Bart Kiers
Software Engineer at Big O Software
Rotterdam, South Holland, Netherlands
Summary
🤩
Rockstar🎓
Top SchoolBart Kiers is a seasoned software engineer based in Rotterdam with 18 years of experience building scalable backend systems, primarily in C# and Java. He has a long tenure at Big O Software and multiple stints at Q42, contributing to production-grade services across logistics and publishing domains. Bart is an active open-source contributor to the widely used antlr/grammars-v4 project, adding and improving grammars for languages like Python3, ECMAScript and SQLite—work that reflects deep expertise in parsing and language tooling. Known for pragmatic engineering and attention to detail, he balances maintaining legacy systems with evolving architectures to meet modern scalability needs. Colleagues rely on him to spot issues others miss (and he asks to be @-mentioned on GitHub issues), showing a hands-on, collaborative approach to problem solving.
17 years of coding experience
16 years of employment as a software developer
Leiden UniversityDelft University of Technology
Stackoverflow
168,229reputation
22.4mreached
2,567answers
14questions
swing
top-5%
grammar
top-1%
regex
top-1%
android
top-5%
recursion
top-5%
nested-loops
top-5%
Github Skills (59)
javascript10
python10
ide10
regex10
char10
java10
grammar10
lua10
php10
grammars10
latex10
parsing10
antlr10
comparator10
eclipse10
Programming languages (12)
Github contributions (5)
antlr/grammars-v4
Mar 2014 - Jan 2023
Grammars written for ANTLR v4; expectation that the grammars are free of actions.
Role in this project:
Backend Developer
Backend DeveloperContributions:8 reviews, 48 commits, 26 PRs in 8 years 11 months
Contributions summary:Bart contributed to the repository by adding grammars for various programming languages including IRI, PCRE, PGN, ICalendar, SQLite, ECMAScript, UCB Logo, Python3, and Velocity. They also updated existing grammars like PCRE by fixing issues and adding new features. The user's work primarily focused on expanding the project's capabilities by incorporating support for different languages and formats, demonstrating expertise in grammar development and parsing.
grammarparser-generatorabstract-syntax-treeexpectationgrammars
bkiers/python3-parser
Jun 2014 - Nov 2021
An ANTLR4 grammar for Python 3
Contributions:23 commits, 11 PRs, 8 pushes in 7 years 6 months
pythongrammarpython-3parser-generatorantlr4-grammar
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