Case studies & builds

Projects

RAG systems, applied ML tools and product engineering work. Each one names the constraint it was built against.

Tech: NestJS

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Finance Owl: Personal finance with the AI optional

Finance Owl· Web Apps· Active

A personal finance app — bank sync, budgets, investments — across web and mobile, where the AI features are optional and can run on a local model.

ActiveFeb 2026

Personal finance with the AI optional

Finance Owl

A personal finance app — bank sync, budgets, investments — across web and mobile, where the AI features are optional and can run on a local model.

Web Apps · AI/ML

Highlights

Rules-based categorisation first, AI only for what the rules cannot place
Passkeys and TOTP, with the 2FA QR code rendered locally rather than by a third party
An idempotent Stripe webhook and a real job scheduler