backend software engineer

Trust In SODA

<div>
 
 🚀
 
 Backend Software Engineer (C# / .NET / Azure)
 
 🚀
 
 
 
 
 
 We&rsquo;re working with a fast-growing tech company that&rsquo;s rethinking how data and insights are created globally. They care deeply about clean code, smart delivery, and building software that works reliably in the real world (not just on paper).
 
 
 
 
 
 
 Role: Back End Engineer- C#/ .NET
 
 
 
 
 Location: Istanbul- 1x per month
 
 
 
 
 Salary: &euro;55k Euros
 
 
 
 
 
 
 You&rsquo;ll design, build, and run backend systems using C#, .NET, and Microsoft Azure.
 
 
 
 
 
 What You&rsquo;ll Be Doing
 
 <ul>
 <li>
 Building backend services with C#, .NET, Azure &amp; CosmosDB
 </li>
 <li>
 Owning features from first commit to production monitoring
 </li>
 <li>
 Keeping systems healthy with testing, CI/CD, and observability
 </li>
 <li>
 Working closely with product and engineering across the full lifecycle
 </li>
 </ul>
 
 
 
 
 What You&rsquo;ll Bring
 
 <ul>
 <li>
 5+ years of backend development experience
 </li>
 <li>
 Strong skills in C# and .NET
 </li>
 <li>
 Experience building scalable, secure APIs
 </li>
 <li>
 Hands-on cloud experience (Azure is a big plus)
 </li>
 <li>
 Familiarity with CI/CD, automation, and modern DevOps practices
 </li>
 <li>
 SaaS experience
 </li>
 <li>
 Some frontend exposure (TypeScript / React)
 </li>
 </ul>
 
 
 
 
 
 Curious? Drop me a message for a confidential chat.
 
 
</div>

Back End Developer

SevenApps

<div>
 
 About Our Team
 
 
 
 We are a forward-thinking team seeking a talented Software Engineer with a passion for Python and backend development. We thrive on innovation and are committed to using a variety of technologies to solve complex problems.
 
 
 
 Role Description
 
 
 
 As a Software Engineer at our company, you'll play a pivotal role in developing and maintaining Python-based backend applications. Your expertise in Python is crucial, but your ability to adapt to other languages like NodeJS, Java, and GO for internal projects will set you apart.
 
 
 
 Key Responsibilities
 
 
 
 <ul>
 <li>
 Design, develop, and maintain container-based applications.
 </li>
 <li>
 Monitor application performance with tools like DataDog.
 </li>
 <li>
 Manage Docker and Kubernetes environments.
 </li>
 <li>
 Develop bridge code for cloud environments (e.g., Replicate, Modal).
 </li>
 <li>
 Deploy applications to GCP App Engine, Cloud Run, and Heroku.
 </li>
 <li>
 Proficiency in OOP, Design Patterns, and Clean Code principles.
 </li>
 <li>
 Write and maintain tests for your code.
 </li>
 <li>
 Integrate projects with CICD platforms like GitHub Actions and Jenkins.
 
 
 </li>
 </ul>
 
 Requirements
 
 
 
 <ul>
 <li>
 Bachelor's degree in Computer Science or related field.
 </li>
 <li>
 Backend development experience with Python.
 </li>
 <li>
 Proficiency in Python tools (PYPI, Pyenv, Virtual Env, Pipenv, Flake8, Black).
 </li>
 <li>
 Strong knowledge of PostgreSQL and familiarity with Aurora.
 </li>
 <li>
 Basic understanding of machine learning libraries (e.g., Torch, TensorFlow).
 </li>
 <li>
 Excellent problem-solving, communication, and interpersonal skills.
 </li>
 <li>
 Ability to work both independently and in a team.
 </li>
 <li>
 Fluency in English, both verbal and written.
 </li>
 <li>
 Deep knowledge of Firebase tools and experience in writing various tests
 
 
 </li>
 </ul>
 
 Our Tech Stack
 
 
 
 <ul>
 <li>
 Python on FastAPI
 </li>
 <li>
 GCP, AWS, Heroku for deployment
 </li>
 <li>
 Datadog for APM
 </li>
 <li>
 GitHub Actions for CICD
 </li>
 <li>
 PostgreSQL for RDBMS
 </li>
 <li>
 Modal and Replicate for GPU-intensive projects
 
 
 </li>
 </ul>
 
 Benefits
 
 
 
 
 What's in it for you
 
 
 
 <ul>
 <li>
 Private Health Insurance: Stay covered with our comprehensive health plan
 </li>
 <li>
 Meal &amp; Transportation Allowance: Fuel your commute and appetite, stress-free!
 </li>
 <li>
 Snacks &amp; Cozy Office Vibes: Work in a chill space stocked with treats you'll love
 </li>
 <li>
 Learning Stipend: Invest in yourself&mdash;we'll cover part of your growth journey!
 </li>
 <li>
 Marriage Support: Celebrate your big day with our special financial contribution to mark the occasion
 </li>
 </ul>
</div>

Back-end Developer (Python) - On Site

Seven Apps

<div>About Our Team
We are a forward-thinking team seeking a talented Software Engineer with a passion for Python and backend development. We thrive on innovation and are committed to using a variety of technologies to solve complex problems.
Role Description
 
 
As a Software Engineer at our company, you'll play a pivotal role in developing and maintaining Python-based backend applications. Your expertise in Python is crucial, but your ability to adapt to other languages like NodeJS, Java, and GO for internal projects will set you apart.<h3 class="jobSectionHeader">
Key Responsibilities</h3><ul>
<li>Design, develop, and maintain container-based applications.
</li><li>Monitor application performance with tools like DataDog.
</li><li>Manage Docker and Kubernetes environments.
</li><li>Develop bridge code for cloud environments (e.g., Replicate, Modal).
</li><li>Deploy applications to GCP App Engine, Cloud Run, and Heroku.
</li><li>Proficiency in OOP, Design Patterns, and Clean Code principles.
</li><li>Write and maintain tests for your code.
</li><li>Integrate projects with CICD platforms like GitHub Actions and Jenkins.
</li></ul>Requirements<ul>
<li>
Bachelor's degree in Computer Science or related field.
</li><li>Backend development experience with Python.
</li><li>Proficiency in Python tools (PYPI, Pyenv, Virtual Env, Pipenv, Flake8, Black).
</li><li>Strong knowledge of PostgreSQL and familiarity with Aurora.
</li><li>Basic understanding of machine learning libraries (e.g., Torch, TensorFlow).
</li><li>Excellent problem-solving, communication, and interpersonal skills.
</li><li>Ability to work both independently and in a team.
</li><li>Fluency in English, both verbal and written.
</li><li>Deep knowledge of Firebase tools and experience in writing various tests.</li>
</ul>
Our Tech Stack
<ul><li>Python on FastAPI
</li><li>GCP, AWS, Heroku for deployment</li>
<li>Datadog for APM</li>
<li>GitHub Actions for CICD</li>
<li>PostgreSQL for RDBMS</li>
<li>Modal and Replicate for GPU-intensive projects</li>
</ul>
Benefits 
What's in it for you<ul>
<li>
Private Health Insurance: Stay covered with our comprehensive health plan.</li>
<li>Meal &amp; Transportation Allowance: Fuel your commute and appetite, stress-free!</li>
<li>Snacks &amp; Cozy Office Vibes: Work in a chill space stocked with treats you&rsquo;ll love.</li>
<li>Learning Stipend: Invest in yourself&mdash;we&rsquo;ll cover part of your growth journey!</li>
<li>Marriage Support: Celebrate your big day with our special financial contribution to mark the occasion.</li></ul></div>

Orion Innovation Turkey

<div>
 
 
 Who are we?
 
 
 
 
 
 
 At
 
 Orion Innovation Turkey
 
 , we build scalable, secure and high-performance software solutions. Our teams collaborate with colleagues across different countries, creating impactful products in a truly global environment.
 
 
 
 
 
 
 What are we doing?
 
 
 
 
 
 
 Currently, we are working on a telecommunications testing product and developing a wrapper layer on top of it to enhance usability and integration. This includes building API services and supporting backend components that allow seamless interaction with the testing product, ensuring scalability, flexibility, and high performance. As part of our team, you will contribute to designing and implementing these backend services.
 
 
 
 
 
 While your first focus will be on this product, there may be opportunities to contribute to other projects in the future as our portfolio evolves.
 
 
 
 
 
 
 Our tech stack:
 
 
 
 
 
 <ul>
 <li>
 Languages &amp; Frameworks: Java, Spring Boot, Python, FastAPI, Celery
 </li>
 <li>
 Databases: MySQL, Redis, influxDB
 </li>
 <li>
 Infrastructure: Linux, Docker, Kubernetes, Bash Scripting, Ansible
 </li>
 <li>
 CI/CD &amp; Version Control: GitLab CI/CD, Git
 </li>
 <li>
 Observability &amp; Monitoring: ELK Stack (Elasticsearch, Logstash, Kibana), Filebeat, Grafana, Prometheus
 </li>
 <li>
 Testing &amp; Performance: JMeter, Selenium
 </li>
 </ul>
 
 
 
 
 
 What will you do in an Agile team?
 
 
 
 
 
 <ul>
 <li>
 Design and develop scalable, secure, and high-performance backend services.
 </li>
 <li>
 Build and maintain REST APIs.
 </li>
 <li>
 Work with Docker and Kubernetes for containerized deployments.
 </li>
 <li>
 Use observability and monitoring tools to ensure system health.
 </li>
 <li>
 Flexible to provide occasional support outside regular working hours due to international collaboration and time zone differences, ensuring critical issues can be addressed promptly
 </li>
 <li>
 Perform performance and load testing with JMeter.
 </li>
 <li>
 Actively participate in the full software development lifecycle.
 </li>
 <li>
 Write clean, maintainable code following best practices.
 </li>
 <li>
 Prepare technical documentation and contribute to team knowledge sharing.
 </li>
 </ul>
 
 
 
 
 
 What we expect from you?
 
 
 
 
 
 <ul>
 <li>
 Bachelor&rsquo;s degree in Computer Science, Computer Engineering, or related field.
 </li>
 <li>
 1&ndash;3 years of professional backend development experience.
 </li>
 <li>
 Strong knowledge of Java and Python.
 </li>
 <li>
 Strong knowledge of OOP &amp; Docker.
 </li>
 <li>
 Hands-on experience with REST API development.
 </li>
 <li>
 Strong knowledge of relational databases.
 </li>
 <li>
 Good knowledge of Linux.
 </li>
 <li>
 Experience with design principles and patterns.
 </li>
 <li>
 Knowledge of networking and TCP/IP concepts, with tools like Wireshark.
 </li>
 <li>
 Excellent communication skills in English,
 
 both written and spoken.
 
 </li>
 </ul>
 
 
 
 
 
 Nice to have:
 
 
 
 
 
 <ul>
 <li>
 Hands-on experience with CI/CD and automation.
 </li>
 <li>
 Experience with observability and monitoring tools (ELK Stack, Filebeat, Grafana, Prometheus).
 </li>
 <li>
 Knowledge of Kubernetes.
 </li>
 <li>
 Knowledge of Agentic AI and Large Language Models
 </li>
 <li>
 Hands-on experience with performance testing (JMeter).
 </li>
 <li>
 Experience with frontend technologies (React, TypeScript).
 </li>
 <li>
 Understanding of modern microservices architectures.
 </li>
 </ul>
 
 
 
 
 
 What we can offer you?
 
 
 
 
 
 <ul>
 <li>
 
 Continuous growth and learning
 
 &ndash; Enjoy access to a wide range of in-house and external training programs designed to help you expand your skills, discover new strengths, and stay ahead in your career journey.
 </li>
 <li>
 
 A truly international environment
 
 &ndash; Work side by side with passionate colleagues from all over the world, bringing together diverse perspectives, cultures, and experiences that make every day exciting and enriching.
 </li>
 <li>
 
 Rewarding career benefits
 
 &ndash; Along with personal and professional development, you&rsquo;ll enjoy a competitive compensation package that truly values your contribution and dedication.
 </li>
 <li>
 
 More than just a workplace
 
 &ndash; We believe in creating an atmosphere where collaboration, curiosity, and innovation thrive, so you&rsquo;ll feel inspired, supported, and valued from day one.
 </li>
 </ul>
 
 
 
 
 Orion is an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, color, creed, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, citizenship status, disability status, genetic information, protected veteran status, or any other characteristic protected by law.
 
</div>

Backend Developer

ColendiBank

<div>
 
 
 About Us
 
 
 
 ColendiBank is T&uuml;rkiye's first AI-powered digital native universal deposit bank, pioneering the integration of advanced technology with accessible financial services. Officially launched in 2024 following the acquisition of a coveted digital banking license, the bank caters to individuals and SMEs with a focus on micro credit and innovative deposit services. As a fully digital institution, ColendiBank leverages a cutting-edge, scalable core banking platform to deliver seamless, secure, and user-friendly experiences. Its commitment to innovation positions it as a leader in redefining digital banking in T&uuml;rkiye.
 
 
 
 
 
 
 Job Description
 
 
 
 We are seeking
 
 Java Developers
 
 who will be responsible for designing, developing, and maintaining robust and scalable backend systems that support ColendiBank&rsquo;s digital banking platforms. This role will contribute to the delivery of reliable, high-quality software solutions while helping to shape the technical foundation and engineering of T&uuml;rkiye&rsquo;s AI first digital-native deposit bank.
 
 
 
 
 
 
 Key Responsibilities
 
 
 <ul>
 <li>
 Develop and maintain end-to-end software solutions across a wide range of projects, from design and implementation to integration and delivery.
 </li>
 <li>
 Influence backend architecture by defining technology stack choices, improving development workflows, and promoting clean code principles and engineering standards.
 </li>
 <li>
 Establish and uphold non-functional requirements such as performance, scalability, and reliability to ensure production-grade software quality.
 </li>
 <li>
 Continuously enhance and refactor existing systems to support new business requirements, user expectations, and emerging technologies.
 </li>
 <li>
 Design and develop RESTful APIs that follow modern development practices and ensure seamless integration with other systems and platforms.
 </li>
 <li>
 Write clean, modular, and maintainable code with a strong focus on testability and long-term scalability.
 </li>
 </ul>
 
 
 
 
 
 What We&rsquo;re Looking For
 
 
 <ul>
 <li>
 Bachelor's degree in Computer Engineering, Computer Science or IT-related fields.
 </li>
 <li>
 Minimum 5 years of professional experience as a developer within the banking sector.
 </li>
 <li>
 Strong hands-on experience in Java development, with a solid understanding of software architecture.
 </li>
 <li>
 Proven track record of building and supporting complex applications at scale in production environments.
 </li>
 <li>
 Deep knowledge of Object-Oriented Programming and modern Java frameworks.
 </li>
 <li>
 Advanced proficiency with Spring and Spring Boot.
 </li>
 <li>
 Demonstrated experience in building high-performance, multi-threaded Java applications with the ability to balance synchronous and asynchronous processing.
 </li>
 <li>
 Practical experience working with relational databases, especially PostgreSQL, and NoSQL databases such as Couchbase and MongoDB, as well as ORM tools.
 </li>
 <li>
 Familiarity with version control and CI/CD tools, including Git, Maven, and Jenkins.
 </li>
 <li>
 Proven ability to solve complex, real-world technical problems.
 </li>
 <li>
 Cloud experience is a strong advantage.
 </li>
 <li>
 Bonus if you have experience developing backend services that support web or mobile frontends.
 </li>
 </ul>
 
 
 
 
 
 Join Us
 
 
 
 At ColendiBank, you&rsquo;ll play a key role in redefining the retail banking experience. We offer opportunities for professional growth in a collaborative, inclusive environment, contributing to a pioneering journey in the digital banking landscape.
 
 
 
 
 
 Become a core part of our journey. Join ColendiBank as we build the future of digital banking.
 
 
 
 
 
 
 ColendiBank is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.
 
 
</div>

Java Developer

Sürat Kargo

<div>
 
 
 Qualifications &amp; Skills
 
 
 
 
 
 <ul>
 <li>
 Bachelor&rsquo;s degree in Computer Engineering, Software Engineering, or a related technical field
 </li>
 <li>
 Minimum 5 years of hands-on experience in backend software development
 </li>
 <li>
 Strong expertise in .NET Core, C#, Web API, and Entity Framework Core
 </li>
 <li>
 Solid understanding and practical experience with Clean Architecture and Domain Driven Design (DDD) principles
 </li>
 <li>
 Proven experience in designing scalable, high-performance, and maintainable backend systems
 </li>
 <li>
 Strong proficiency in MS SQL (required); experience with PostgreSQL and/or MongoDB is a plus
 </li>
 <li>
 Hands-on experience with Elasticsearch, including indexing, search optimization, and performance tuning
 </li>
 <li>
 Experience working with Redis and other distributed systems concepts (caching strategies, pub/sub, data consistency)
 </li>
 <li>
 Good knowledge of microservices architecture and RESTful API design
 </li>
 <li>
 Experience with cloud platforms such as Azure and/or AWS is an advantage
 </li>
 <li>
 Proficient in Git-based version control systems (Git, GitHub, GitLab)
 </li>
 <li>
 Basic knowledge of React or Angular is a plus
 </li>
 <li>
 Strong analytical thinking, problem-solving, and architectural decision-making skills
 </li>
 <li>
 Excellent communication skills and ability to collaborate effectively within a team
 </li>
 <li>
 Proactive, ownership-driven, and results-oriented mindset
 </li>
 <li>
 Fluent in English, capable of working with global and cross-functional teams
 </li>
 </ul>
 
 
 
 
 
 Key Responsibilities
 
 
 
 
 
 <ul>
 <li>
 Design, develop, and maintain scalable and high-performance backend and/or frontend applications aligned with business objectives,
 </li>
 <li>
 Take ownership of end-to-end software development lifecycle &mdash; including analysis, design, implementation, testing, deployment, and maintenance,
 </li>
 <li>
 Collaborate closely with business analysts, architects, project managers, and other development teams to deliver effective and innovative solutions,
 </li>
 <li>
 Participate in architectural design and decision-making processes to ensure system scalability, performance, and maintainability,
 </li>
 <li>
 Conduct code reviews to uphold coding standards, best practices, and maintain code quality across projects,
 </li>
 <li>
 Proactively identify and resolve performance bottlenecks, technical risks, and system inefficiencies,
 </li>
 <li>
 Mentor junior developers and support their technical growth through guidance and code reviews,
 </li>
 <li>
 Engage in DevOps, CI/CD, and automation practices to enhance deployment efficiency and reliability,
 </li>
 <li>
 Stay current with emerging technologies, frameworks, and design patterns, continuously bringing innovation into the development cycle,
 </li>
 <li>
 Take ownership of assigned tasks and ensure delivery of clean, testable, and high-quality code within defined timelines.
 </li>
 </ul>
 
 
</div>

Backend Developer Specialist

Arena

<div>
 
 Bringing together more than 10.000 business partners with the world's leading technology brands in Turkey, Arena is the leading technology products provider in the country. The company manages a wide range of products such as information technologies, telecommunications, consumer electronics, retail and internet retailing, by following closely every development in technology.
 
 
 
 
 
 Since its establishment in 1991, Arena has been sustaining the mission of breaking new grounds with great ability to follow the rapid developments in market conditions and to anticipate consumer expectations. This is why the company has been keeping making various innovations. It is among the biggest technology companies in Turkey to deliver the right products to customers via reliable business partners.
 
 
 
 
 
 At Arena, diversity, equity, and inclusion (DEI) are central to who we are. We are committed to creating a workplace where everyone &mdash; regardless of age, gender, ethnicity, or background &mdash; can learn, grow, and thrive. DEI is not just a policy for us; it's a shared responsibility and a core part of our culture.
 
 
 
 
 
 We are looking for a skilled Software Developer who is passionate about creating scalable, high-quality systems and contributing to the evolution of modern, AI-driven products.
 
 
 
 
 
 
 Qualifications:
 
 
 <ul>
 <li>
 Bachelor&rsquo;s degree in Computer Science, Software Engineering or related engineering discipline.
 </li>
 <li>
 3+ years of hands-on experience with C# and .NET Core / ASP.NET Web API.
 </li>
 <li>
 Strong knowledge of backend architecture patterns (clean architecture, modular design, microservices).
 </li>
 <li>
 Experience with REST and GraphQL API design, security and versioning.
 </li>
 <li>
 Solid experience in database design and data access (SQL, NoSQL, Vector Databases, ORM tools).
 </li>
 <li>
 Experience with real-time and asynchronous communication (WebSocket, SignalR, message queues).
 </li>
 <li>
 Strong understanding of clean code practices and SOLID principles, applied pragmatically.
 </li>
 <li>
 Experience with testing, code quality and maintainability practices.
 </li>
 <li>
 Familiarity with Agile methodologies and CI/CD pipelines.
 </li>
 <li>
 Experience with Python and FastAPI, especially for AI-oriented or integration-heavy services.
 </li>
 <li>
 Familiarity with LLM / AI integration concepts.
 </li>
 <li>
 Comfortable working in product-oriented, fast-paced teams.
 </li>
 <li>
 Professional proficiency in English.
 </li>
 </ul>
 
 
 
 
 
 Responsibilities:
 
 
 <ul>
 <li>
 Design, develop and maintain scalable backend services and web applications.
 </li>
 <li>
 Take an active role in new product development and platform evolution.
 </li>
 <li>
 Build API-first, secure and reusable backend components.
 </li>
 <li>
 Develop real-time and asynchronous systems and external service integrations.
 </li>
 <li>
 Use AI-assisted development tools (code generation, refactoring, test generation, documentation) to improve delivery speed and quality.
 </li>
 <li>
 Contribute to architecture decisions, code reviews and engineering best practices.
 </li>
 <li>
 Prepare technical documentation and release notes.
 </li>
 <li>
 Contribute to unit testing, code quality practices and CI/CD pipelines.
 </li>
 </ul>
 
 
 
 
 &ldquo;Yapaca&gbreve;&inodot;n&inodot;z i&scedil; ba&scedil;vurular&inodot; Ki&scedil;isel Verilerin Korunmas&inodot; Kanunu (&ldquo;KVKK&rdquo;) ve ilgili mevzuat kapsam&inodot;nda otomatik yollarla i&scedil;lenecektir. Detayl&inodot; bilgi i&ccedil;in Ayd&inodot;nlatma Metnini (https://www.arena.com.tr/hakkimizda/kvkk-aydinlatma-beyannamesi) inceleyebilirsiniz.&rdquo;
 
</div>

Senior / Mid Software Developer

Explore 284+ Backend software engineer in Istanbul Turkey this January. Find roles across top companies and apply now to boost your career.

284 backend software engineer jobs IN Istanbul Turkey

Back End Developer

Back-end Developer (Python) - On Site

Back-end Developer (Python) - On Site

Backend Developer

Java Developer

Backend Developer Specialist

Senior / Mid Software Developer