Kaan Mert Koç

Full-Stack Engineer

Beşiktaş, Istanbul, Türkiye

About

Senior Full-Stack Engineer specializing in delivering high-performance digital platforms. My expertise includes building SEO-first web applications with Next.js, mobile apps with React Native, and high-traffic RESTful APIs using technologies like Go, TypeScript, and Node.js. I have a proven track record of architecting and implementing systems from the ground up, successfully driving organic growth to over a million monthly visits and millions of pageviews. My work powers platforms that handle millions of API requests per month with low latency and high reliability while generating hundreds of thousands in revenue on lean infrastructure. I am passionate about creating scalable, reliable, and user-friendly applications, with a strong focus on performance, Core Web Vitals, and robust CI/CD practices.

Experience

  • Full Stack Engineer at ablefy
    Dec 2025 - Present · 7 mos

  • Chief Technology Officer (Hands-on Senior Full-Stack & DevOps) at Cosmopolitan Türkiye
    Jun 2024 - Sep 2025 · 1 yr 4 mos

    As the sole engineer, architected, implemented, and delivered the entire digital platform for the brand. Drove 100% organic growth to over 1.4 million visits and 3.0 million pageviews in under 12 months with no marketing budget. Engineered a high-traffic API serving over 2.0 million requests per month with a 95th percentile latency below 100 ms. Built and maintain a custom Strapi CMS, a Shopify e-commerce integration that generated over 280K TRY in revenue, and a subscription service using iyzico. Ensured high performance and reliability, achieving green Core Web Vitals on core pages and maintaining zero downtime

  • Aposto (Hybrid)
    • Mobile / Web Application Developer
      Jun 2024 - Sep 2025 · 1 yr 4 mos

      Shipped the flagship Aposto! mobile application, featuring offline podcasts, dark/light modes, and more, leading to over 100K downloads and being featured by Apple. Co-built the main aposto.com web platform using Next.js and Redux. Developed and maintained premium subscription services using Stripe and built backend services in Go for core features. Contributed to a platform serving over 100K monthly visitors and 1.5M+ total users.

    • Mobile / Web Application Developer
      Sep 2021 - Jun 2024 · 2 yrs 10 mos

  • Lead Full Stack Engineer at Sober
    Mar 2024 - Feb 2025 · 1 yr

    Led the development of a Next.js e-commerce platform with a Firebase backend and iyzico payment integration. Built a companion Expo mobile app featuring event ticketing with QR check-in, a media feed, and an integrated shop. Engineered a custom inventory system with QR-coded SKUs for festival-only sales. The platform successfully supported over 50K users and generated more than 600K TRY in GMV.

  • Project Intern at University for Information Science and Technology "St. Paul the Apostle", Ohrid, Macedonia
    Aug 2021 - Sep 2021 · 2 mos