Koen van Staveren
Student at Windesheim
Zwolle, Overijssel, Netherlands
Summary
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RockstarKoen van Staveren is an experienced software engineer and HBO-ICT student based in Zwolle with a decade of hands-on development experience. He contributes actively to open-source projects, notably as a full-stack developer on actualbudget/actual where he improved TypeScript types, CSV import deduplication, and added E2E tests and templating actions for rules. Comfortable across front-end and back-end concerns, he demonstrates a pragmatic focus on data handling, reliability, and developer-facing tooling. An Advent of Code grinder, he brings a penchant for algorithmic problem solving and incremental improvement to real-world applications. Practical, curious, and collaborative, he blends academic learning with substantial community-driven engineering work.
10 years of coding experience
Stackoverflow
1,036reputation
42kreached
24answers
3questions
Github Skills (24)
javascript10
csv-import10
typescript10
rule-engine10
typescript-types10
engine10
typescripts10
react10
testing9
e2e-test9
handlebars9
e2e-testing9
nuxt9
e2e9
finance8
Programming languages (9)
Github contributions (5)
actualbudget/actual
Aug 2024 - Mar 2025
A local-first personal finance app
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:91 reviews, 58 PRs, 51 pushes in 6 months
Contributions summary:Koen made significant contributions to the "actualbudget/actual" project, a personal finance application. Their work involved fixing TypeScript types and addressing CSV import deduplication issues, indicating a focus on backend and data handling. Further contributions included implementing end-to-end (E2E) tests for CSV import and adding templating actions for rules, demonstrating skills in both frontend and backend development, including rule customization. They also worked on various bug fixes and feature enhancements across the codebase.
financelaravellocal-firstpersonal-financebudgeting
UnderKoen/bsm
Jun 2023 - Mar 2025
Contributions:2 PRs, 76 pushes, 10 branches in 1 year 9 months
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