CONFECOOP Federation — Multi-tenant SaaS Platform
Next.js · React · TypeScript · Python · FastAPI · Prisma · PostgreSQL · Auth.js · Neo4j
A multi-tenant governance platform: one product where every member organization signs in and runs its own operations end to end, fully isolated. React on the front, a Python FastAPI service behind it, with per-tenant role-based access, session authentication, an AI layer, and an immutable audit log. Serves 85+ organizations.
- Multi-tenant by design: each organization’s data, members, voting and documents are isolated, with role-based access enforced per tenant.
- React/Next.js front end over a typed API; a Python FastAPI service runs the AI layer (retrieval with cited answers, LLM document classification behind a human-review queue).
- Session-based authentication, per-tenant RBAC, and a tamper-evident, hash-chained audit log for every action; containerized behind a load balancer with CI/CD.
Python · PostgreSQL · Redis · REST APIs · append-only ledger · RBAC
A financial-operations platform, in production, where invoices, payroll, expenses and month-end close run on a double-entry, append-only ledger, and every action waits on a human sign-off. Adopted across public and social-economy institutions. The closest thing I have built to a financial-automation platform: complex money workflows, auditable by construction.
- Financial workflows end to end: invoices, payroll, expenses and month-end close on a double-entry, append-only ledger.
- Role-based access and an approval gate, so sensitive financial actions only execute after a human sign-off.
- A retrieval assistant answers questions from the organization’s own financial records; automated agents act over an API under scoped permissions.
sigo.so
Python · LLM · RAG · human-in-the-loop · MCP
A product built on LLM agents with a governance layer: AI proposes, a human approves, and nothing sensitive ships without a yes. The pattern for adding AI and LLM capabilities to an existing platform without giving up control or auditability.
- LLM-powered features in production: retrieval-augmented answers over a knowledge base, with human-in-the-loop approval on sensitive actions.
- Designed so AI capabilities can be bolted onto a platform safely, with every action on an audit trail.
havenware.dev
FYX Gaming — Financial-scale Platform (CTO)
C#/.NET settlement core · TypeScript/Next.js web · AWS · Solidity · multi-chain
Built and ran the platform as CTO of FYX Gaming: a settlement gateway moving in-game financial assets between game backends and public blockchains, for live titles with large user bases. The wider platform settled millions of transactions a day, on AWS.
- Owned architecture and delivery end to end on AWS: took over a messy codebase and hardened it while live, including a database migration with the system running.
- A C#/.NET settlement core with a TypeScript/Next.js web layer, settling financial assets across systems at high throughput; releases cut from manual hours to minutes.
- Signature-based authentication and upgradeable smart contracts for the export/import flow.
Next.js · React · Prisma · PostgreSQL · settlement engine · RBAC
A settlement and management platform for renewable energy communities, in production and backed by the EU LIFE programme. It turns raw meter data into clear, auditable financial accounts for every member, every month.
- Multi-party financial settlement: register members, set a sharing coefficient once, and settle automatically every month with regulator-ready exports.
- 28,000+ quarter-hour meter readings processed into monthly auditable accounts.
- Next.js/React front end, Prisma over PostgreSQL, and role-based access.
coopenergy.coop
