backend developer

software engineer

.net developer

game developer

software developer

node.js developer

HaloScape

<div>
 
 
 About HaloScape
 
 
 
 Powered by AI. Built for life.
 
 
 
 
 
 HaloScape is a next-generation digital health companion designed to simplify and empower personal wellness. It combines sleep, stress, blood test insights, daily habits, and wearable data into one smart, personalized app helping users see the full picture of their health, take action, and build healthier lives.
 
 
 
 
 
 As part of the HaloScape team, you'll work on the design of a product that isn't just another wellness tracker it's a health super app redefining how individuals understand and manage their well-being.
 
 
 
 
 
 
 What You&rsquo;ll Do
 
 
 
 
 
 <ul>
 <li>
 Collaborate with the development team to design, implement, and maintain backend services for the HaloScape app
 </li>
 <li>
 Develop and optimize RESTful APIs for mobile and web applications
 </li>
 <li>
 Work with Firebase services (Cloud Functions, Auth, Firestore) to build scalable and secure features
 </li>
 <li>
 Gain hands-on experience with Node.js and containerization using Docker
 </li>
 <li>
 Support integration of third-party APIs, SDKs, and messaging/queue systems
 </li>
 <li>
 Write clean, maintainable code with a focus on performance and scalability
 </li>
 <li>
 Assist in monitoring, debugging, and improving existing backend infrastructure
 </li>
 </ul>
 
 
 
 
 
 What You&rsquo;ll Bring
 
 
 
 
 
 <ul>
 <li>
 Bachelor&rsquo;s or Master&rsquo;s student in Computer Engineering, Software Engineering, or a related field
 </li>
 <li>
 Practical development experience with the Node.js ecosystem (at least 1&ndash;2 concrete projects through coursework, personal projects, or internships)
 </li>
 <li>
 Familiarity with distributed systems fundamentals and at least one messaging/queue system
 </li>
 <li>
 Proficiency in SQL and familiarity with at least one NoSQL database
 </li>
 <li>
 Understanding of REST API design, error handling, pagination, and versioning
 </li>
 <li>
 Hands-on experience with Docker for containerization
 </li>
 <li>
 Strong communication skills and ability to work effectively in a team
 </li>
 <li>
 Curiosity about health tech, wearable devices, and personalized wellness
 </li>
 </ul>
 
 
 
 
 
 Ready to Shape the Future of Health?
 
 
 
 
 
 
 
 If you&rsquo;re a Backend Developer Intern
 
 who wants to do more than just write code if you want to help build the core of a platform that improves people&rsquo;s health and well-being we want to meet you.
 
 
 
 
 
 🌐 Learn more about HaloScape: haloscape.health
 
 
 
 
 
 
 *The HaloScape Intern program is a paid internship.
 
 
</div>

Backend Developer Intern

UR WORK

UR Work, vardiyal&#305; ekipler i&ccedil;in geli&#351;tirilmi&#351;, mobil &ouml;ncelikli ve &ccedil;ok dilli bir i&#351; g&uuml;c&uuml; y&ouml;netim platformudur. Platformumuz; vardiya planlama, g&ouml;rev y&ouml;netimi ve ger&ccedil;ek zamanl&#305; ileti&#351;imi tek bir platformda birle&#351;tirerek i&#351;letmelere verimlilik kazand&#305;r&#305;r.Pozisyon Hakk&#305;nda &#304;stanbul&rsquo;da ofisten &ccedil;al&#305;&#351;acak, tam zamanl&#305; ve deneyimli bir Backend Developer ar&#305;yoruz. Bu rolde, platformun sunucu taraf&#305; geli&#351;tirmesinden sorumlu olacak, g&uuml;venli, performansl&#305; ve &ouml;l&ccedil;eklenebilir altyap&#305;lar kuracaks&#305;n&#305;z.Sorumluluklar<ul><li>Backend servislerini geli&#351;tirmek ve s&uuml;rd&uuml;rmek</li><li>API&rsquo;leri tasarlamak ve frontend ile entegrasyonu sa&#287;lamak</li><li>Ger&ccedil;ek zamanl&#305; ileti&#351;im (WebSocket, WebRTC) altyap&#305;lar&#305;n&#305; kurmak</li><li>Veritaban&#305; tasar&#305;m&#305; ve optimizasyonu yapmak</li><li>Docker ve bulut altyap&#305;lar&#305;nda uygulamay&#305; &ouml;l&ccedil;eklenebilir hale getirmek</li><li>Performans sorunlar&#305;n&#305; analiz edip &ccedil;&ouml;zmek</li></ul>Aranan Nitelikler<ul><li>4+ y&#305;l profesyonel yaz&#305;l&#305;m geli&#351;tirme deneyimi</li><li>Node.js veya benzeri backend teknolojilerinde uzmanl&#305;k</li><li>PostgreSQL / SQL veritaban&#305; y&ouml;netiminde deneyim</li><li>API tasar&#305;m&#305; ve entegrasyonu konusunda tecr&uuml;be</li><li>Docker ve AWS/Azure/GCP gibi bulut servislerinde bilgi sahibi</li><li>WebRTC veya ger&ccedil;ek zamanl&#305; ileti&#351;im teknolojileri avantajd&#305;r</li><li>Analitik d&uuml;&#351;&uuml;nme, problem &ccedil;&ouml;zme ve ekip &ccedil;al&#305;&#351;mas&#305;na yatk&#305;nl&#305;k</li></ul>Sunulanlar<ul><li>Modern SaaS projesinin backend mimarisine katk&#305; f&#305;rsat&#305;</li><li>Global &ouml;l&ccedil;ekte b&uuml;y&uuml;meyi hedefleyen SaaS &uuml;r&uuml;n&uuml;nde yer alma f&#305;rsat&#305;</li><li>Modern SaaS projesinde yaz&#305;l&#305;m mimarisine katk&#305; f&#305;rsat&#305;</li></ul>&#304;&#351; T&uuml;r&uuml;: Tam zamanl&#305;Maa&#351;: 45.000,00TRY - 100.000,00TRY ayl&#305;kE&#287;itim:<ul><li>&Uuml;niversite (Tercih edilir)</li></ul>Deneyim:<ul><li>Yaz&#305;l&#305;m: 4 y&#305;l (Zorunlu)</li><li>Flutter: 4 y&#305;l (Tercih edilir)</li></ul>

Backend Developer

Trendyol Group

<div>
 
 
 ABOUT THE TEAM
 
 
 
 We&rsquo;re shaping the future of financial technology at Trendyol.
 
 
 As Trendyol&rsquo;s technology teams, we&rsquo;re not only building for today we&rsquo;re designing the financial experiences of tomorrow. From payment infrastructure and digital wallets to smart credit systems and personalized financial services, we create solutions that empower millions of users across our ecosystem.
 
 
 With Trendyol Pay, we enable fast, secure, and seamless payment journeys. Through Trendyol Finance, we develop inclusive and accessible products that simplify financial decisions.
 
 
 
 
 
 
 ABOUT THE ROLE
 
 
 
 As a Backend Developer at Trendyol, you will play a key role in designing, developing, and maintaining the core systems that power our products and services. You will work closely with cross-functional teams to deliver scalable, high-performance solutions that millions of users rely on every day. Leveraging modern technologies and best practices, you will help shape our backend architecture, ensure seamless integration with other services, and continuously improve our platforms to meet the evolving needs of our customers.
 
 
 
 
 
 
 Expected Qualifications
 
 
 <ul>
 <li>
 Team Player: Humble, lifelong learner with a customer-first mindset.
 </li>
 <li>
 Practical Knowledge: Proficient in OOP, Design Patterns, Clean Code, Software Craftsmanship culture, Refactoring, Unit, and Integration Testing.
 </li>
 <li>
 Experience: 2+ years of experience in at least one of the following languages: Java, Go, C#, Scala, Kotlin, Node.js.
 </li>
 <li>
 Database Management: Experience with relational/non-relational Database Management Systems such as PostgreSQL, Elasticsearch, Couchbase, etc.
 </li>
 <li>
 Messaging Patterns: Experience with messaging patterns like saga, outbox, and message brokers such as Kafka, RabbitMQ, etc.
 </li>
 <li>
 CI/CD Experience: Proficient in Continuous Delivery and Continuous Integration, familiar with infrastructure as code tools such as Terraform.
 </li>
 <li>
 Backend Services: Experience in building backend services using mainstream frameworks.
 </li>
 <li>
 Agile Mindset: Agile-minded team player with strong communication skills.
 </li>
 <li>
 Distributed Systems: Preferably experienced in fault-tolerant and loosely coupled distributed architectures.
 </li>
 <li>
 Containerized Experience: Experience with Kubernetes, observability, monitoring, and resource optimization is a significant plus.
 </li>
 <li>
 Language Skills: Good command of written and spoken English.
 </li>
 </ul>
 
 
 
 
 
 What We Offer
 
 
 
 A hybrid working model with flexibility &mdash; a schedule that helps you find the right balance between flexibility and team bonding, including work-from-abroad opportunities and a summer working model.
 
 
 A customizable FlexBenefits budget &mdash; Adjust your daily meal allowance, choose your health insurance package (and extend it to your spouse or children), and pick from additional benefits like fuel support or Trendyol shopping credits.
 
 
 Comprehensive wellbeing support &mdash; Take advantage of our extended health package, which includes annual mini health screenings, access to location-based in-house doctors, psychologist and dietitian support, and HPV vaccination coverage.
 
 
 Personalized training allowance and learning opportunities &mdash; Use your annual budget for any training or conference of your choice, explore our Learning Management System (LMS) anytime, and join in-person learning sessions offered throughout the year.
 
 
 Responsibility from day one &mdash; Take full ownership from the start in a culture where every voice is heard and valued.
 
 
 A diverse, international team &mdash; Collaborate with global peers across our offices in Berlin, Amsterdam, Dubai, and beyond, in a startup-spirited and collaborative environment.
 
 
 Opportunities to grow with the best &mdash; Tackle meaningful challenges, develop through hands-on experience, and grow with the support of expert guidance and global mentoring.
 
 
 Meaningful connections beyond tasks &mdash; Be part of team rituals, events, and social activities that help us stay connected and inspired.
 
 
 
 
 
 
 
 
 
 Take the Next Step
 
 
 
 If this role excites you, apply now and let&rsquo;s take the next step together.
 
 
 Want to get to know the team better first? Explore our Career Website, LinkedIn, or YouTube to learn more about #LifeatTrendyol and how we work.
 
</div>

Trendyol

<div><div><div>ABOUT THE TEAM</div><div></div><div> 
We&rsquo;re shaping the future of financial technology at Trendyol.</div><div>
As Trendyol&rsquo;s technology teams, we&rsquo;re not only building for today we&rsquo;re designing the financial experiences of tomorrow. From payment infrastructure and digital wallets to smart credit systems and personalized financial services, we create solutions that empower millions of users across our ecosystem.</div><div>
With Trendyol Pay, we enable fast, secure, and seamless payment journeys. Through Trendyol Finance, we develop inclusive and accessible products that simplify financial decisions.</div><div></div><div> 
We are united by a shared purpose:To create a positive impact in our ecosystem by enabling commerce through technology</div><div></div><div> 
ABOUT THE ROLE</div><div>
As a Backend Developer at Trendyol, you will play a key role in designing, developing, and maintaining the core systems that power our products and services. You will work closely with cross-functional teams to deliver scalable, high-performance solutions that millions of users rely on every day. Leveraging modern technologies and best practices, you will help shape our backend architecture, ensure seamless integration with other services, and continuously improve our platforms to meet the evolving needs of our customers.</div></div>
<div><div><h3 class="jobSectionHeader">Expected Qualifications</h3><ul><li><ul><li>
Team Player: Humble, lifelong learner with a customer-first mindset.</li><li>
Practical Knowledge: Proficient in OOP, Design Patterns, Clean Code, Software Craftsmanship culture, Refactoring, Unit, and Integration Testing.</li><li>
Experience: 2+ years of experience in at least one of the following languages: Java, Go, C#, Scala, Kotlin, Node.js.</li><li>
Database Management: Experience with relational/non-relational Database Management Systems such as PostgreSQL, Elasticsearch, Couchbase, etc.</li><li>
Messaging Patterns: Experience with messaging patterns like saga, outbox, and message brokers such as Kafka, RabbitMQ, etc.</li><li>
CI/CD Experience: Proficient in Continuous Delivery and Continuous Integration, familiar with infrastructure as code tools such as Terraform.</li><li>
Backend Services: Experience in building backend services using mainstream frameworks.</li><li>
Agile Mindset: Agile-minded team player with strong communication skills.</li><li>
Distributed Systems: Preferably experienced in fault-tolerant and loosely coupled distributed architectures.</li><li>
Containerized Experience: Experience with Kubernetes, observability, monitoring, and resource optimization is a significant plus.</li><li>
Language Skills: Good command of written and spoken English.</li></ul></li></ul></div></div>
<div><div>What We Offer</div><div>
A hybrid working model with flexibility &mdash; a schedule that helps you find the right balance between flexibility and team bonding, including work-from-abroad opportunities and a summer working model.</div><div>
A customizable FlexBenefits budget &mdash; Adjust your daily meal allowance, choose your health insurance package (and extend it to your spouse or children), and pick from additional benefits like fuel support or Trendyol shopping credits.</div><div>
Comprehensive wellbeing support &mdash; Take advantage of our extended health package, which includes annual mini health screenings, access to location-based in-house doctors, psychologist and dietitian support, and HPV vaccination coverage.</div><div>
Personalized training allowance and learning opportunities &mdash; Use your annual budget for any training or conference of your choice, explore our Learning Management System (LMS) anytime, and join in-person learning sessions offered throughout the year.</div><div>
Responsibility from day one &mdash; Take full ownership from the start in a culture where every voice is heard and valued.</div><div>
A diverse, international team &mdash; Collaborate with global peers across our offices in Berlin, Amsterdam, Dubai, and beyond, in a startup-spirited and collaborative environment.</div><div>
Opportunities to grow with the best &mdash; Tackle meaningful challenges, develop through hands-on experience, and grow with the support of expert guidance and global mentoring.</div><div>
Meaningful connections beyond tasks &mdash; Be part of team rituals, events, and social activities that help us stay connected and inspired.</div><div></div><div> 
Take the Next Step</div><div>
If this role excites you, apply now and let&rsquo;s take the next step together.</div><div>
Want to get to know the team better first? Explore our Career Website, LinkedIn, or YouTube to learn more about #LifeatTrendyol and how we work.</div></div></div>

TBI BANK

<div>Join the best bank to work for in Bulgaria* 
Who we are: 
Do you want to join a well-established bank with a start-up culture? No, we&rsquo;re not joking! 
We, at tbi, have been one the most profitable banks for years and we are growing at a fast pace. We&rsquo;re a bank with a long history of success that operates as a start-up and we&rsquo;re always on the lookout for new opportunities to grow our business. How do we do that?
It's all about our people. Our team is made up of brave, passionate and caring people who don&rsquo;t just want to follow the same path &ndash; we want to transform into mobile-first, state-of-the-art lifestyle ecosystem. Our colleagues love working here &ndash; 80% of them would recommend tbi as an employer to their friends and family. Our people are engaged in challenging and meaningful work, inspired to grow their potential and career, encouraged to learn and empowered to take decisions. That&rsquo;s not corporate babble, it&rsquo;s what our people say.
Do you want to play a key role in our unique success story?
If so, we're looking for a Software Developer to join our team on the journey to success! 
 
 
What You&rsquo;ll do:<ul><li>
Develop, test, and maintain JavaScript and .NET applications with a strong focus on SQL databases</li><li>
Collaborate with cross-functional teams to design and implement eCommerce and lending financial services solutions</li><li>
Write clean, efficient, and maintainable code</li><li>
Participate in code reviews and provide constructive feedback</li><li>
Ensure the performance, reliability, and security of applications</li><li>
Stay updated on emerging technologies and industry best practices</li><li>
Troubleshoot and debug issues as they arise</li><li>
Contribute to continuous improvement initiatives and process optimization</li></ul> 
What you&rsquo;ll need to succeed:<ul><li>
Strong experience in JavaScript development (Node.js is a plus)</li><li>
Experience in the development of solutions in the financial industry (Core banking, CRM, ERP, BPM systems) would be considered an advantage</li><li>
Basic knowledge of HTML, CSS, jQuery, and Ajax</li><li>
Proficiency in SQL and relational database design (MS SQL, MySQL, PostgreSQL, Oracle, etc.)</li><li>
Fluency in English, both written and spoken</li><li>
Ability to learn fast and work in a dynamic multicultural environment</li></ul>
What we offer:<ul><li>
Seize the opportunity to grow your career</li><li>
Engage in exciting and meaningful work</li><li>
Get recognition for your work and attitude</li><li>
Become part of a large, friendly and supportive team</li><li>
Get additional private health insurance</li><li>
Receive special prices for multisport card and multiple retailers</li><li>
Obtain preferential prices for our banking products</li><li>
Enjoy a great location in Sofia&rsquo;s city centre near National Palace of Culture and South Park</li></ul> 
Visit our Career Page to learn more about what makes us different. 
If this sounds like something you&rsquo;d be interested in, we'd love to hear from you!
To apply for this position, please send us your CV in English.<div>
We'd love to get back to everyone, but due to the number of applications we receive, we can only contact the shortlisted candidates. 
 
<ul><li>We are ranked the top bank and top 4 employer to work for in Bulgaria according to Kaderabotim.bg official 2024 employer rankings.</li></ul></div> 
All applications are treated with utmost confidentiality. 
 
By submitting your job application to tbi bank, you confirm that you have read the document named &ldquo;Information related to personal data processing for job applicants&rdquo; publicly available on tbi Career page.</div>

Software Developer

Pragmatike

<div>
 
 About The Job
 
 
 
 
 Location:
 
 Fully remote, EU timezone (CET +/- 2 hours)
 
 
 
 Start date:
 
 ASAP
 
 
 
 Languages:
 
 English is mandatory; French is a plus
 
 
 We are currently building a next-generation
 
 payment solution
 
 that simplifies the management, reconciliation, and complexities of accepting
 
 split payments online
 
 . The platform allows businesses of all sizes to benefit from innovative payment methods, unlock new revenue streams, and recover funds that would otherwise be lost due to insufficient balances.
 
 
 If you're excited about working on ambitious projects in a dynamic and flexible environment, we'd love to hear from you!
 
 
 
 Responsabilities
 
 
 
 <ul>
 <li>
 Design, develop, and maintain scalable web applications with a 50/50 focus on backend and frontend.
 </li>
 <li>
 Implement backend services using Node.js and TypeScript.
 </li>
 <li>
 Build dynamic, responsive, and user-friendly interfaces with React.
 </li>
 <li>
 Develop and optimize cloud-based applications on AWS.
 </li>
 <li>
 Collaborate with product managers, designers, and other engineers to deliver high-quality features.
 </li>
 <li>
 Write clean, maintainable, and well-tested code.
 </li>
 <li>
 Participate in code reviews and contribute to best practices across the team.
 
 
 
 </li>
 </ul>
 
 Required Qualifications
 
 
 
 <ul>
 <li>
 Strong experience with Node.js and TypeScript for backend development.
 </li>
 <li>
 Solid knowledge of React and modern frontend ecosystems (hooks, state management, etc.).
 </li>
 <li>
 Experience deploying and maintaining applications on AWS (Lambda, ECS, S3, API Gateway, etc.).
 </li>
 <li>
 Understanding of RESTful APIs and microservices architecture.
 </li>
 <li>
 Experience with relational and/or NoSQL databases.
 </li>
 <li>
 Familiarity with CI/CD pipelines and automated testing.
 </li>
 <li>
 Excellent problem-solving skills and the ability to work in a collaborative environment.
 </li>
 <li>
 Fluent in English (spoken &amp; written).
 
 
 
 </li>
 </ul>
 Pragmatike is dedicated to a fair, transparent, and inclusive recruitment process. We ensure that no applicant is discriminated against based on age, disability, gender, gender identity or expression, marital or civil partner status, pregnancy or maternity, race, religion or belief, sex, or sexual orientation. In accordance with the General Data Protection Regulation (GDPR), your personal data will be processed lawfully, fairly, and securely. We collect and use your personal data solely for recruitment purposes, including sharing it with our client(s) for employment consideration. You have the right to request access, correction, or deletion of your data at any time. We are committed to maintaining the confidentiality and security of your information throughout the recruitment process.
</div>

Fullstack developer (Node.js/TypeScript + React + AWS)

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