Thomas Casteleyn
Software Engineer at Super-Visions
Aalter, East Flanders, Belgium
Summary
🤩
Rockstar🎓
Top SchoolThomas Casteleyn is a pragmatic software engineer with 15 years of experience building reliable back-end systems from Aalter, Belgium. Since 2014 he has been delivering production software at Super-Visions while contributing to high-profile open-source tooling like InfluxData’s Telegraf agent. His notable contributions to Telegraf include strengthening SNMPv3 authentication support, fixing subtle SNMP signedness and repetition bugs, and removing MIB dependencies to make the ifname processor more robust and parallel-safe. He combines an electronics/ICT bachelor’s background with hands-on protocol-level debugging, logging improvements, and data-format corrections that reduce operational surprises. Colleagues rely on him for practical fixes that improve observability and stability in metric-collection pipelines. He brings a steady, detail-oriented approach to systems integration and long-lived infrastructure code.
15 years of coding experience
Bachelor's degree, Elektronica - ICT, Bachelor's degree, Elektronica - ICT at Katholieke Hogeschool Brugge-Oostende
Dutch, English, French
Stackoverflow
63reputation
4kreached
6answers
1question
Github Skills (21)
snmp10
snmpd10
networking10
go10
metric9
telegraf8
debugging8
monitoring8
data-structures6
influxdb6
clickhouse6
ansible6
grafana6
linux6
selenium-ide6
Programming languages (29)
Github contributions (5)
influxdata/telegraf
Aug 2020 - Jan 2023
Agent for collecting, processing, aggregating, and writing metrics, logs, and other arbitrary data.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:1561 reviews, 60 commits, 90 PRs in 2 years 5 months
Contributions summary:Thomas contributed significantly to the Telegraf agent, focusing on enhancing the SNMP input plugin and related processors. Their work involved supporting new authentication protocols for SNMPv3, correcting issues related to signedness and max_repetitions, and improving error logging. Furthermore, the user implemented fixes and improvements for the ifname processor, including enhancing log messages, addressing parallelism issues, and eliminating MIB dependencies, as well as converting values to the correct format when using the displayhint option.
agentreportingcollectingagent-servertelegraf
Super-Visions/iTop
Mar 2019 - Aug 2022
A simple, web based IT Service Management tool
Contributions:23 commits, 1 PR, 350 pushes in 3 years 5 months
cmdbweb-basedservice-managementitsmmodular
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