Sebastiaan Van Steenis
Senior Site Reliability Engineer at Qdrant
Randstad, Netherlands
Summary
🤩
Rockstar🎓
Top SchoolSebastiaan Van Steenis is a Senior Site Reliability Engineer with 13 years of experience building automation-first tooling and reliable cloud-native infrastructure, currently at Qdrant. He cut his teeth as a Linux deployment engineer and evolved into a developer and SRE who improves developer velocity through CI/CD, self-service automation, and secure production practices. A long-time contributor to Rancher projects, he helped shape RKE and Rancher core components—adding TLS hardening, deployment robustness, and usability fixes across CLI, UI, charts and docs. He enjoys turning recurring support cases into automated fixes and product improvements, bridging support, engineering and documentation. Known for pragmatic problem solving, he blends deep systems knowledge (Linux, Docker, Kubernetes) with Go, Python and shell skills to ship durable solutions that reduce toil.
13 years of coding experience
16 years of employment as a software developer
Bachelor of Science (BSc) Information Technology, Bachelor of Science (BSc) Information Technology at Amsterdam University of Applied SciencesMBO4 ICT, MBO4 ICT at Koning Willem 1 College
Stackoverflow
26reputation
906reached
1answer
0questions
Github Skills (54)
kubernetes10
javascript10
docker10
python10
scripting10
configuration-management10
command-line-interface10
linux10
rancher10
ui-design10
dockers10
cicd10
uid10
script10
go10
Programming languages (16)
Github contributions (5)
rancher/rke
Nov 2017 - Dec 2022
Rancher Kubernetes Engine (RKE), an extremely simple, lightning fast Kubernetes distribution that runs entirely within containers.
Role in this project:
Backend Developer & DevOps Engineer
Backend Developer & DevOps EngineerContributions:133 reviews, 556 commits, 593 PRs in 5 years 1 month
Contributions summary:Sebastiaan contributed to the configuration and deployment of the Rancher Kubernetes Engine (RKE) project. They focused on modifying configuration files, including Kubernetes image specifications, network settings, and audit log configurations, enhancing the project's functionality. The contributions also involved improving infrastructure aspects, such as adding host connectivity checks, Docker version verification, and fine-tuning deployments, highlighting a mixed skillset.
containerslightningdockerrkerancher
rancher/install-docker
Jun 2017 - Aug 2022
Scripts for docker-machine to install a particular docker version
Role in this project:DevOps Engineer
DevOps EngineerContributions:39 reviews, 78 commits, 87 PRs in 5 years 2 months
Contributions summary:Sebastiaan's commits focus on enhancing the `rancher/install-docker` repository, which provides scripts for installing specific Docker versions. Their primary contribution involves adding support for various Debian distributions and updating scripts to accommodate different Docker versions. The changes include modifications to shell scripts, particularly those responsible for checking the operating system and installing the Docker engine. These modifications suggest a focus on ensuring the scripts' compatibility and functionality across a range of Linux environments.
docker-machineparticulardockerbuildkit
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