Tom Vijlbrief
Senior IT Architect at Kadaster
Randstad, Netherlands
Summary
👤
Senior🎓
Top SchoolTom Vijlbrief is a senior IT architect with 14+ years of experience designing large-scale geospatial and cadastral systems, currently shaping SOA-based cadastral applications and XML/GML data delivery at Kadaster. He combines an academic foundation in distributed OS monitoring from the University of Amsterdam with practical work on human/machine interfaces and command-and-control simulations at TNO. His expertise spans system architecture, PostGIS-backed databases and internet portals, and he has published GIS research and implemented standards-driven solutions for national and European datasets. An active open-source contributor, he has improved QGIS PostGIS integration and optimized performance-critical C++ projects like Stockfish, demonstrating attention to database concurrency and low-level performance tuning. Based in the Randstad, he blends hardware curiosity (microcontrollers, ARM/AVR/RISC-V and FPGAs) with deep software and standards knowledge, an uncommon cross-domain mix that informs pragmatic architectural choices.
14 years of coding experience
10 years of employment as a software developer
Msc, computer science, Msc, computer science at University of Amsterdam
English, Dutch, German
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (15)
algorithm10
data-structures10
algorithms10
database-management10
c-language10
postgresql10
cprogramming-language10
performance-optimization10
data-structure10
chess-engine10
qgis9
postgis9
sql8
boost7
raii7
Programming languages (13)
Github contributions (5)
mcostalba/Stockfish
Oct 2011 - Feb 2018
UCI chess engine
Role in this project:
Back-end Developer / Performance Engineer
Back-end Developer / Performance EngineerContributions:9 commits, 1 PR, 13 comments in 6 years 5 months
Contributions summary:Tom focused on optimizing the Stockfish chess engine by improving its evaluation and search algorithms. Their contributions involved refactoring and removing unused code, particularly related to material evaluation and trapped rook handling, to increase speed. The user also implemented and refined features like pawn shield and storm calculations, and added bonuses for pawn placement relative to knights and bishops. Furthermore, they addressed and fixed critical bugs related to the program's stability.
chess-engineuci-chess-enginemachine-learninguci
qgis/QGIS
Nov 2015 - Dec 2020
QGIS is a free, open source, cross platform (lin/win/mac) geographical information system (GIS)
Role in this project:Back-end Developer & Database Engineer
Back-end Developer & Database EngineerContributions:7 reviews, 16 commits, 16 PRs in 5 years 1 month
Contributions summary:Tom primarily contributed to the back-end of the QGIS project, focusing on improvements to the PostGIS data provider. Their work included fixing issues related to PostGIS versions, optimizing the retrieval of layer types, and preventing deadlocks in database connection handling. They also implemented RAII-style resource management using `QgsPoolPostgresConn` and made updates to utilize `std::make_shared()`.
spatiallinwmsgeotoolsgis
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