PORTFOLIO / 2025

Kaan
Mert Koc

Senior Full-Stack Engineer delivering SEO-first SSR/SSG web apps, high-traffic RESTful APIs, and mobile apps with TypeScript, Next.js, React Native, and Go.

Available for work
Istanbul, Turkey
CURRENTLY
Full Stack Developer
@Ablefy.io GmbH
2025 — Present
FOCUS
Next.jsReactTypeScriptGoNode.jsReact NativeSelf HostDockerVPS
Open Source

Contributions

My GitHub activity over the last year. Select different years to view historical contributions.

GitHub Activity

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My Projects

Check out my latest work

I've worked on high-impact projects delivering millions of visits, revenue, and user engagement. Here are some key highlights from my career.

Cosmopolitan Turkey

Cosmopolitan Turkey

As CTO and sole engineer, built and scaled a digital media platform reaching 1.4M visits and 3.0M pageviews in 12 months. Architected Next.js SSR with custom Strapi CMS, block-based page builder, and high-performance APIs handling 2.0M requests/month.

1.4M visits, 3.0M pageviews in 12 months
SEO: 1.01M clicks, 15.9M impressions
Cosmo Quiz API: 1.3M solves, 10M+ events
Shop: 1,305 orders, 280K TRY revenue
Next.jsTypeScriptStrapiBunHonoDrizzle ORMSQLiteMeilisearchiyzicoShopify
Aposto!

Aposto!

Full-stack development of popular podcast platform with 50+ screen mobile app and web presence. Delivered premium subscriptions, content management, and achieved 100K+ downloads with Apple featuring and Top 3 Turkey ranking.

100K+ downloads, 3.05M App Store impressions
Apple featured (2022), Top 3 Turkey (Media)
50+ screens, offline podcast, dark/light modes
100K+ monthly visitors, 100K+ USD revenue
React NativeExpo EASNext.jsReduxTypeScriptGoStripeSQLite
Sober Digital

Sober Digital

Led full-stack development of e-commerce platform and mobile app for festival ecosystem. Built Next.js SSR e-commerce with Firebase, custom admin, and Expo app with ticketing, achieving 50K+ users and 600K+ TRY GMV.

50K+ users, 600K+ TRY GMV
Next.js SSR e-commerce with 20+ endpoints
Expo app with ticketing and QR check-in
Self-hosted Strapi CMS with unified content
Next.jsTypeScriptReact NativeExpoFirebaseFirestoreiyzicoStrapi
iyzico-subscription-ts

iyzico-subscription-ts

Open source modern TypeScript SDK for Iyzico Subscription API. Cross-platform compatible with Node.js, Bun, Deno, browsers, and serverless environments. Zero dependencies with full TypeScript support.

Modern TypeScript SDK
Cross-platform compatible
Zero dependencies
Full TypeScript support
TypeScriptNode.jsBunDenoSDKAPIOpen Source
Get In Touch

Let's Connect

Always interested in new opportunities, collaborations, and conversations about building scalable web applications and leading technical teams.

You can also find me on LinkedIn and GitHub for professional connections and open source contributions.