John Hendrikx
Senior Software Engineer at Hendrikx Software
The Hague, South Holland, Netherlands
Summary
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Rockstar🎓
Top SchoolJohn Hendrikx is a Senior Software Engineer and freelance Java specialist with 14 years of professional experience and over 20 years working with Java and systems-level engineering. Based in The Hague, he combines deep expertise in OOP, algorithms, data compression, filesystems and performance/memory optimization with hands-on experience building high-throughput Java back-ends and APIs that serve millions of requests daily. He has led technical rebuilds and delivered production-grade systems across industries—from aviation at KLM and traffic control at Rijkswaterstaat to game physics at Amazon Game Studios—bringing both architectural vision and low-level tuning skills. As owner of Hendrikx Software and now a senior engineer at Axoniq, he blends consultancy agility with enterprise delivery, often tackling networking, Linux and storage challenges that others avoid. A practical problem-solver, he pairs long-term systems design thinking with a track record of squeezing predictable performance from complex Java stacks.
15 years of coding experience
24 years of employment as a software developer
Rotterdam University of Applied Sciences
Dutch, English, German
Stackoverflow
7,931reputation
2.0mreached
270answers
20questions
javafx
top-5%
jackson
top-5%
java
top-1%
spring
top-5%
junit
top-5%
json
top-5%
Github Skills (200)
testing10
windows10
di-framework10
test-framework10
databinding10
openjdk10
junit10
image-generation10
inpainting10
openjfx10
microservices10
cqrs10
linux10
spring-mvc10
rabbitmq10
Programming languages (9)
Github contributions (5)
hjohn/MediaSystem
Aug 2011 - Jun 2016
Entertainment center for searching and viewing your video collection. It will fetch metadata and subtitles from external sources and can be controlled by remote. The GUI is written using JavaFX and video playback uses VLC through vlcj.
Contributions:1243 commits, 3 pushes in 4 years 10 months
javafxvlcvlcj
hjohn/hs.jfx.eventstream
Nov 2020 - Apr 2021
Light-weight Streams for JavaFX
Contributions:7 releases, 79 commits, 2 PRs in 5 months
javafx
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