senior software engineer (java)

back-end developer

forward deployment engineer Jobs in Istanbul

forward deployment engineer

front end engineer

full-stack engineer (back-end skewed) Jobs in Istanbul

full-stack engineer (back-end skewed)

backend engineer

Commencis

<div>
 <p>
  We are looking for a highly motivated and experienced
  <strong>
   Senior Software Engineer (Java)
  </strong>
  to join our team.
 </p>
 <p>
  <br/>
 </p>
 <p>
  <strong>
   Senior Software Engineer (Java)
  </strong>
  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.
 </p>
 <p>
  <br/>
 </p>
 <p>
  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.
 </p>
 <p>
  <br/>
 </p>
 <p>
  <strong>
   If you are curious by nature, adaptive, collaborative, and always one step ahead, then join us and be a Commencer!
  </strong>
 </p>
 <p>
  <br/>
 </p>
 <p>
  <strong>
   Responsibilities
  </strong>
 </p>
 <p>
  <br/>
 </p>
 <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>
 <p>
  <br/>
 </p>
 <p>
  <strong>
   Qualifications
  </strong>
 </p>
 <p>
  <br/>
 </p>
 <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>
 <p>
  <br/>
 </p>
 <p>
  <strong>
   Why Commencis?
  </strong>
 </p>
 <p>
  <br/>
 </p>
 <p>
  We want people to thrive at Commencis. Here&rsquo;s what Commencers like about working here:
 </p>
 <p>
  <br/>
 </p>
 <p>
  <strong>
   Competitive Compensation &amp; Benefits:
  </strong>
  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.
 </p>
 <p>
  <br/>
 </p>
 <p>
  <strong>
   Happier Weekdays:
  </strong>
  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.
 </p>
 <p>
  <br/>
 </p>
 <p>
  <strong>
   Never Stop Learning:
  </strong>
  We support learning and development programs for almost anything. Additionally, we provide access to leading online e-learning platforms like Udemy and various libraries.
 </p>
 <p>
  <br/>
 </p>
 <p>
  <strong>
   Community &amp; Socials:
  </strong>
  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.
 </p>
 <p>
  <br/>
 </p>
 <p>
  <strong>
   Open Culture:
  </strong>
  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.
 </p>
 <p>
  <br/>
 </p>
 <p>
  <strong>
   About Commencis
  </strong>
 </p>
 <p>
  <br/>
 </p>
 <p>
  Join us in paving the way for a thriving digital society!
 </p>
 <p>
  <br/>
 </p>
 <p>
  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.
 </p>
 <p>
  <br/>
 </p>
 <p>
  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.
 </p>
 <p>
  <br/>
 </p>
 <p>
  If you share the same passion with our fellow Commencers, then let us unleash your world-class potential!
 </p>
 <p>
  <br/>
 </p>
 <p>
  <strong>
   We will process your personal data as part of our recruitment procedures. To find out more, please consult our
   <u>
    Candidate Privacy Notices
   </u>
   .
  </strong>
 </p>
 <p>
  <em>
   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.
  </em>
 </p>
 <p>
 </p>
</div>


Senior Software Engineer (Java)

<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>

<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)

Viktor

<div><p>Viktor is the AI coworker. It lives in Slack and Microsoft Teams, connects to thousands of tools, and does real work for real companies: finance, marketing, ops, engineering. We're building the product that replaces half the SaaS stack with a single teammate.</p><p>
The team is small. The scope is not.</p><p></p><h2 class="jobSectionHeader"><b>
The Role</b></h2><p>
Here's what building Viktor is like: someone in Slack asks Viktor to reconcile their Stripe payouts against their books. Viktor does it, live, in under a minute. The customer tells their network. Two more teams sign up that week.</p><p>
Your job is to make Viktor do more of those things, for more customers, more reliably. That's the job. Build the agent everyone else will try to copy.</p><p>
Remote means you're not in the room - but you're not on the sidelines either. You'll work directly with both founders, own a real surface of the product, and see your code in production the same day you write it. We default to async, document decisions in writing, and fly the team together a few times a year.</p><p></p><h2 class="jobSectionHeader"><b>
What You'll Do</b></h2><ul><li><p><b>
Build the agent runtime.</b> Sandboxed execution, tool orchestration, memory. The part of Viktor that turns a sentence in Slack into a real action against a real API.</p></li><li><p><b>
Ship integrations. </b>We connect to thousands of tools. Salesforce, Notion, Stripe, QuickBooks, HubSpot, Shopify, whatever customers ask for next. OAuth, webhooks, schema mapping, error handling. Each new integration unlocks a new shape of customer.</p></li><li><p><b>
Run the infrastructure.</b> Viktor handles 600K+ tool calls a day. Container orchestration, autoscaling, cost per task. You're the reason it stays fast and cheap.</p></li><li><p><b>
Ship product.</b> Features that go directly to users through Slack and Teams. You'll see people using what you built within hours.</p></li><li><p><b>
Whatever needs building.</b> Small team, large surface. You'll work on things that aren't in this document.</p></li></ul><p></p><h2 class="jobSectionHeader"><b>
How You'll Know You're Succeeding</b></h2><p>
You're shipping to production every day, and the changelog has your name on it.</p><p>
A feature you built is the reason a customer closed.</p><p>
When Viktor breaks at 3am, you can fix it because you understand the system end to end.</p><p>
Founders are writing less code because you've taken over surfaces they used to own.</p><p></p><h2 class="jobSectionHeader"><b>
What We're Looking For</b></h2><ul><li><p><b>
Agentic coding.</b> You're fully bought into AI-assisted development. Agents, parallelized workflows, whatever tools make you fastest. If that isn't already how you work, you'll be behind on day one.</p></li><li><p><b>
Systems thinking.</b> You make hard technical trade-offs and own them. You understand how things break at scale and design for it. Good judgment about what's worth doing well and what's worth doing fast.</p></li><li><p><b>
Speed, with the bar up.</b> You ship today, not Thursday. No enterprise engineering. No three-week review cycles.</p></li><li><p><b>
Range. </b>You can go from the agent runtime to a React component to a deployment script in an afternoon. Viktor's surface area is too big for specialists.</p></li><li><p><b>
Genuine interest in how AI actually works.</b> You've read papers. You've read other people's prompts. You have opinions about how evals should work.</p></li><li><p><b>
Remote. </b>You can work from the location of your choice.</p></li></ul><p></p><h2 class="jobSectionHeader"><b>
Bonus</b></h2><ul><li><p>
Previous AI engineering experience: agents, harnesses, deep model understanding.</p></li><li><p>
Previous founder or early-stage builder. You've worn every hat and liked it.</p></li><li><p>
Open source contributions to the AI tooling we live in.</p></li></ul><p></p><h2 class="jobSectionHeader"><b>
Tech</b></h2><p>
TypeScript/React on the frontend. Python on the backend and agents. Modal for infrastructure. You don't need to know all of it coming in. You need to learn fast.</p><p></p><h2 class="jobSectionHeader"><b>
How we work</b></h2><p></p><p>
Small team, high trust, low process. Decisions are made by owners, not committees. You will ship your first week. You will talk to users your first day. We don't do alignment meetings or stakeholder syncs. We build things, see if they work, and iterate.</p><p>
Everyone here owns something real. Not a task. A surface of the company that customers depend on. When it breaks, you fix it. When it wins, everyone knows whose work it was.</p><p>
We use Viktor to build Viktor. You'll see what you're working on in action every day.</p><p></p><h2 class="jobSectionHeader"><b>
Why Viktor</b></h2><p></p><p>
This is a rare window. The product works. The market is pulling. The team is small enough that what you do next week will be live in production next week. That doesn't last forever. Right now, it's still true.</p><p></p><h2 class="jobSectionHeader"><b>
Compensation</b></h2><p></p><p>
Competitive salary, meaningful equity, and the kind of ownership that only exists at this stage.</p><p>
We're in Munich, New York, and Warsaw. Onsite preferred. The best work happens when you're in the room.</p></div><p></p>

Software Engineer (Remote)

SultanaExpress

<p>AI-Augmented Multi-Platform Software Engineer (iOS <b>Android </b>Next.js)</p><p><b>Company Name:</b> SultanaExpress<br/><b>Location:</b> Remote / Istanbul<br/><b>Job Type:</b> Full-time/part time<br/><b>Salary:</b> Competitive Salary</p><p>About the Role</p><p>We are looking for a <b>Senior AI-Augmented Multi-Platform Software Engineer</b> to join our growing team. In this role, you will not just write code &mdash; you will <b>orchestrate multiple AI coding agents</b> to dramatically accelerate development across native iOS, Android, web, and backend systems.</p><p>You will lead the creation and maintenance of high-quality applications while leveraging AI tools and agent workflows to deliver features faster, with higher quality, and cleaner architecture. If you love directing teams of AI agents like a conductor, while still maintaining strong hands-on coding skills across multiple platforms, this is the role for you.</p><p>Key Responsibilities</p><ul><li>Design, develop, and maintain production-grade applications for <b>iOS (Swift)</b>, <b>Android (Kotlin)</b>, <b>Web (Next.js)</b>, and <b>PostgreSQL</b> databases.</li><li><b>Orchestrate multiple AI coding agents</b> (e.g., using Cursor, Claude, GPT-based agents, or custom agent frameworks) to generate, review, refactor, and test code across different tech stacks.</li><li>Architect and implement end-to-end features that work seamlessly across mobile and web platforms.</li><li>Optimize database schemas and queries in PostgreSQL for performance and scalability.</li><li>Ensure high code quality through AI-assisted reviews, automated testing, and manual oversight.</li><li>Collaborate with product, design, and other engineering team members to translate requirements into robust solutions.</li><li>Continuously improve our AI-augmented development workflow and agent orchestration processes.</li><li>Debug complex issues across platforms and maintain high reliability in production environments.</li></ul><p>Required Qualifications</p><ul><li>Professional software engineering experience.</li><li>Strong expertise in <b>at least two</b> of the following:</li><li>Native iOS development with <b>Swift</b></li><li>Native Android development with <b>Kotlin</b></li><li>Modern web development with <b>Next.js</b> (TypeScript, React, Tailwind, etc.)</li><li>Solid experience with <b>PostgreSQL</b> (schema design, performance tuning, migrations).</li><li>Proven ability to <b>run and orchestrate multiple AI coding agents</b> to boost productivity (experience with tools like Cursor, Windsurf, Claude Projects, or custom multi-agent setups is a big plus).</li><li>Strong understanding of clean architecture, state management, API integration, and cross-platform consistency.</li><li>Experience shipping and maintaining production mobile and web applications.</li></ul><p>Preferred Skills</p><ul><li>Experience building or improving AI agent orchestration workflows.</li><li>Familiarity with CI/CD pipelines, testing frameworks (XCTest, Espresso, Jest), and mobile deployment processes (App Store, Google Play).</li><li>Knowledge of modern DevOps practices and cloud platforms (AWS, Vercel, etc.).</li><li>Passion for AI tools and a track record of using them to 2-5x development speed.</li></ul><p>What We Offer</p><ul><li>Competitive salary and equity package.</li><li>Flexible work environment (remote/hybrid options).</li><li>Opportunity to work at the forefront of <b>AI-augmented software engineering</b>.</li><li>Latest AI tools and hardware provided.</li><li>Collaborative, high-growth team environment.</li></ul><p>If you are a strong engineer who thrives on directing AI agents to handle heavy lifting while you focus on architecture, quality, and innovation, we want to hear from you!<br/>Send your resume :<br/>hr@sultana.express</p><p>İş T&uuml;r&uuml;: Tam zamanlı, Yarı zamanlı</p><p>Beklenen &ccedil;alışma saatleri: Haftada en az 45</p><p>Work Location: İş yeri</p>

AI Augmented FullStack & Mobile Engineer Software Engineer

Optimum7

<div><p><b>AI Systems Engineer/Developer (Claude-First)</b></p>
<p><b>
Location:</b> Remote, TR</p><p></p><p><br>
Optimum7 is a performance-driven B2B eCommerce growth agency. We engineer outcomes for industrial B2B and SaaS brands that want to scale smarter and faster through custom development and creative marketing strategies.</p>
<p>
We&rsquo;re looking for a fast, AI-native <b>AI Systems Engineer / Developer who builds with AI at the core and ships fast.</b></p>
<p>
If you think in systems, build with AI at the core (Claude, ChatGPT), and care about speed, output, and real-world impact, this role is for you.</p><p></p><p><b><br>
What You&rsquo;ll Do</b></p>
<ul>
<li>Design and develop scalable, high-performance backend systems and microservices architectures.</li>
<li>Build and maintain RESTful APIs and GraphQL endpoints for seamless integrations.</li>
<li>Turn ideas into working systems quickly, from concept to production.</li>
<li>Integrate LLMs (Claude, OpenAI) and AI/ML-powered features into real-world applications.</li>
<li>Build AI-driven workflows, agents, and automations to replace manual processes.</li>
<li>Design and optimize database structures (MySQL, PostgreSQL, Redis) and system performance.</li>
<li>Implement caching strategies (Redis, Memcached) and ensure scalability and reliability.</li>
<li>Integrate third-party services and platforms using modern API standards.</li>
<li>Work with cloud infrastructure, containerized environments (Docker, Kubernetes), and CI/CD pipelines.</li>
<li>Troubleshoot and resolve complex system issues with a focus on uptime and performance.</li>
<li>Implement security best practices (OAuth 2.0, JWT, encryption, OWASP standards).</li>
<li>Continuously ship, test, and improve systems in a fast-paced, agile environment.</li>
<li>Collaborate with cross-functional teams while contributing to technical decisions and architecture.</li>
<li>Stay current with emerging technologies and apply them to improve speed and system capability.</li></ul><p><b><br>
</b></p><p><b>What You Bring</b></p>
<ul>
<li>Hands-on experience using AI tools (Claude, ChatGPT, etc.) in real development workflows</li>
<li>Use AI (Claude, ChatGPT, etc.) as your primary development interface</li>
<li>Can take an idea from concept  working system quickly</li>
<li>Think in automation, agents, and scalable architecture</li>
<li>Care about output and speed, not process</li>
<li>Operate with speed as a standard, delivering prototypes in hours, features in days, and systems in weeks, not weeks for features or months for systems.</li></ul><p><b><br>
</b></p><p><b>AI-First Requirement (Non-Negotiable)</b></p>
<p>
 You must already:</p>
<ul>
<li>use Claude Code daily for coding, debugging, and system design</li>
<li>rely on AI to accelerate development and decision-making</li>
</ul>
<p> If AI is not central to your workflow, this role is not a fit for you.</p><p><b><br>
</b></p><p><b>What We Value at Optimum7</b></p>
<ul>
<li>Commitment to Excellence: Precision, efficiency, and delivering top-tier work.</li>
<li>Problem-Solving Orientation: We don&rsquo;t stop at &ldquo;no&rdquo;; we find solutions.</li>
<li>Innovative Mindset: Always thinking bigger and smarter to drive growth.</li>
<li>Team-Centric Attitude: &ldquo;Zero drama&rdquo; culture built on collaboration and trust.</li>
<li>Growth Minded: Continuous learning, feedback, and improvement.</li>
<li>Purpose-Driven: We empower eCommerce and B2B brands to scale through innovation.</li></ul><br>
<p></p>
<p><b>
Why Join Optimum7</b></p>
<ul>
<li>100% remote role</li>
<li>Competitive base salary paid in USD</li>
<li>Growth opportunities within a rapidly expanding company.</li>
<li>Access to an AI-powered tech stack</li>
<li>A culture built on excellence, integrity, and innovation.</li></ul><br>
<p></p>
<p><b>
Ready to Grow with Us?</b></p>
<p><b><i>
If you want to operate at the edge of AI-driven systems, move fast, and build real impact, this is your environment.</i></b></p>
<p><b><i>
Apply with more than just your resume, including GitHub or code samples, examples of AI-driven systems, features, or automations you&rsquo;ve built, the tools used (e.g., Claude, OpenAI), and optionally a Loom walkthrough of your workflow.</i></b></p><p></p><p><b><br>
Learn more:</b></p><p><br>
<br>
www.optimum7.com</p>
<p>
 Follow us on LinkedIn: Optimum7</p></div>

AI Systems Engineer/Developer (Claude-First)

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>Back-End Developers</b><b> </b>to join our team of talented and inspiring developers in a fast-paced environment.</p>
<p>
As a <b>Back-End Developer</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 Back-End Developer, 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>3+ 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 (proximity to central Istanbul is a plus for potential on-site meetings).</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>

Back-End Developer

Explore 34+ Backend engineer in Istanbul this May. Find roles across top companies and apply now to boost your career.

34 backend engineer jobs In Istanbul

Senior Software Engineer (Java)

Senior Software Engineer (Java)

Senior Software Engineer (.Net)

Software Engineer (Remote)

AI Augmented FullStack & Mobile Engineer Software Engineer

AI Systems Engineer/Developer (Claude-First)

Back-End Developer