Kaan Mert Koc

AI engineering

• Agentic QA swarm: built 11 LLM-driven browser agents acting as hosts, members, and guests in real webinars on per-PR previews; Gemini evaluates interactions using vision and structured output. Runs publish video, screenshots, per-agent feedback, and token costs; findings led to product fixes
• Live-event agents: built a seller-journey suite covering an owner, 3 staff roles, and 6 guest personas registering, buying, or dropping off; step-by-step evaluation and an LLM customer judge assess each persona’s experience
• Proof-gated review: co-built the team’s Claude Code harness (triage → spec → TDD → verify → multi-agent PR review); added prover agents that reproduce P0/P1 findings in isolated worktrees and databases, plus mutation checks before acceptance criteria can pass
• Visual PR evidence: built agent-captured before/after screenshots at 3 viewports, provenance manifests, automatic embedding in PR descriptions, and a reviewer skill that audits the evidence
• AI-assisted operations: routed Sentry issues to GitHub Copilot’s coding agent; built a Claude skill to take over stalled Copilot PRs with Sentry root-cause analysis, test-first fixes, and updated PR descriptions
• CI and previews: built per-PR preview environments triggered by comments and a regression-risk gate that automatically runs E2E tests on risky changes

Product engineering

• Core engineering: 550+ merged PRs on a multi-tenant community SaaS (Next.js App Router, React 19, tRPC, Prisma/PostgreSQL, Clerk, Inngest); shipped rooms, posts, membership lifecycle, permissions, moderation, and en/de localization through Open Beta
• Live commerce and messaging: webinars and live shopping with realtime product overlays, a drag-and-drop layer editor, and in-stream checkout; direct messaging and moderated live chat with scoped Ably tokens and persisted history
• AI authoring: selection-based edits, AI review, prompt assist, and AI-seeded community onboarding
• Identity and engagement: cross-platform Clerk SSO, user sync and external-ID backfill; localized transactional emails, in-app deep links, and a weekly digest engine with ranking, branding, and opt-out preferences
• Hardening and platform: closed cross-tenant authorization gaps and cleared 74/76 Dependabot alerts (all 32 highs); SEO foundations, Dockerized local development, and Next.js 16, React 19, and rich-text editor upgrades

• Sole engineer: 1.4M visits, 3.0M pageviews in 12 months (zero marketing budget)
• SEO: JSON-LD, AI metadata (gpt-4o-mini/Strapi), 1.01M clicks, 15.9M impressions
• Architecture: Next.js SSR (Vercel/Coolify), custom Strapi CMS, block-based page builder
• Performance: Caching/revalidation, SSR TTFB 100ms/p95 500ms, zero downtime, CWV green
• Cosmo Quiz API: 1.3M solves/5 months, 10M+ events, 2.0M requests/month, Bun/Hono/TypeScript/Drizzle/SQLite, 48ms/p95 96ms, 99.9% uptime
• Search: Meilisearch AI semantic "Similar Documents" (20 per page)
• Subscribe: SSR gating, iyzico router (20+ endpoints), magazine pipeline, Shopify, 170 subscriptions
• Shop: Shopify SSR, webhook revalidation, 1,305 orders, 280K TRY revenue
• Auth/Admin: cross-domain SSO (NextAuth), React/Vite/TanStack admin with RBAC/analytics
• CI/CD: GitHub Actions, E2E tests, observability/alerting

• Aposto! mobile app (50+ screens): offline podcast, read list, Turkish/English, dark/light modes, TestFlight/Play Console
• 100K+ downloads, 3.05M App Store impressions, Apple featured (2022), Top 3 Turkey (Media)
• aposto.com (Next.js 12/Redux): inbox, reading, authors, authentication, follow/unfollow, share
• About/Newsletters subdomains (Next.js 13 App Router), Lighthouse 98
• Premium subscriptions (Stripe): paywall, card management, shared TypeScript KV library
• Premium Stories: Go (chi)/SQLite, Cloudflare-cached, 100K requests/month
• Admin modernization: CRA/React 16 → Bun/Vite/React Router, TTS editor (ElevenLabs)
• Quality: crash monitoring, E2E paywall tests
• Impact: 100K+ monthly visitors, 1.5M+ users, 100K+ USD revenue, ~10 team

• Shop, editorial site and festival app for a biannual print magazine; 50K+ users, 600K+ TRY GMV
• Next.js 14 SSR e-commerce (Firebase Functions/Firestore, 20+ endpoints, iyzico), custom admin (merch/categories/coupons)
• Festival inventory: QR-coded SKUs, isolated stock pools
• Strapi CMS (self-hosted): issue > sections > content modeling, unified web/mobile
• Expo app: Feed, Events (iyzico ticketing, QR check-in), Explore (mini-games, Spotify), Shop, Perks
• Auth/Growth: NextAuth (web), soft login/registration walls
• Media/Performance: Bunny CDN, video carousel, GIF galleries
• Ops: Vercel, VPS Strapi, Firebase backend, ~50 USD/month
• Observability: Firestore/Functions dashboards/alerting
• "Sober People" SEO catalog (50+ profiles)

• Sole developer (NYC integrity/trust platform): backend, database, mobile app, admin site
• 180+ TestFlight builds; Firestore (10K+ documents, security rules)
• Firebase Functions: 12 RESTful endpoints, 150 services (pacts, connections, data sharing, notifications, moderation, analytics)
• Expo/React Native/TypeScript/Redux app (50+ screens, 1,000+ components), admin dashboard