Freelance Software Product Engineer

I help product teams build & ship software end-to-end

Full-stack product engineer with 15+ years delivering e-commerce systems in Java, Kotlin, TypeScript, and JavaScript.

Let's talk about your projectLearn more about me
Jonas Tebben

What I bring to your team

Business Alignment

I'm your single point of ownership from the first conversation to production. With no handoffs, nothing gets lost between business and engineering.

Product Mindset

I weigh every story against user outcome and business impact, and make trade-offs with a product owner's judgment.

Team Integration

I plug into your team's tools, standups, and reviews remotely, and hold myself to the same standard as an in-house hire.

Quality Code

I write code that's still easy to change a year later, thanks to high test coverage and thoughtful architecture.

AI-Assisted Delivery

I run a personal AI coding harness that handles the routine work, so each iteration ships faster and my attention stays on architecture and review.

Security & Reliability

I build security and production-readiness in from the first commit, so go-live brings fewer surprises.

Full-stack expertise

Backend Architecture

  • Scalable systems built with Java, Kotlin, JavaScript, or TypeScript
  • RESTful & event-driven API design
  • Domain-driven architecture, Moduliths & Microservices
  • Test-driven development

Frontend Development

  • React, Vue.js, and TypeScript frontends
  • Server-rendered sites with Astro & htmx
  • Responsive, accessible user interfaces
  • Core Web Vitals performance tuning

Cloud & DevOps

  • AWS containerized deployments
  • Automated CI/CD & GitOps workflows
  • Infrastructure as Code management
  • Production monitoring & incident response

Data & Integration

  • SQL & NoSQL database architectures
  • Real-time event streaming systems
  • Third-party service integrations
  • Data modeling & query optimization

Business & Requirements

  • Translating stakeholder needs into technical specs
  • Requirements engineering & scoping
  • Explaining trade-offs in plain language
  • E-commerce domain expertise, B2B & B2C

Technical Leadership

  • Guiding teams & establishing engineering standards
  • Code review & mentoring
  • Freelance lecturer in software engineering since 2012
20+ Years
Software Engineering Experience
15+ Years
E-Commerce Business Experience
Since 2017
Full-Time Remote Collaboration
Since 2012
Lecturer at IT & Business School

Core technologies

Java
Kotlin
JavaScript
React
Spring
AWS

Ready to ship faster?

Tell me what you're building, and I'll tell you where I can help.

Get in touch