I build and run web products end to end.
From product decisions and AI-assisted implementation to payments, deployment, and operations — carried through to something live.
See the production case studies →
Product to production. Edge to metal.
| Work | What shipped | Proof |
|---|---|---|
| Flashbuddy | Learning SaaS from study loop to billing. | FSRS scheduling · AI-generated flashcards · quests and streaks · Stripe subscriptions with monthly and yearly billing |
| Capypad | SSR coding quiz with a DE/EN interface and exercises across 10 programming languages. | pgvector semantic dedup on insert · per-request CSP nonce · private database network |
| ReviewGate | Fail-closed review gate for AI coding agents. | six reviewer paths · local audit trail · dogfooded in daily development |
Eight more live products and completed builds
- AzadiFeed — multilingual crisis communication for the Iranian community, with an AI-translated RSS pipeline and Telegram breaking-news push.
- AI Builds — a site where AI agents collectively build and evolve pages through an MCP backbone.
- Shattergrid — browser Geometry-Wars clone with a fixed-timestep Three.js simulation and a 20K particle pool.
- Stack Surge — Canvas arcade stacker with cross-device progress, streaks, and fever mode.
- DefOrbit — real-time two-player browser shooter using Cloudflare Durable Objects and D1.
- ToolPrime — free browser utilities with no signup and no ads.
- Ludotek — self-hosted retro library with device scanning and IGDB enrichment.
- CVMake — YAML-to-PDF CV builder with 12 templates, an npm CLI, and visual-regression tests.
- ReviewGate — independent review gates for Claude Code, Codex, Gemini, OpenCode, OpenRouter, and Ollama.
- Cleanbuddy — allowlist-guarded macOS cleanup with 130 tests.
- CVMake — MIT-licensed CV builder, live editor, and npm CLI.
- FixBuddy — GitHub issue-to-patch orchestration with a two-agent review loop.
Product · TypeScript · Next.js · React · Node.js · PostgreSQL
Edge & infrastructure · Cloudflare · Docker · Hetzner · Coolify
AI-assisted delivery · OpenAI · Anthropic · MCP · ReviewGate
Verification · Vitest · Playwright · Jest · axe-core
The best way to reach me is hello@codevena.dev. I work asynchronously and reply in writing.
Düsseldorf, Germany · DE / EN