Stefan Junker
DevOps Consultant at Numtide
Switzerland
Summary
🤩
Rockstar🎓
Top SchoolStefan Junker is a DevOps consultant and systems engineer with 12 years of experience building reliable, reproducible infrastructure and backend systems using Rust and Nix. He has driven production-grade automation and build improvements on notable open-source projects like Holochain, CNI, and the OpenShift installer, and helped bootstrap distributed NixOS fleets and workload orchestration for Holo.Host. Passionate about mitigating human error, he focuses on tooling and architectures that make complex deployments predictable, from static-linked build pipelines to CI-driven feature flags. He is an active open-source contributor with public repositories across GitHub, Codeberg and GitLab, and an interest in decentralizing the web through cryptographic guarantees and verifiable infrastructure.
12 years of coding experience
12 years of employment as a software developer
Master of Science - MSc Information Technology - Embedded and Mobile Systems, Master of Science - MSc Information Technology - Embedded and Mobile Systems at HTWG Hochschule Konstanz – Technik, Wirtschaft und Gestaltung
German, French, English
Stackoverflow
367reputation
26kreached
4answers
2questions
Github Skills (42)
kubernetes10
container10
docker10
cargo10
ip10
cni10
containerization10
dockers10
networking10
cicd10
plugin10
automation10
occi10
go10
openshift10
Programming languages (24)
Github contributions (5)
containernetworking/cni
May 2015 - Aug 2016
Container Network Interface - networking for Linux containers
Role in this project:
Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:141 commits, 115 PRs, 63 pushes in 1 year 3 months
Contributions summary:Stefan primarily contributed to the implementation and improvement of container network interface (CNI) plugins. They added a new ipvlan plugin and modified existing plugins to allow for more flexible IP address allocation and configuration. Furthermore, the user worked on improving the build and release processes by creating static releases and setting up an ACI.
containersnetwork-interfacenetworkinglinuxdocker
holochain/holochain
Oct 2020 - Jan 2023
The current, performant & industrial strength version of Holochain on Rust.
Role in this project:Back-end Developer & Automation Engineer
Back-end Developer & Automation EngineerContributions:19 releases, 573 reviews, 692 commits in 2 years 3 months
Contributions summary:Stefan primarily contributed to improving the build process and infrastructure of the Holochain project. Their work involved implementing features like feature flags in the build process to optimize and reduce effort. The user also refactored shell definitions for CI and added CI jobs to automate builds. Additionally, they addressed code issues and improved various compilation steps, making builds with test features more efficient.
rustdappsp2pblockchainweb3
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