Istanbul, Istanbul, Türkiye
Backend Engineer with 4+ years of experience building high-throughput, fault-tolerant systems, most recently architecting event-driven settlement engines for real-time iGaming platforms. At Interactive Digits, I engineered 150+ sport-specific settlement functions across 9 sports, designed dual-trigger validation pipelines, and built idempotent processing layers that eliminated duplicate payouts under live betting conditions. The systems I built process millions of real-time events with high reliability in production environments. My background spans backend engineering (Node.js, Java, C#), distributed systems (Redis, Kafka, event-driven architecture), and data engineering (MySQL, MongoDB). I'm comfortable owning critical paths end-to-end, from system design to production deployment. Before my iGaming career, I contributed to defense-industry research at HAVELSAN/Boğaziçi University, co-authoring an IEEE publication on Kalman Filter-based maritime target tracking systems. Boğaziçi University graduate - B.S. Computer Engineering, M.S. Electrical & Electronics Engineering. Open to backend engineering roles in fintech, gaming, real-time data systems, or distributed systems domains. Skills: Node.js · Java · C# · Redis · MySQL · MongoDB · Kafka · Docker · REST APIs · Event-Driven Architecture · Microservices · Distributed Systems · High-Throughput Systems · Idempotent Processing · Fault Tolerance · iGaming · Settlement Systems · Real-time Data Processing · Signal Processing · Kalman Filter
Designed an event-driven settlement engine processing real-time gaming events across 9 sports, engineering 150+ sport-specific settlement functions covering all major markets. - Integrated real-time sports data feeds via JSON-based pipelines, implementing resilient ingestion logic to handle delayed, missing, and out-of-order event signals without settlement disruption - Implemented a dual-trigger settlement system using message types and state codes, paired with an idempotent validation layer and re-check mechanisms to eliminate duplicate payouts - Designed fault-tolerant backend logic in Node.js and Redis to sustain reliable settlement across 1,000+ concurrent matches and up to 2,000 simultaneous markets during peak weekend loads - Collaborated cross-functionally with QA, Product, and DevOps teams to deliver production releases in mission-critical live gaming environments
Independent Study & Game Development - Pursued a deliberate career transition into game development, completing focused Unity training in gameplay programming, software architecture, and interactive application development - Applied backend engineering expertise to game systems design, studying object-oriented design patterns and game engine architecture in depth - Developed a fully playable 3-match puzzle game in Unity, applying core game mechanics, scene management, and object-oriented design patterns - Evaluated game industry opportunities with the goal of combining strong software engineering foundations with game development specialization
Served as a software-focused Lieutenant at Kuleli Military School, responsible for both IT operations and internal software development for an institution of 500+ personnel. - Developed and deployed internal software solutions digitalizing manual attendance, examination seating, and administrative workflows - Built custom applications improving operational efficiency and reducing administrative overhead by 50% - Owned the institution's complete IT infrastructure including system maintenance, user support, and operational continuity Received Outstanding Service Plaque (Üstün Hizmet Plaketi) upon completion of service.
Served as the sole technology owner for a textile export company, responsible for end-to-end IT consultancy, software development, and business process automation. - Designed and launched the company website and LinkedIn business page to establish digital presence and support outreach to UK and Canadian school textile markets - Conducted targeted B2B outreach by researching prospects via LinkedIn, compiling contact lists, and deploying a Python script to automate bulk catalogue distribution via email - Engineered 10+ Excel VBA macro programs automating export invoice generation, eliminating repetitive manual processing across recurring export workflows - Managed company IT infrastructure, internal systems, and technology operations supporting day-to-day business activities
Part-time academic collaboration focused on defense-grade maritime target tracking systems, conducted in parallel with professional software engineering work. - Contributed to a HAVELSAN defense project developing maritime vessel tracking systems for the Turkish Armed Forces - Conducted performance analysis and optimization of multiple Kalman Filter algorithms for naval vessel tracking applications, simulating diverse motion scenarios and models - Co-authored and published a peer-reviewed conference paper in IEEE based on this research Publication: "Performance Analysis of Multiple Kalman Filter Systems" İ. Coşandal, M. Karayaka, Y. Akalın, M. Altun, E. Anarım and M. Koca, IEEE ASYU 2019 — doi: 10.1109/ASYU48272.2019.8946382