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Achievements

Achievement: Pull Sharkx3Achievement: Pair Extraordinairex3Achievement: QuickdrawAchievement: YOLO

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Codevena/README.md

Markus Wiesecke · Codevena

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.

Portfolio — codevena.dev Profile views X — @codevena Email — hello@codevena.dev

Selected work

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

Contribution trail

Animated contribution snake for Codevena's GitHub activity

More shipped

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.

Open source you can inspect

  • 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.

Core stack

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

Contact

The best way to reach me is hello@codevena.dev. I work asynchronously and reply in writing.

codevena.dev · @codevena on X

Düsseldorf, Germany · DE / EN

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