Jef Verelst
Co-Founder And Software Developer at LiLo
Berlaar, Antwerp, Belgium
Summary
👤
Senior🎓
Top SchoolJef Verelst is a co-founder and software developer with 11 years of experience building solutions in the translation and localization industry and a background in software development from Katholieke Hogeschool Leuven. He progressed from junior developer to business analyst and co-founder, combining hands-on backend engineering with solution architecture and product-oriented thinking. Jef has practical open-source experience improving monitoring tooling—enhancing Diamond’s OpenTSDB handler and adding robust unit tests to ensure correct tag and metric handling. Based in Berlaar, Belgium, he blends entrepreneurial initiative with deep operational knowledge of system metrics, CPU/network/iostat and diskspace collectors. His profile reflects a pragmatic engineer who turns complex integration needs into reliable, testable systems.
11 years of coding experience
5 years of employment as a software developer
Bachelor, Software development, Bachelor, Software development at Katholieke Hogeschool Leuven
Github Skills (6)
opentsdb10
unit-testing10
python10
test-automation10
configuration-management9
hbase4
Programming languages (5)
Github contributions (5)
python-diamond/Diamond
Aug 2016 - Oct 2016
Diamond is a python daemon that collects system metrics and publishes them to Graphite (and others). It is capable of collecting cpu, memory, network, i/o, load and disk metrics. Additionally, it features an API for implementing custom collectors for gathering metrics from almost any source.
Role in this project:
Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:15 commits, 3 PRs, 9 comments in 1 month
Contributions summary:Jef significantly enhanced the OpenTSDB handler within the Diamond project, adding features to handle tags correctly. They implemented unit tests using the `mock` and `unittest` libraries to check the tag parsing and metric processing behavior. The user's contributions included improving the handling of CPU, network, iostat, and diskspace metrics and correcting the overall structure for handling tag settings.
memorypythonprometheusdiamondmonitoring
kullervo16/bookstats
Mar 2016 - Jul 2021
Statistics application for my books
Contributions:5 pushes in 5 years 4 months
statisticscensus
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