Jeroen Fiege

Jeroen Fiege

Freelance senior software engineer living near Rotterdam, currently available for new projects.

Most recently, I worked as a senior software engineer at On That Ass, refactoring legacy backend code and introducing structured processes like RFCs, ADRs, and Event Storming to improve team efficiency. Before that, I was contracted by Logius, contributing to the Dutch government’s digital platform MijnOverheid.nl, including its migration to a Kubernetes-based private cloud.

Previously, I worked in Fintech as a senior software engineer at Ginger Payments, where I developed and maintained microservices in Python and PHP, improved onboarding processes, and introduced ADRs for better architectural documentation.

I'm passionate about software engineering, product development, technology and team leadership.

Find me online
Github, LinkedIn, Twitter, StackOverflow, Indie Hackers

Projects

Strateamic SaaS product that helps teams to be more effective using structured 1:1 meetings. strateamic.com Infinite Ajax Scroll JavaScript plugin to create engaging paginations infiniteajaxscroll.com Domain Driven Design & Event Sourcing Collection of ddd, cqrs and event sourcing implementations in PHP github.com Machine learning algorithms in PHP ML algorithms that I implemented as a learning exercise github.com