1234567.dev
Based in Eindhoven • Available for Contract

I Ship Web Apps & Backend Systems

Independent developer. I take full ownership of delivery: architecture, implementation, testing, deployment, and production support.

See What I Build

What I Build

Production software for startups and scale-ups that need to ship.

Internal Tools & Dashboards

Admin panels, reporting dashboards, and operational tools. Data ingestion, visualization, and system integration included.

APIs & Backend Services

RESTful and GraphQL APIs, background processors, webhooks, and data pipelines. Built for reliability.

MVPs & Product Builds

Functional products to validate ideas and ship to users. Production-grade code, not throwaway prototypes.

Integrations & Automation

Connect systems to payment processors, CRMs, analytics, and SaaS tools. Replace manual processes with reliable automation.

How I Work

Ownership, communication, and shipping. That's the process.

1

Scope

Define requirements, constraints, and success criteria upfront. No ambiguity.

2

Plan

Technical approach, stack selection, and milestones.

3

Build

Regular commits, frequent demos, open communication. Progress, not surprises.

4

Test

Automated tests, error handling, documentation where it matters.

5

Ship

Deployed to your infrastructure with CI/CD. Full handoff and knowledge transfer.

Ownership

I own the code, bugs, and fixes

Communication

No disappearing acts

Production

Code ships and runs reliably

Selected Work

Client Project

Real-Time IoT Anomaly Detection Platform

Problem

Client needed a production-ready system to detect anomalies across distributed IoT devices with multi-tenant support and reliable monitoring.

Outcome

Shipped to production with multi-tenant support, monitoring dashboards, and reliable detection across device networks.

What I Delivered

Delivered a complete real-time detection pipeline: backend services, simulators, dashboards, and observability workflows. Built data ingestion, validation routines, and health checks. Took ownership of system reliability and production readiness.

Stack

NestJS NATS PostgreSQL Observability

References available on request.

Engagement Models

Clear scope, defined deliverables, predictable outcomes.

MVP Sprint

Idea to working product. Validate concepts or launch a first version.

Deliverables

  • Functional web application
  • Core features scoped and built
  • Deployed to production
  • Documentation and handoff

4-8 weeks

Integration Sprint

Connect systems, build internal tools, or extend existing products.

Deliverables

  • Third-party API integrations
  • Internal tools and dashboards
  • Backend services and endpoints
  • Testing and deployment

2-6 weeks

Ongoing Build Support

Continuous development capacity without the overhead of hiring.

Deliverables

  • Dedicated development hours
  • Feature development and fixes
  • Code reviews and maintenance
  • Direct communication

Monthly, minimum 3 months

Best fit: teams with defined requirements and budget allocated for development. If you're still exploring what to build, a scoping call can help clarify.

About

Independent developer based in Eindhoven, Netherlands. I build web applications, APIs, and internal tools for startups and growing companies.

I handle the full stack: architecture, implementation, testing, deployment, and maintenance. One person, full ownership, end-to-end delivery.

I work best with technical founders, CTOs, and engineering leads who have a clear problem and need it solved. No hand-holding required.

Stack

TypeScript Node.js Python PostgreSQL React AWS Docker
GitHub