backend developer

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junior software engineer Jobs in Istanbul

junior software engineer

frontend developer

node.js developer

K2K Software Development

<div>
 <p>
  Company Overview:
 </p>
 <p>
  Join our innovative team at K2K Development, where we develop cutting-edge web applications that are featured in the Forbes Top 50 with our Partners. We are dedicated to transforming the digital landscape and are looking for a talented Backend Web Developer to help lead our data integrations and contribute to our success.
 </p>
 <p>
  <br/>
 </p>
 <p>
  Responsibilities:
 </p>
 <ul>
  <li>
   Develop High-Quality Applications: Craft sophisticated web applications that meet comprehensive business requirements from concept to deployment.
  </li>
  <li>
   Full-Spectrum Web Development: Engage in all stages of web development, from UI/UX design to developing high-performance API endpoints.
  </li>
  <li>
   Project Leadership: Take full ownership of backend development projects, ensuring efficient and timely execution.
  </li>
  <li>
   Collaborative Teamwork: Work closely with Product Managers and Senior Developers to align development with company vision and customer needs.
  </li>
  <li>
   Innovative Problem-Solving: Utilize analytical and innovative thinking to overcome challenges and deliver solutions.
  </li>
  <li>
   Continuous Improvement: Actively participate in code reviews, optimize backend processes, and maintain high coding standards.
  </li>
  <li>
   Data/API Integration Leadership: Lead the integration of complex data sources into a Forbes Top 50 featured product, enhancing functionality and user experience.
  </li>
 </ul>
 <p>
  <br/>
 </p>
 <p>
  Basic Qualifications:
 </p>
 <ul>
  <li>
   Bachelor&rsquo;s degree in Computer Science, Engineering, or related field, or equivalent practical experience.
  </li>
  <li>
   Minimum 1 year of professional experience in backend development using Node.js and TypeScript.
  </li>
  <li>
   Demonstrated ability to write clean, well-structured, and efficient code.
  </li>
  <li>
   Proficiency with tools such as, GitHub, Trello and Linear for version control and project management.
  </li>
 </ul>
 <p>
  <br/>
 </p>
 <p>
  Preferred Qualifications:
 </p>
 <ul>
  <li>
   2+ years of experience in backend development, particularly with Node.js and TypeScript.
  </li>
  <li>
   Experience with Docker, Docker Compose, and API integration in a plugin-structured system.
  </li>
  <li>
   Familiarity with RESTful and SOAP APIs, Webhooks, and modern authentication mechanisms.
  </li>
  <li>
   Practical knowledge of CI/CD pipelines, containerization, and server maintenance.
  </li>
  <li>
   Strong command of English, capable of high-level technical research and documentation.
  </li>
 </ul>
 <p>
  <br/>
 </p>
 <p>
  What We Offer:
 </p>
 <ul>
  <li>
   A dynamic, fast-paced work environment with a diverse and passionate team.
  </li>
  <li>
   Opportunities for professional growth and development.
  </li>
  <li>
   Competitive salary and benefits package.
  </li>
  <li>
   Flexible working hours and hybrid work options.
  </li>
 </ul>
 <p>
  <br/>
 </p>
</div>


Back End Developer

Qlub

<div><p><b>Who are we?</b><br>
Qlub is revolutionizing the dining experience with ultra-fast, seamless payment solutions. Our technology enables customers to pay in seconds by scanning a QR code &ndash; no app download required. From Pay-at-Table QR payments and Digital Menus to Order-and-Pay tech, Payment Links, and SoftPOS terminals, Qlub streamlines the entire payment process, making it faster and more convenient for both diners and restaurants. Plus, splitting the bill with friends has never been easier!</p><p>
We help restaurants focus on what they do best: providing exceptional dining experiences. By removing payment hassles, we increase table turnover and improve operational efficiency, boosting profits. Features like analytics, instant tipping and reviews, and automated accounting empower restaurants to thrive in today&rsquo;s digital-first world.</p><p></p><p><b><br>
The Role</b><br>
We're looking for a <b>Backend Developer </b>to support the development of panel platforms.</p><p>
You'll work on payment integrations, dashboards, order flows, table management, review systems, and more. Your work will directly impact the experience of both diners and restaurant staff.</p><p><b>
You&rsquo;ll be responsible for:</b></p><ul>
<li>Developing backend services and APIs</li>
<li>Collaborating with frontend, design, and product teams</li>
<li>Writing clean, efficient, well-documented code</li>
<li>Participating in code reviews</li>
<li>Troubleshooting, debugging, and improving system performance</li>
<li>Managing notification and email systems</li><br>
</ul><p></p><br>
<p><b>We're looking for someone with:</b></p><ul>
<li>3&ndash;5 years of backend development experience</li>
<li>Solid TypeScript and Node.js knowledge</li>
<li>Experience with NestJS or similar frameworks (Express, Fastify)</li>
<li>Experience working with PostgreSQL</li>
<li>Working knowledge of Redis</li>
<li>Understanding of RESTful API best practices</li>
<li>Exposure to CI/CD workflows</li>
<li>Awareness of security, rate-limiting, and performance optimization</li>
Basic understanding of job/message queues (e.g., BullMQ)<br>
<li>
</li></ul><p><b>Why join qlub?</b></p><ul>
<li>Be part of an exciting, fast-paced environment, where you can grow the business from an early-stage start-up into a global organization;</li>
<li>Drive growth and tailoring of fast-evolving new products and features;</li>
<li>Work with highly motivated people, enthusiastic about improving the customer experience at table-service restaurants.</li><br>
</ul><p></p><br>
<p>Sounds like you? Are you excited by this opportunity? If so, <b>&ldquo;Apply now&rdquo;</b>.</p></div>

Backend Developer

Trendyol Group

<div>
 <p>
  <strong>
   ABOUT THE TEAM
  </strong>
 </p>
 <p>
  We&rsquo;re shaping the future of financial technology at Trendyol.
 </p>
 <p>
  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.
 </p>
 <p>
  With Trendyol Pay, we enable fast, secure, and seamless payment journeys. Through Trendyol Finance, we develop inclusive and accessible products that simplify financial decisions.
 </p>
 <p>
  <br/>
 </p>
 <p>
  <strong>
   ABOUT THE ROLE
  </strong>
 </p>
 <p>
  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.
 </p>
 <p>
  <br/>
 </p>
 <p>
  <strong>
   Expected Qualifications
  </strong>
 </p>
 <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>
 <p>
  <br/>
 </p>
 <p>
  <strong>
   What We Offer
  </strong>
 </p>
 <p>
  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.
 </p>
 <p>
  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.
 </p>
 <p>
  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.
 </p>
 <p>
  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.
 </p>
 <p>
  Responsibility from day one &mdash; Take full ownership from the start in a culture where every voice is heard and valued.
 </p>
 <p>
  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.
 </p>
 <p>
  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.
 </p>
 <p>
  Meaningful connections beyond tasks &mdash; Be part of team rituals, events, and social activities that help us stay connected and inspired.
 </p>
 <p>
  <br/>
 </p>
 <p>
  <br/>
 </p>
 <p>
  <strong>
   Take the Next Step
  </strong>
 </p>
 <p>
  If this role excites you, apply now and let&rsquo;s take the next step together.
 </p>
 <p>
  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.
 </p>
</div>


Fusion Growth Partners

<div><div><div><p><b>Senior Full Stack Developer</b></p></div><div><p><b><br>
Location:</b> Remote<br>
<b>Employment Type:</b> Full-Time</p></div><div><p><b><i>
To Apply &ndash; YOU MUST FOLLOW PROCESS AT BOTTOW OF AD</i></b></p></div><div><p><b><br>
About Fusion Growth Partners</b></p></div><div><p><br>
Fusion Growth Partners is a growth accelerator for real estate professionals. We provide high-performing agents with a full backend operational systems, including traditional marketing, digital marketing, coaching, and structured business planning to help them grow and scale their business.</p></div><div><p><b><br>
Position Overview</b></p></div><div><p><br>
We are seeking a <b>Senior Full Stack Developer</b> to lead the design, development, and optimization of internal and external software solutions that power Fusion&rsquo;s operations and marketing automation systems. This individual will manage and collaborate with a team of both internal and contract developers, and report directly to the COO.</p></div><div><p><b><br>
Key Responsibilities</b></p></div><div><ul><li><div><br>
Lead the architecture, development, and deployment of full-stack applications used by internal teams and clients.</div></li></ul></div><div><ul><li><div><br>
Oversee development across platforms including Zoho Creator, Zoho CRM, Vibe Coding tools (Cursor, Replit etc), and agentic automation frameworks (N8N, LangChain, AutoGen, CrewAI).</div></li></ul></div><div><ul><li><div><br>
Translate business needs from leadership into technical specifications and efficient product builds.</div></li></ul></div><div><ul><li><div><br>
Maintain clean, scalable, well-documented code across front-end and back-end systems.</div></li></ul></div><div><ul><li><div><br>
Establish best practices and development standards for a small, cross-functional team.</div></li></ul></div><div><ul><li><div><br>
Collaborate closely with the COO to align development priorities with company strategy.</div></li></ul></div><div><ul><li><div><br>
Integrate third-party APIs and tools where necessary and ensure data consistency and security.</div></li></ul></div><div><p><b><br>
Qualifications</b></p></div><div><ul><li><div><br>
8+ years of professional software development experience, with strong full-stack capabilities.</div></li></ul></div><div><ul><li><div><br>
Deep proficiency in both front-end (e.g., React, Vue, HTML/CSS/JS) and back-end technologies (e.g., Node.js, Python, or equivalent).</div></li></ul></div><div><ul><li><div><br>
Proven leadership experience, including management of developers or engineering teams.</div></li></ul></div><div><ul><li><div><br>
Experience building or integrating with marketing automation systems or CRMs (Zoho strongly preferred).</div></li></ul></div></div><div><div><ul><li><div><br>
Strong understanding of data flow, permissions, and user experience in SaaS environments.</div></li></ul></div><div><ul><li><div><br>
Experience working with low-code/no-code platforms (e.g., Zoho Creator, N8N)</div></li></ul></div><div><ul><li><div><br>
Familiarity with real estate technology or marketing platforms is a plus.</div></li></ul></div><div><ul><li><div><br>
Excellent organizational and communication skills; detail-oriented and highly accountable.</div></li></ul></div><div><ul><li><div><br>
Comfortable in a full-time remote environment with direct alignment to executive leadership.</div></li></ul></div><div><p><b><br>
Note:</b> This is a full-time role. Applicants must be fully dedicated to Fusion Growth Partners and not concurrently engaged in other freelance, part-time, or consulting work. Core working hours are based on <b>Pacific Time (PT)</b>, and candidates must be consistently available and online during these hours. <b>We are open to offshore candidates.</b></p></div><div><p><b><br>
What We Offer:</b></p></div><div><ul><li><div><br>
Competitive Salary</div></li></ul></div><div><ul><li><div><br>
Opportunities for Growth</div></li></ul></div><div><ul><li><div><br>
Bonus and Profit Share possibilities</div></li></ul></div><div><p><b><br>
Next Steps:</b> To be considered you must fill out our pre-interview from. If you do not fill out the form, we will not contact you. Everyone who does take the time to completer the form will be contacted.</p></div><div><p><b><br>
Please fill out the attached form in as much detail as possible</b>. We would like to find out more about you in detail with specific information related to job requirements so that we efficient in our process for all concerned. https://zfrmz.com/gItmvMxsOUJf8bp3Euq7</p></div><div><p><br>
For more information about Fusion Growth Partners, visit us at www.growwithfusion.com.</p></div></div></div><div></div>

Full Stack Developer

Seven Apps

<div><p><b>Key Responsibilities:</b></p><ul>
<li>Build and enhance internal tools using Retool, Airtable, n8n, Strapi, and Firebase,</li>
<li>Automate workflows and processes using Python and Node.js, with exposure to AWS Lambda and other serverless solutions,</li>
<li>Collaborate with the backend team to integrate and optimize internal systems,</li>
<li>Document and share learnings through &quot;how-to&quot; guides, and test/improve tools based on team feedback,</li>
<li>Research and prototype new automation frameworks, exploring emerging technologies.</li>
</ul><p><b>Requirements</b></p><ul>
<li>Currently pursuing or recently graduated in Computer Science, Software Engineering, or a related field,</li>
<li>No prior professional experience required: personal, academic, internship, open-source projects, or other job experience all count, while prior industry experience is a plus,</li>
<li>Familiarity with Python or Node.js, and exposure to internal tool platforms such as Retool, Airtable, n8n, Strapi. Experience with Next.js or backend frameworks like Python FastAPI is a plus,</li>
<li>Experience with AWS Lambda and cloud based automation is a plus but not required,</li>
<li>Strong problem-solving mindset, effective communication, curiosity, and comfort asking questions,</li>
<li>Fluency in English, both verbal and written,</li>
<li>Ability to work on-site for five days during the summer break, and at least three days during the academic year,</li>
<li><b>Hustler at heart -&gt; You take full ownership of your processes and consistently deliver outstanding results.</b></li>
</ul><p><b>Benefits</b></p><ul>
<li>&#10024; Work from Istanbul&rsquo;s most vibrant office &mdash; Kolektif Levent</li>
 <li>Daily meal allowance + transportation support</li>
<li><ul><li>Unlimited coffee, tea, and all the snacks your brain needs</li></ul></li></ul></div>

Automation Engineer Intern

Pegasus Airlines

<div>
 <p>
  <strong>
   We are Pegasus Airlines!
  </strong>
 </p>
 <p>
  <br/>
 </p>
 <p>
  We are Pegasus. We represent the new generation in Turkish aviation. With our motto: Everyone has the right to fly, we inspire our guests to travel with low fares thanks to our business model.
 </p>
 <p>
  <br/>
 </p>
 <p>
  As your digital airline, our guest-centric approach offers digital technologies and unique innovations that enhance the travel experience.
 </p>
 <p>
  Today, we operate connecting flights to more than 50 countries across T&uuml;rkiye, Europe, North Africa, the Middle East, Russia, and Central Asia. We have one of the youngest fleets in Turkey, which exceeds 110 aircraft in 2025.
 </p>
 <p>
  <br/>
 </p>
 <p>
  Are you ready to embark on your Pegasus career path as our
  <strong>
   Web Developer
  </strong>
  , flight number PC-2025?
 </p>
 <p>
  <br/>
 </p>
 <p>
  <strong>
   Requirements:
  </strong>
  &ZeroWidthSpace;
 </p>
 <p>
  <br/>
 </p>
 <ul>
  <li>
   Education: MS/BS in Computer Science/Engineering or a similar field&ZeroWidthSpace;.
  </li>
  <li>
   Team Player: Lifelong learner with a customer-first mindset and an innovative approach.
  </li>
  <li>
   Experience: 2-4 years of experience in web development.
  </li>
  <li>
   Tangible Skills: Experience with Typescript, ReactJS, Node.js, JavaScript, HTML, CSS
  </li>
  <li>
   CI/CD Experience: Knowledge of Continuous Delivery, Continuous Integration, and version control (Git).
  </li>
  <li>
   Agile Mindset: Agile-minded team player with strong communication skills.
  </li>
  <li>
   Integration &amp; Frameworks: Knowledge of integrating APIs, third-party libraries, and frameworks.
  </li>
  <li>
   Preferred: An interest in cross-platform frameworks, microservices architecture, distributed systems, cloud-based solutions, and AI-powered tools for coding.
  </li>
 </ul>
 <p>
  <br/>
 </p>
 <p>
  <br/>
 </p>
 <p>
  <strong>
   In this role, you will
  </strong>
 </p>
 <p>
  <br/>
 </p>
 <p>
  <br/>
 </p>
 <ul>
  <li>
   Innovate &amp; Enhance: Write clean, maintainable, and efficient code under the guidance of senior developers and be enthusiastic about improving your professional skills.
  </li>
  <li>
   Learn &amp; Grow: Continuously expand your skills with the latest technologies.
  </li>
  <li>
   Collaborate &amp; Deliver: Collaborate with team members to build high-quality solutions while participating in agile processes.
  </li>
 </ul>
 <p>
  <br/>
 </p>
 <p>
  <br/>
 </p>
 <p>
  <strong>
   What Pegasus Airlines can offer you
  </strong>
 </p>
 <p>
  <br/>
 </p>
 <ul>
  <li>
   Discounted domestic and international flight tickets that include first-degree family members, For a single candidate can add +1 person, Discounted flight with contracted airlines to destinations where there are no flights
  </li>
  <li>
   Private health insurance
  </li>
  <li>
   Food voucher
  </li>
  <li>
   Remote and flexible working hours on certain days according to a working model, allowance for remote working days
  </li>
  <li>
   Fun@Fly Social Activity Clubs (Social clubs such as theatre club, sailing, trekking, running, basketball, volleyball and football teams, e-sports team)
  </li>
  <li>
   Kindergarten opportunity for female employees (Istanbul, Izmir, Antalya)
  </li>
  <li>
   Performance-based bonus system
  </li>
  <li>
   Shuttle
  </li>
 </ul>
 <p>
  <br/>
 </p>
 <p>
  <strong>
   Discover Pegasus Airlines!
  </strong>
 </p>
 <p>
  <br/>
 </p>
 <p>
  Our Framework for a Sustainable Future prioritizes our impact on the environment and society, as well as economic development. We call our route
  <strong>
   <u>
    Sustainable Future
   </u>
  </strong>
  . By 2050, we aim to eliminate carbon emissions from our operations, and we are working towards this goal. We are proud of a rich governance culture that is developed through a perspective open to continuous improvement and the feedback of our stakeholders. We regularly and transparently share our targets and performance on these issues with the public.
 </p>
 <p>
  Gender equality is at the foundation of our corporate culture. We are one of the pioneering airlines that have signed IATA's voluntary initiative "25by2025" to increase the representation of women in all areas of the aviation industry, including pilot, technician, and management ranks. We were the first airline in the world to join the UN Women's Empowerment Principles (WEPs) platform.
 </p>
 <p>
  Listen to every different voice in our quest for a more equal tomorrow for future generations and we call our voice #PegasusHarmony 💛
 </p>
</div>


Web Developer - Hybrid

Monitize AI

<p></p><div><ul><li>Lead <b>backend architecture &amp; design</b> for our web app and data pipelines.
</li><li>Build scalable APIs and services for handling <b>large-scale video &amp; metadata</b>.
</li><li>Design and optimize <b>databases</b> (SQL/NoSQL, distributed storage) for high throughput.
</li><li>Collaborate with AI/ML engineers to integrate computer vision pipelines into production.
</li><li>Work with blockchain developers to support <b>token, wallet, and reward integrations</b>.
</li><li>Own DevOps (cloud infra, CI/CD, monitoring) to ensure system reliability.
</li><li>Mentor junior engineers and establish engineering best practices.
</li><li>Shape the technical roadmap and make <b>key architectural decisions</b>.</li>
</ul><p><b>Requirements</b></p><p></p><ul>
<li>5+ years of backend engineering experience with <b>production system ownership</b>.
</li><li>Strong expertise in <b>Python or Node.js</b> (bonus: both).
</li><li>Deep knowledge of <b>databases</b> (Postgres, MongoDB, or equivalents) and experience with <b>large-scale data management</b>.
</li><li>Familiarity with <b>data-heavy applications</b> (video pipelines, ML datasets, or real-time systems).
</li><li>Comfortable with <b>cloud infra</b> (AWS/GCP), containers (Docker/K8s), and CI/CD pipelines.
</li><li>Understanding of <b>AI/ML workflows</b> (model training, inference, data preprocessing).
</li><li>Strong interest in <b>crypto</b> (tokens, smart contracts, wallets) and <b>computer vision</b> &mdash; willing to learn fast.
</li><li>Problem-solving mindset with leadership ambition.</li></ul></div>

Senior Backend Engineer

Explore 60+ Node.js developer in Istanbul this September. Find roles across top companies and apply now to boost your career.

60 node.js developer jobs IN Istanbul

Back End Developer

Backend Developer

Backend Developer

Full Stack Developer

Automation Engineer Intern

Web Developer - Hybrid

Senior Backend Engineer