Martin vanDeursen
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About
I'm Martin — an AI-assisted solo developer and founder based in Haarlem.
I build practical software with modern AI tooling: Cursor, rapid prototyping, and careful product design. This site is my development portfolio — the place for shipped code, tools, and startups.
Current focus:
- Dutch Data Labs — a new startup exploring social and debate products (F-socials, AIdebate)
- The Witness Protocol Foundation — research non-profit for transparent, high-signal AI testimony work
- RepoGuardian — supervised GitHub fleet triage and maintenance
Research and design work live in separate portfolios (linked below). Past experience includes StackStudio (no longer active, kept as a portfolio piece).
Projects(6)
New startup building products at the intersection of social software and AI debate tooling.
Includes:
- F-socials — social product surface
- AIdebate (LLMargument) — structured LLM debate / argument experiments
- Startup
- Product
- Social
- LLM
- TypeScript
Supervised GitHub repository triage and maintenance assistant (live alpha). Helps keep a multi-repo fleet healthy with structured review and upkeep workflows.
- Repo intelligence & triage
- Maintenance assistant for active fleets
https://RepoGuardian.101dev.xyz
https://github.com/Nether403/RepoGuardian
- GitHub
- Fleet triage
- TypeScript
- Next.js
- Maintenance
Research non-profit focused on transparent, high-signal human testimony and AI auditing posture — counts and receipts, no hype.
Also featured on the Research portfolio.
- Foundation
- AI transparency
- Research ops
- Non-profit
Contact
Founder · Dutch Data Labs & The Witness Protocol
