Mission-Critical Backend Systems, Designed for Scale and Built to Last.

We design and build backend systems with clean architecture, long-term maintainability, and production resilience at the core. The focus is not just delivery — but structural clarity, testability, and systems that remain stable as complexity grows.

Our Process - How we work.

We focuses exclusively on backend solutions, turning your technical specifications into reliable APIs, robust services, and maintainable systems.

  • Documentation-Driven. Every project starts from clear technical documentation. I translate specs into fully functional backend solutions with measurable outcomes. See example.
  • Clear Acceptance Criteria. Each deliverable comes with defined acceptance criteria, so you know exactly what to expect and when it’s done. See example.
  • Professional Setup. I work from high-end devices: a MacBook Pro M4 Pro 16" and a PC with AMD Ryzen 9 7950 X3D and 128GB RAM, ensuring performance and reliability for every project. See my setup.
  • Flexible Engagement. I work asynchronously with minimal meeting overhead, ensuring efficient collaboration across US, EU, and APAC time zones. Every engagement is structured for clarity, quality, and long-term maintainability.

Clean Systems Consulting delivered a perfectly structured API that integrated seamlessly with our existing platform. Their attention to clean architecture and thorough unit testing gave us confidence in long-term maintainability.

Phobia

Our Expertise - What we do.

We focuses exclusively on backend solutions, transforming your technical specifications into reliable APIs, robust services, and maintainable systems.

  • API Development. We design and implement secure, scalable APIs that integrate seamlessly with your existing systems, ensuring robust communication between services.
  • Clean Code & Architecture. What sets us apart is our focus on clean code and clean architecture, ensuring that your backend is maintainable, modular, and future-proof.
  • Unit Testing & Code Quality. All our deliverables are covered by thorough unit tests, maintaining high code coverage and minimal code smell for long-term stability and reliability.
  • Tech Stack & Flexibility. Our core stack is Java with Spring Boot and Ruby with Rails, but we can also work with Python, Node.js, and Golang on request, adapting to your project needs.

Engagements are structured based on scope and delivery complexity. Typical senior backend engineering engagements start at €3,000 per month.

Harnessing technology for a brighter future

We believe technology is the answer to the world’s greatest challenges. It’s also the cause, so we find ourselves in bit of a catch 22 situation.

FamilyFund

Case study

Skip the bank, borrow from those you trust

FamilyFund is a crowdfunding platform for friends and family. Allowing users to take personal loans from their network without a traditional financial institution.

Unseal

Case study

Get a hodl of your health

Unseal is the first NFT platform where users can mint and trade NFTs of their own personal health records, allowing them to take control of their data.

Phobia

Case study

Overcome your fears, find your match

Find love in the face of fear — Phobia is a dating app that matches users based on their mutual phobias so they can be scared together.

Tell us about your project

Our offices

  • Copenhagen
    1 Carlsberg Gate
    1260, København, Denmark
  • Billund
    24 Lego Allé
    7190, Billund, Denmark