Client · 2026

B.Teil Invest investor portal

Investor management platform for a German investment company. The starting point was the founder's AI-generated prototype, which already carried the domain knowledge and core features. I re-architected it into a maintainable production system.

• ·In production, with continuous feature delivery through spec-driven agentic development.
• ·Strictly typed TypeScript, a type-safe data layer, hardened authentication, and field-level encryption of personal data.
• ·KYC flows with ID-scanner import, subscription flows, encrypted document storage, and PDF document generation.
• ·Investor payouts with SEPA export, DATEV export, and audit logging.
• ·Full test discipline added to an untested codebase: a Playwright end-to-end suite plus backend integration tests.
• ·Runs on the client's existing Hetzner VMs and object storage, with self-updating deployment and backups.

Stack

• Next.js
• TypeScript (strict)
• PostgreSQL
• Drizzle ORM
• Zod
• Docker
• GitHub Actions