ABKdev
Available for new projects and competitions

Software Engineer
& Hybrid Athlete

I build high-performance digital products by day and train as an hybrid athlete in different sports. Ahmet Berkay Koçak — full-stack software developer based in Istanbul.

Experienced in full agentic AI-driven development — this site itself was built end-to-end that way.

ABK
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SELECTED WORK

Projects

Screenshot of FreshDirect
FreshDirect
E-commerce platform for fresh produce delivery. Built a scalable, user-friendly shopping experience with real-time inventory and order management.
Next.jsReactNestJSTailwind CSSSCSSGraphQLTypeScriptCypressJestReduxRedux ToolkitMUIshadcn/ui
Screenshot of AI Music Generator
AI Music Generator
AI-powered music generation platform. Built the complete frontend interface for creating, editing, and managing AI-generated music tracks.
Next.jsReactTypeScriptNode.js
Screenshot of WODBell
Screenshot of WODBell
Screenshot of WODBell
WODBell
Mobile timer app designed for CrossFit and functional fitness workouts. Submitted for App Store review -- not live yet, but launching soon.
React NativeExpoTypeScriptSupabasePostgreSQLZustandRevenueCat
Screenshot of OrthoFlow
Screenshot of OrthoFlow
Screenshot of OrthoFlow
OrthoFlow
Dental aligner (clear braces) treatment tracking app. Helps orthodontic patients track their treatment progress, capture photos, set wear reminders, and monitor daily wear goals.
React NativeExpoTypeScriptSupabaseZustandTanStack Query
CAREER HISTORY

Experience

  1. FreshDirect (USA)
    Sep 2025 -- Present
    Frontend Developer
    • Scalable frontend architectures with Next.js, TypeScript, and SCSS
    • Led CSR/SSR performance optimizations, improving Core Web Vitals
    • Built PDP features, Gift Card flows, Single Page Checkout
    • Contributed to company-wide accessibility (a11y) / WCAG initiatives
    • Scalable data-fetching with GraphQL, Apollo Client, and REST
    • GA4 and Mixpanel tracking for data-driven product decisions
    • Frontend test coverage with Jest and Cypress
    • Currently leading a from-scratch rewrite of the website on a new stack -- Next.js 16, Tailwind CSS, shadcn/ui -- server-side with Next.js Server Actions, aiming for high performance and a smooth experience on mobile web
  2. Tintech
    Mar 2024 -- Sep 2025
    Full-Stack Developer
    • Built the platform from scratch: Next.js, React, Node.js, Express.js, MongoDB
    • Custom CMS and admin panel for non-technical content management
    • Next.js SSR/SSG for an SEO-friendly, high-search-visibility infrastructure
    • Designed RESTful APIs for secure frontend-backend communication
  3. Dexport
    Nov 2023 -- Sep 2024
    Frontend Developer
    • Developed a hybrid social e-commerce ecosystem from the ground up, merging social engagement with robust retail and wholesale management tools
    • Social Engine: Built high-performance features for user-generated content, including real-time Posts, Stories, and Reels, using Next.js and optimized media delivery
    • Business Infrastructure: Engineered a multi-tenant architecture allowing users to create and manage independent Company Profiles with dedicated inventory management
    • Dual-Channel Commerce: Integrated comprehensive modules for both Retail (B2C) and Wholesale (B2B) sales, supporting bulk pricing, stock management, and order tracking
    • Modern Styling: Implemented a highly responsive, mobile-first UI using Tailwind CSS, ensuring a seamless experience across web and mobile views
    • Scalable Architecture: Optimized the frontend for fast rendering and SEO while maintaining complex state management for high-frequency user interactions
  4. Hogarth Worldwide
    Feb 2023 -- Sep 2023
    Frontend Developer
    • Specialized in building and maintaining localized web platforms for global technology leaders in the Middle East region
    • Multilingual Expertise: Developed fully responsive websites with native support for English and Arabic languages
    • Enterprise Standards: Maintained the digital presence of top-tier tech companies, focusing on performance, SEO, and regional compliance
    • RTL Implementation: Expertly handled Right-to-Left (RTL) layouts and typography for Arabic-speaking audiences
  5. Independent
    4 years
    Fitness Trainer
    • Delivered private (1-on-1) training sessions
    • Led group training classes
    • Areas of focus: general fitness, CrossFit, calisthenics, gymnastics, and Hyrox
TOOLKIT & LIFESTYLE

Skills

ReactNext.jsTypeScriptReact Native (Expo)GSAPFramer MotionTailwind CSSHTML5 / CSS3Responsive DesignWCAG / AccessibilityInternationalization (i18n)Node.jsExpress.jsNestJSMongoDBRESTGraphQLApollo ClientAI integrationsReduxZustandTanStack QueryJestCypressGTM / GA4MixpanelCore Web VitalsSEOCrossFitHyroxRunningCalisthenics
The hybrid athlete mindset

Competing across CrossFit, Hyrox, and running has taught me that the same principles that make a great training block — progressive overload, recovery, specificity — make great software. Discipline compounds.

GET IN TOUCH

Let's work together

Open to new projects, freelance work, and interesting conversations. Reach out directly, or ask the chatbot above.

aberkayk@gmail.com+90 506 669 57 96linkedin.com/in/ahmetberkaykocakgithub.com/aberkayk@ahmettkocak