Wiljan Ruizendaal
Software Engineer at Ministerie van Defensie
Utrecht, Netherlands
Summary
👤
Senior🎓
Top SchoolWiljan Ruizendaal is a software engineer based in Utrecht with a decade of hands-on experience building reliable systems for both public sector and commercial clients. Since 2015 he has contributed engineering expertise at the Dutch Ministry of Defence, while more recently founding Codexe to take on freelance and entrepreneurial software projects. Trained in Computer Software Engineering at Hogeschool van Amsterdam, he blends disciplined engineering practices with a genuine obsession for crafting elegant solutions. Known for steady, long-term engagements, he brings institutional-grade rigor from defence work alongside the agility of a solo founder. Wiljan’s career shows a pattern of deep technical commitment rather than short-term pivots, signaling a developer who values mastery and practical impact.
10 years of coding experience
2 years of employment as a software developer
Bachelor's degree, Computer Software Engineering, Bachelor's degree, Computer Software Engineering at Hogeschool van Amsterdam
Github Skills (34)
realtime10
low-memory10
multithreading10
low-latency10
dotnet10
hashmap10
real-time-systems10
dictionary10
concurrent-collections10
collections10
simd10
realtime-database10
high-performance10
csharp10
game-development9
Programming languages (2)
Github contributions (5)
Wsm2110/Faster.Map
Nov 2021 - Jan 2023
Faster.Map — A high-performance SIMD-accelerated .NET dictionary and hashmap designed for extreme speed, scalability, and low memory overhead. Ideal for real-time systems and game engines.
Contributions:118 commits, 13 PRs, 277 pushes in 1 year 2 months
dotnetgame-enginehashmaplow-memoryreal-time-systems
Wsm2110/Wsm
Dec 2015 - Jan 2017
Contributions:18 pushes, 4 branches in 1 year 1 month
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