Zirkel AI (Agent Systems)
Technical Lead & Product EngineerStack
- Core agent system · 17 tools
- Human-gated learning · memory tiers
- Python · FastAPI · React · TypeScript
- Postgres · in-house retrieval · tenant isolation
- 2,100+ tests · CI-gated
- Hetzner EU · GDPR engineering
Engagement
- Direct
As the team’s sole engineer, I took two product lines from concept to real-world use: a B2B agency platform and a B2C consumer product. I owned the architecture, the implementation and the operations.
I designed and built the agent core, the learning and memory layer, in-house retrieval, tenant isolation, the frontends and the infrastructure. Expert corrections become knowledge only after a human approves them. Every metric a user sees is computed in code. The model narrates results, it never invents them. Both products were validated in real-world testing with external users. If something shipped or broke on the technical side, it was mine.
