Jussi Nummelin
Staff Engineer at Mirantis
Tampere, Pirkanmaa, Finland
Summary
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RockstarJussi Nummelin is a Staff Engineer based in Tampere, Finland with over 11 years of experience building and architecting cloud-native and distributed systems. He has progressed from hands-on software engineering roles into senior architecture and developer advocacy positions, now shaping platform and infrastructure work at Mirantis. Jussi contributed notable back-end and DevOps improvements to the open-source Kontena project, enhancing its CLI for multi-master setups and user management—demonstrating practical cross-cutting expertise in developer tooling and operations. His background spans telecommunications and enterprise software at companies like Nokia Siemens Networks, Tieto and Digia, giving him deep domain knowledge in large-scale, mission-critical systems. Known for blending pragmatic engineering with developer empathy, he often bridges product, platform and developer experience concerns. Colleagues rely on him for turning complex distributed-system requirements into maintainable, production-ready solutions.
11 years of coding experience
19 years of employment as a software developer
English, Finnish
Stackoverflow
16reputation
130reached
1answer
0questions
Github Skills (9)
command-line10
command-line-interface10
configuration-management10
cli10
ruby10
rspec9
docker8
json8
dockers8
Programming languages (13)
Github contributions (5)
kontena/kontena
Sep 2015 - Jul 2018
The developer friendly container and micro services platform. Works on any cloud, easy to setup, simple to use.
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:25 releases, 365 commits, 370 PRs in 2 years 10 months
Contributions summary:Jussi contributed significantly to the Kontena platform's command-line interface (CLI), adding support for multi-master configurations and managing settings related to server URLs, grids, and access tokens. They made changes to core components, including the CLI common library, to handle master server information and user login details. The user's work also involved modifying existing code and testing it in a test environment.
containersplatform-serviceseasy-clouddockersimple-to-use
jnummelin/k0s
Nov 2020 - Feb 2025
K0s
Contributions:1 release, 4 PRs, 309 pushes in 4 years 4 months
kubernetesk0s
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