Description

I help teams keep their backend services reliable, fast, and easy to maintain.

If your system is already running but:

APIs are becoming hard to maintain
issues take too long to debug
small changes feel risky

I can help bring clarity, stability, and performance back.

I’m a backend with experience working on high-scale distributed systems, handling thousands of requests per second. My focus is not just building new features, but making existing systems work better — reliably and simple without unnecessary complexity.

What I typically help with:

Maintaining and improving backend services (Kotlin/Java)
Debugging and resolving production issues
Refactoring and simplifying complex codebases
Designing and improving APIs

I’m used to working in environments where systems are already live and critical, and changes need to be safe, incremental, and well thought out.

I prefer part-time, long-term collaborations (20h/week, More or less is negotiable.) where I can support a team by improving stability, performance, and maintainability over time.

Industry field of expertise

Languages

English
Conversational

Workplace preferences

Can work on-site

Amsterdam (up to 50km)

bol.com
Lead Engineer
DIGITAL AND IT
June 2022 - Today (4 years)
Utrecht, Netherlands
Backend Engineer working on high-scale auction and advertising systems

I currently work on the design and development of auction-based systems powering sponsored product placements, handling thousands of requests per second in a production environment.

I have hands-on experience with:
Designing and maintaining backend services in Kotlin/Java
Working with large-scale data systems (including BigQuery)
Optimizing performance of APIs
Debugging complex production issues across distributed systems
Kotlin Google cloud Gemini code assit BigQuery Kubernetes
ERIKS Digital
Senior Platform Engineer
January 2021 - June 2022 (1 year and 5 months)
Amsterdam Metropolitan Area, Netherlands
• •Migrating Guided Selling monolith application to Microservice model.
• •Contributing on Search services and SSO projects.
HyperOffice
Java Developer and Technical lead
January 2018 - January 2021 (3 years)
• • Leading development team, Having regular meetings with our product owner to extract stories and defining sprints.
• • Selecting and testing core technologies of the application.
• • Developing framework of the application, Fixing memory leak and concurrency issues. Constantly reviewing the development process to address issues and applying the best practices