Senior Fullstack Engineer — building maintainable, elegant web and mobile products.

I design and build products end to end — from architecture and data modelling through to a polished product. The best part for me is seeing real people use something I've built and have it genuinely improve their workflow, or a part of their day. Currently engineering for global clients at Lumenalta, and founder of my own practice, Dev Artist.

I was architect and lead developer of RobinHQ, an e-commerce customer-service/helpdesk SaaS, taking it from the first commit through to a mature platform — and I've spent my career raising engineering quality through TDD, DDD, clean architecture and CI/CD, while mentoring the teams around me.

Lately I've been moving deeper into AI engineering — bringing LLMs into real products with the same discipline I hold the rest of the stack to. In Paperwork I've shipped two production AI features: multimodal invoice/receipt extraction, with LLM output cross-checked by a deterministic validation layer, and an agentic VAT pre-check whose anomaly detector reasons over tenant-scoped, read-only tools. My focus is AI that's accurate, cost-aware and production-grade — not demos.

Working with: TypeScript · React · Next.js · Node.js · GraphQL · PostgreSQL · MongoDB · Docker · AWS

Approach: clean architecture, TDD/DDD, CI/CD, and AI-native engineering

Based in: the Netherlands · working remotely

Paperwork — bookkeeping and Dutch tax administration for small-business owners. Website · Live app (login required).

• 📖 Read the code: paperwork-public (React · Node · MongoDB · Redis) · paperwork-app-public (Ionic React · Capacitor)
• 🤖 Two production AI features, code included: multimodal invoice/receipt extraction (LLM output cross-checked by a deterministic validation layer) and an agentic VAT pre-check whose anomaly detector reasons over tenant-scoped, read-only tools — with tenantId bound at construction so it can never reach another tenant's data.
• 📱 Get the app: App Store · Google Play.

(Public repos are source-available for viewing/evaluation — see each repo's license.)

• Website — devartist.nl
• LinkedIn — linkedin.com/in/henrycordes

Open to senior fullstack / product engineering roles — remote.