Full-stack product engineering: platforms shipped by small teams, and migrations that keep production live throughout.

A reliable voice pipeline, running as systemd services

openWakeWord → faster-whisper → LLM → Piper TTS, hands-free as systemd user services, with NFC-triggered automation via a /trigger endpoint. Design principle: 95% reliability on three or four workflows before adding a fifth.

• FastAPI
• WebSocket
• systemd
• Piper TTS

Reliable release tracking without a perfect API

No free source cleanly covers manhwa release dates, so a ComicK → MangaDex → MangaUpdates cascade with guardrails and cadence estimation keeps chapter numbers honest — over an RSC (force-dynamic) Next.js app with a Prisma 7 / PostgreSQL core.

• Next.js 14
• Prisma 7
• PostgreSQL
• multi-source cascade

A payments-grade platform built by three people

Stripe Connect Express for creator payouts, Cloudflare R2 for media, Prisma over Supabase Postgres, and a Fastify + WebSocket backend — architected to stay small-team maintainable.

• Fastify
• Stripe Connect
• Prisma
• Cloudflare R2

A pure domain engine behind a full-stack product

A renovation modelled as lots → rooms → surfaces, with a formula rules engine turning geometry into costed material quantities, worksite tracking by trade with planning and budget-vs-actual, and an offline write queue — over ~30 tables on Next.js 16 with Server Actions.

• Next.js 16
• Server Actions
• Prisma 6
• Vitest

LiDAR scans turned into exact, editable geometry

RoomPlan / ARKit scans become a clean editable model — free polygons, per-wall heights, sloped ceilings — with insulation offset geometrically for real post-works surfaces, all over a single Supabase / PostgreSQL schema shared with the Domus web calculator.

• Swift
• RoomPlan
• ARKit
• Prisma

A command suite from intake to merge

Task intake, implementation, ripple-effect verification, and status sync as composable commands wired into Notion and GitHub.

• Notion API
• GitHub MCP

A full two-site lab under nested virtualisation

The whole topology prototyped under nested KVM on Proxmox, documented in NetBox and observable through Elasticsearch — reproducible without any physical second site.

• Proxmox
• KVM
• NetBox
• Elasticsearch

Migrating without downtime, 30 schools live

A strangler-fig migration off legacy Django to a Vue 3 / Quasar front end and a freshly designed API, cutting over incrementally while ~30 schools keep running in production.

• Vue 3
• Quasar
• Django
• REST API