Java Jobs in Istanbul.
All active Java roles based in Istanbul.
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Level Up Your Career with Zynga!
At Zynga, we bring people together through the power of play. As a global leader in interactive entertainment and a proud label of Take-Two Interactive, our games have been downloaded over 6 billion times—connecting players in 175+ countries through fun, strategy, and a little friendly competition.
From thrilling casino spins to epic strategy battles, mind-bending puzzles, and social word challenges, our diverse game portfolio has something for everyone. Fan-favorites and latest hits include FarmVille™, Words With Friends™, Zynga Poker™, Game of Thrones Slots Casino™, Wizard of Oz Slots™, Hit it Rich! Slots™, Wonka Slots™, Top Eleven™, Toon Blast™, Empires & Puzzles™, Merge Dragons!™, CSR Racing™, Harry Potter: Puzzles & Spells™, Match Factory™, and Color Block Jam™—plus many more!
Founded in 2007 and headquartered in California, our teams span North America, Europe, and Asia, working together to craft unforgettable gaming experiences. Whether you're spinning, strategizing, matching, or competing, Zynga is where fun meets innovation—and where you can take your career to the next level.
Join us and be part of the play!
What is waiting for you?
At Zynga Turkey, we are proud to be the studio behind some of the most popular titles in our Plus portfolio, including 101 Okey Plus, Gin Rummy Plus, Spades Plus, and Backgammon Plus. These games have been enjoyed by tens of millions of players around the world and continue to shape the social gaming experience.
We are now looking for an experienced Software Engineer to join our team and directly contribute to the continued success and stability of these beloved titles. In this role, you will have the chance to impact games that millions of players love and play every day, while being part of Zynga’s strong engineering culture.
What You’ll Do?
- Design, develop and maintain backend services to ensure games remain stable and highly available
- Monitor system health and performance using modern observability tools, proactively identifying and resolving issues before they impact players
- Research, architect, and deliver backend solutions that continuously improve stability, efficiency, and scalability
What You Need?
- BS/MS degree in Computer Science or a related field
- 3+ years of hands-on development experience with Java and Spring Boot
- Solid understanding of Algorithms, Data Structures, and OOP principles
- Experience with relational and in-memory database systems
We are proud to be an equal opportunity employer, which means we are committed to creating and celebrating diverse thoughts, cultures, and backgrounds throughout our organization. Employment with us is based on substantive ability, objective qualifications, and work ethic – not an individual’s race, creed, color, religion, sex or gender, gender identity or expression, sexual orientation, national origin or ancestry, alienage or citizenship status, physical or mental disability, pregnancy, age, genetic information, veteran status, marital status, status as a victim of domestic violence or sex offenses, reproductive health decision, or any other characteristics protected by applicable law.
As an equal opportunity employer, we are committed to providing the necessary support and accommodation to qualified individuals with disabilities, health conditions, or impairments (subject to any local qualifying requirements) to ensure their full participation in the job application or interview process. Please contact us at accommodationrequest@zynga.com to request any accommodations or for support related to your application for an open position.
Please be aware that Zynga does not conduct job interviews or make job offers over third-party messaging apps such as Telegram, WhatsApp, or others. Zynga also does not engage in any financial exchanges during the recruitment or onboarding process, and will never ask a candidate for their personal or financial information over an app or other unofficial chat channel. Any attempt to do so may be the result of a scamp or phishing attack, and you should not engage. Zynga’s in-house recruitment team will only contact individuals through their official Company email addresses (i.e., via a zynga.com, take2games.com, naturalmotion.com, smallgiantgames.com, themavens.com, gram.gs email domain).
Ready to apply?
Apply to Zynga
Trade Operations Engineer
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DeepFin is a systematic proprietary trading firm combining deep learning, traditional quantitative research methods, and cutting-edge trading technology, to trade global markets. Founded by engineers and researchers, we build and deploy advanced trading systems that operate across global markets.
Our team is lean, highly technical, and impact-driven - every hire plays a direct role in shaping the firm’s technology, strategy, and performance. We value curiosity, precision, and collaboration, and we’re building an environment where exceptional people can do their best work at the intersection of AI and financial markets.
We are looking for a Trade Operations Engineer to take ownership of our risk, middle-office, and back-office systems. This role sits at the intersection of trading, engineering, and operations, and is critical to the reliability and scalability of the firm.
You will work closely with quantitative researchers, traders, and infrastructure, building and maintaining the systems that ensure trades are correctly captured, reconciled, and monitored in real time.
The role is hands-on and end-to-end. You will be responsible for designing, building, and operating full-stack applications that support trade reconciliation, risk monitoring, and operational workflows across both AWS and bare-metal environments.
What You’ll Be Doing
- Designing and building full-stack applications for risk monitoring and middle/back-office workflows using Java and React
- Owning trade reconciliation pipelines, ensuring accuracy and consistency across multiple systems and venues
- Developing operational tooling and monitoring to support live trading and post-trade processes
- Working closely with infrastructure to support systems running across AWS and colocated bare-metal servers
- Troubleshooting and maintaining trading applications, primarily in Java, with some interaction with C++ components
- Investigating and resolving live production issues related to trade flow, clearing, and risk limits
- Improving system reliability, observability, and operational efficiency over time
What You Need
Finance Experience: You have prior professional experience as a software engineer within the finance industry. Experience in HFT, proprietary trading, or systematic trading environments is a strong advantage.
Technical Stack: Strong full-stack engineering experience, with Java on the back-end and React on the front-end. You are comfortable owning both application logic and user-facing components.
Domain Knowledge: You understand post-trade workflows and operational processes, including trade reconciliation, clearing, and real-time risk monitoring. You are comfortable working with trade lifecycle data and debugging inconsistencies.
Systems Environment: You are comfortable working in Linux environments and collaborating with infrastructure teams. Experience working across cloud (AWS) and bare-metal or colocated environments is beneficial.
C++ Familiarity: You do not need to build low-latency systems in C++, but you should be comfortable reading, debugging, and making targeted changes in existing C++ codebases.
Ownership & Mindset: You take ownership of systems end-to-end, from development through to production support. You are pragmatic, detail-oriented, and comfortable working in a fast-paced trading environment where systems must be reliable under pressure.
If you’re passionate about applying advanced technology to real-world markets and want to work alongside a focused, high-performing team, we’d love to hear from you. DeepFin offers a collaborative, research-driven environment where ideas move quickly from concept to execution and where every contribution has visible impact.
Join us in building the next generation of deep-learning-driven trading systems - shaping the future of finance through innovation, rigour, and technology.
Ready to apply?
Apply to DeepFin Research
QA Automation Engineer - Fully Remote, Turkey Based
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About Appier
Appier is a software-as-a-service (SaaS) company that uses artificial intelligence (AI) to power business decision-making. Founded in 2012 with a vision of democratizing AI, Appier’s mission is turning AI into ROI by making software intelligent. Appier now has 17 offices across APAC, Europe and U.S., and is listed on the Tokyo Stock Exchange (Ticker number: 4180). Visit www.appier.com for more information.
About the role
Appier is seeking Software Engineers, QA Automation to ensure continuous delivery of high-quality system. You will work with engineers to design testing plans for various types of systems - large traffic distributed system, machine learning algorithm, big data platform, frontend system, etc. He/ She will master the skills in defining suitable test strategies and test automation for different types of systems.
[The seniority/title is determined by job-related skills, experience, and evaluation after the interview.]
About you
- 3+ years of experience in QA Engineering with a focus on automation and test strategy.
- Proficiency in scripting languages (e.g., JavaScript, Java, or similar) for writing automated tests.
- Hands-on experience with test automation frameworks (Playwright is a strong plus).
- Strong experience with API testing tools (Postman, RestAssured, or equivalents).
- Exposure to backend service testing (a plus).
- Experience in cross-browser and cross-platform compatibility testing.
- Mobile testing experience on both iOS and Android.
- Familiarity with performance testing concepts and tools (nice to have).
- Deep understanding of SDLC, Agile methodologies, and QA’s role in shaping product quality early in the cycle.
- Strong knowledge of test pyramid principles and best practices for balancing manual vs automated test coverage.
- Practical experience with Jira and TestRail (or similar test management tools).
- Excellent communication and collaboration skills, with the confidence to question and propose improvements.
- Analytical mindset with strong problem-solving abilities.
- Self-discipline and adaptability to succeed in a remote-first environment.
- Ability to decide regression test coverage independently.
- Strong ownership of manual test efforts, complemented with automation where it adds most value.
- A questioning mindset that ensures no assumption goes untested.
- Availability in a timezone similar to European time.
#LI-Fully Remote
Ready to apply?
Apply to Appier