Tuomo Tanskanen
Principal Security Developer, Ericsson Software Technology at Tuminoid Solutions
Nummela, Finland
Summary
👤
Senior🎓
Top SchoolTuomo Tanskanen is a Principal Security Developer at Ericsson Software Technology with 12+ years of experience securing telecom and cloud-native systems. He leads security for Metal3.io, a CNCF incubating project, and ranks among the top 20 CNCF contributors over the past few years, combining open-source stewardship with pragmatic secure-by-design engineering. His background spans Nokia, Huawei and Ericsson roles from low-level OS and build systems to Kubernetes, CI/CD and vulnerability management platforms that still underpin Ericsson’s PSIRT workflows. Tuomo is hands-on in improving build and test infra, dependency pinning and pipeline hardening, and routinely drives security feature work across CNCF and OpenSSF initiatives. Known for a no-nonsense Finnish Sisu, he blends rapid delivery with durable security practices and a knack for turning messy legacy tooling into auditable, automatable systems. Outside work he balances netsec and DevOps interests with photography and disc golf, reflecting a practical, curious mindset.
12 years of coding experience
14 years of employment as a software developer
Master's Degree, Computer Science and Engineering, Master's Degree, Computer Science and Engineering at Teknillinen korkeakoulu-Tekniska högskolan
Github Skills (11)
kubernetes10
docker10
dockers10
cicd10
kubernetes-pods10
scripting9
bash9
shell9
script9
sh9
go8
Programming languages (12)
Github contributions (5)
metal3-io/baremetal-operator
Nov 2022 - Jan 2023
Bare metal host provisioning integration for Kubernetes
Role in this project:
DevOps Engineer
DevOps EngineerContributions:707 reviews, 10 commits, 149 PRs in 1 month
Contributions summary:Tuomo's contributions primarily focus on improving the build and testing infrastructure of the project. They updated the build scripts to pin specific versions and digests of various tools, like `markdownlint`, `shellcheck`, and `kubeconform`. Additionally, they consistently used `docker.io` as the image registry, further streamlining the build process and improving dependency management. They also addressed security vulnerabilities in dependencies.
bare-metalprovisioningmetalhostkubernetes
metal3-io/community
Dec 2023 - Mar 2025
Metal3-io governance material.
Contributions:36 reviews, 9 PRs, 92 comments in 1 year 3 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.