gb-coding.nl
Services

Engineering services that ship.

Pick a focused engagement or combine them into a full build. Every service includes architecture, implementation, and handover.

01

Fullstack Development

Modern web products end-to-end — from polished UI to a robust backend you can grow.

  • Next.js frontend (App Router, Server Components)
  • Kotlin backend with Ktor or Spring Boot
  • Postgres, MongoDB, MySQL
  • CI/CD, monitoring, observability
02

Backend Systems

APIs and services designed for scale, security, and maintainability.

  • REST and GraphQL APIs
  • Microservices and event-driven architectures
  • Authentication systems (OAuth, JWT, SSO)
  • Database design and performance tuning
03

Mobile & Desktop Apps

Ship to every platform from one Kotlin codebase.

  • Kotlin Multiplatform (Android, iOS, Desktop)
  • Native performance, shared business logic
  • Offline-first sync patterns
  • App store deployment
04

AI-Generated Websites

Marketing sites built and hosted on Lovable in days, not weeks.

  • Delivery in 24–72 hours
  • 3–10 pages, custom design
  • SEO + analytics out of the box
  • Hosting and updates included
Authentication

Auth that fits your stack.

The right auth depends on your team, security needs, and existing systems. Here's what I work with — chosen per project.

Supabase
Recommended for most projects
Keycloak
Self-hosted, enterprise SSO
Auth0
Hosted, broad protocol support
Firebase Auth
Mobile-first, easy setup
Custom JWT
Full control, custom flows
New · Courses

Level up with senior-grade courses.

Practical online courses on Git, modern coding, CI/CD pipelines, and customer satisfaction. Buy once, watch forever, ship better next week.

Start your project today.

Tell me about what you're building. I'll come back with a free estimate within 24 hours.