About
Software engineer and founder based in France. I build privacy-first SaaS products end to end — code, infra, and go-to-market. Right now I'm shipping ZeroTrust Transfer: end-to-end encrypted file transfer where the server never sees your files. Everything is encrypted in your browser (AES-256-GCM), the key lives in the link and never reaches our servers, and it's hosted in France. Same zero-knowledge approach across ZeroTrust Share and ZeroTrust ID. I also run IdeaScorer and LudoTracker, and I validate new ideas in public — landing page, real ad budget, hard kill thresholds — before writing a single line of product code. The track record, failures included, is at rathgeber.dev. Happy to talk self-hosting, end-to-end encryption, and killing your own ideas early.
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