Berkay Ozen

Senior Backend Engineer / Solution Architect | NestJS, AWS, Microservices | Distributed Systems (2M+ RPM) | Open to EU/UK Contract

Istanbul, Istanbul, Türkiye

About

I am a Senior Backend Engineer and Solution Architect with hands-on experience building and scaling distributed systems on AWS. At Getir, I led a 5-person backend team managing ~20 microservices, including services handling up to 2M requests per minute using Kubernetes pod scaling strategies. My work involved domain-driven design, event-driven architecture, and high-availability cloud systems. At Togg (Trumore), I designed the high-level architecture of location-based and MaaS charging systems, defining multi-region cloud strategies and mapping failure/happy paths across payment, SAP and CPO integrations. I combine backend engineering with product ownership experience, allowing me to deliver technically robust and business-aware solutions. Currently open to remote contract or full-time roles across EU/UK.

Experience

  • Togg (On-site)
    • Çözüm Mimarı
      Jan 2025 - Dec 2025 · 1 yr

      • Designed high-level architecture for location-based services and MaaS charging systems • Defined multi-region cloud deployment strategy for mobility services • Modeled system failure and happy paths across payment, SAP and CPO integrations • Led architecture decisions for scalable backend systems within mobility domain • Bridged product strategy with technical implementation across multiple teams

    • Product Owner
      Jan 2024 - Dec 2024 · 1 yr

  • Getir (Full-time · 2 yrs 7 mos)
    • Senior Software Engineer
      Jan 2023 - Dec 2023 · 1 yr

      • Led a 5-person backend team responsible for ~20 microservices in a high-scale production environment • Architected and maintained distributed systems on AWS handling up to 2M requests per minute • Implemented domain-driven design principles and event-driven architecture patterns • Designed scalable Kubernetes-based pod auto-scaling strategies • Collaborated with cross-functional product and infrastructure teams

    • Lead GIS Developer
      Jan 2022 - Aug 2023 · 1 yr 8 mos

    • Coğrafi Bilgi Sistemleri Geliştirme Uzmanı
      Jun 2021 - Jan 2022 · 8 mos

  • Software Developer at TURK AI
    Jun 2019 - May 2021 · 2 yrs

  • 4MAPS INFORMATION TECHNOLOGIES (1 yr 3 mos)
    • Project Manager
      Jan 2019 - Jun 2019 · 6 mos

      -Managing and planing of Road Data Collection Project -Cost planning -Unit prize analysis for GIS data -R&D and Affiliate Projects managing -Database Managing

    • GIS Specialist
      Apr 2018 - Dec 2018 · 9 mos

      -Geographical Data Transformation -Data Digitization -Database design, formation and integration for spatial data -Basemap production -Web scraping -Field data collection for navigation data -Web site management

  • Appraisal Expert at TSKB Gayrimenkul Değerleme A.Ş.
    Jan 2018 - Apr 2018 · 4 mos