Central Data Team (CDT) is only a few months old, but data has been Keyrock's lifeblood since day one. We're now building the Keyrock Data Platform to give Keyrockers, and the AI agents working alongside them, the data and context they need to act fast and autonomously within agreed boundaries and aligned with our shared goals. Doing that means taking data from across the company and making sense of it in real time for all the functions that depend on it: trading desks, wealth and asset management, product, risk, finance, compliance, and research to name a few.</p><p>
You'd be one of the early hires in CDT and we expect you to contribute to most of the bigger decisions and build work. The standards we settle on and the way the team ends up working are still open.</p><p></p><h2 class="jobSectionHeader"><b>
What You&rsquo;ll Do</b></h2><ul><li><p>
Build streaming and batch pipelines that ingest, normalise, and distribute market, trading, and portfolio data, resilient to feed and exchange failures.</p></li><li><p>
Build the self-serve tooling (SDKs, patterns, templates, AI agents) so other teams publish, consume, and build on data products without waiting on us.</p></li><li><p>
Own data contracts and schema evolution. Keep schema changes from turning into multi-team coordination events.</p></li><li><p>
Design the lakehouse and time-series layer around consumer query patterns.</p></li><li><p>
Build and evolve the Data Governance and Data Quality Framework: stale-feed detection, schema validation, range checks, idempotent writes, lineage, ownership, self-healing.</p></li><li><p>
Build the derived analytics the business runs on: cross-exchange spreads, VWAP at depth, order book microstructure for the desks; portfolio views, exposure, performance for wealth and asset management.</p></li><li><p>
Make observability, cost, and performance first-class from day one.</p></li><li><p>
Treat infrastructure as code (Docker, Terraform, CI/CD) alongside our Central Infrastructure Team.</p></li><li><p>
Work in the open: write things down, partner closely with Architecture, Infrastructure, Platform, and the rest of the teams.</p></li></ul><p></p><h2 class="jobSectionHeader"><b>
What We&rsquo;re Looking For</b></h2><p>
Tools matter less to us than how you think about problems. That said, here's the shape of the person we have in mind.</p><p>
Engineering Craft</p><ul><li><p>
8+ years of building production data systems that other people rely on.</p></li><li><p>
Strong proficiency in Python and SQL: not just being able to write a query, but being able to reason about what the engine is doing with it.</p></li><li><p>
Code that's easy for someone else to read, test, and delete later.</p></li><li><p>
Strong understanding of data modelling for both streaming and analytical workloads.</p></li><li><p>
Efficiency, quality, idempotency, and observability are taken seriously by default.</p></li></ul><p>
Systems Design</p><ul><li><p>
You've designed and operated streaming systems on Kafka, Redpanda, MSK, or Kinesis, and you have opinions about partitioning, consumer groups, offsets, and schema registries.</p></li><li><p>
You've used a time-series store in production (ClickHouse ideally; TimescaleDB, QuestDB, or similar are fine too) and can talk about table design as a function of query patterns.</p></li><li><p>
You've worked with a lakehouse architecture and reason about table layout, partitioning, and compaction as design choices that shape query performance and storage cost.</p></li><li><p>
You build for self-healing and idempotency. Reprocessing is safe, retries don't double-write, and the system recovers without a human in the loop.</p></li></ul><p>
Operational Readiness</p><ul><li><p>
Docker, Terraform, and CI/CD are how you work, not a separate &quot;DevOps&quot; thing.</p></li><li><p>
You think about cost and performance early.</p></li><li><p>
You instrument as you build: logs, metrics, and traces are part of the system from day one.</p></li><li><p>
You design for data quality and governance up front covering contracts, validation, lineage, and ownership</p></li></ul><p>
How You Think and Work</p><ul><li><p>
You reason from first principles when a problem is new, stay pragmatic when it isn't, and update your view when you learn more.</p></li><li><p>
You treat the trading desks, wealth and asset management, product, risk, finance, compliance, and research as customers of what you build, and communicate with them that way.</p></li><li><p>
You optimise for outcomes over output. A smaller, simpler thing that ships and works beats a bigger thing that doesn't.</p></li><li><p>
You take ownership end-to-end: design, ship, operate, improve.</p></li><li><p>
You say what you think including when it's an unpopular take. You change your mind when the argument is better.</p></li><li><p>
You make the people around you better. Reviews are real, juniors grow from working with you, and peers want to work with you again.</p></li><li><p>
You're curious about how markets work. Data engineering on its own won't keep you interested here.</p></li><li><p>
You're honest about what you know and what you don't, and quick to close the gap.</p></li><li><p>
You understand financial market data: order books, trades, reference data, portfolios, exposures. Crypto, TradFi, or both are a strong plus.</p></li></ul><p></p><h2 class="jobSectionHeader"><b>
Nice to Have</b></h2><ul><li><p>
Lakehouse experience with Apache Iceberg or Delta Lake.</p></li><li><p>
Familiarity with DataHub or similar metadata/lineage platforms.</p></li><li><p>
Rust. Some of our performance-critical services are written in it. Interest is welcome; fluency isn't required.</p></li></ul><p></p><h2 class="jobSectionHeader"><b>
What You&rsquo;ll Get</b></h2><ul><li><p>
A from-scratch mandate. You'll be among the first hires in CDT, and the platform, the standards, and the team culture are yours to shape with us.</p></li><li><p>
Strong partners. Close working relationships with Architecture, Infrastructure, Platform, and the desks themselves. You won't be building data in a vacuum.</p></li><li><p>
Autonomy on how you work. Flexible hours, remote-first, business-hours on-call shared across the team.</p></li><li><p>
A competitive salary package, with various benefits.</p></li><li><p>
A team that likes each other. Regular online get-togethers and a yearly onsite where everyone's in the same room.</p></li></ul><p></p><h2 class="jobSectionHeader"><b>
Our Recruitment Process</b></h2><p>
We&rsquo;re after those with the right skills and a conscious choice to join our field. The perfect fit? Someone who&rsquo;s driven, collaborative, acts with ownership and delivers solid, scalable outcomes. 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 Key</p></div>

Senior Data Engineer

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