About DOOR-KIJK
A studio of engineers who refuse to ship what they wouldn’t maintain.
We started DOOR-KIJK because too many software projects end in quiet disappointment. We wanted to build a practice where senior engineers stayed close to the work, where decisions were transparent, and where the result still felt right two years later.
// Our story
From three engineers to a European practice.
The first DOOR-KIJK project was a rescue mission for a logistics platform melting under its own complexity. We cut the codebase in half, rebuilt the deployment pipeline, and trained the client’s team to keep it that way. That engagement set the pattern for everything since: deep technical work, honest communication, and a stubborn commitment to leaving things healthier than we found them.
// Values
What we stand for.
Substance over surface
We build what works, then make it beautiful — never the other way around.
Boring on purpose
Predictable deployments, observable systems, and architecture you can explain in a sentence.
Skin in the game
We stay accountable to the outcome, not just the deliverable.
Quiet excellence
We believe craftsmanship doesn't need to shout. The system is the proof.
// Timeline
Our path so far.
- 2018
Founded
Three engineers in Rotterdam set out to build software the way they always wished they could.
- 2020
Cloud practice
Launched dedicated cloud and platform engineering capability.
- 2022
Security practice
Added in-house cybersecurity team and incident response capability.
- 2024
European footprint
Engineers across seven EU countries, fully remote-first operations.
- 2026
Data & AI
Opened applied AI practice serving regulated industries.
// Operating principles
How we run a project.
- Weekly demos, never status decks.
- Production-shaped environments from week one.
- Pairing and code review across every contributor.
- Documentation written for the next engineer, not the auditor.
- On-call hygiene long before launch.
