eirik breen — oslo

Resume

Eirik Breen

Systems Consultant · Oslo, Norway

Linux specialist with more than five years in system operations, platform work, and infrastructure. RHEL, Kubernetes (K3s/MKS), GitOps with Argo CD, secrets with OpenBao/Vault, and automation with Ansible. A lot of that in PCI DSS environments. I use Claude Code and OpenCode in the daily work, and I care about agent workflows, MCP servers, and making AI infrastructure actually usable.

Career

Professional experience

  1. Systems Consultant, Service Delivery

    Orange Business (Basefarm) Oslo

    • Design and run Kubernetes clusters (K3s/MKS) for enterprise customers, with GitOps through Argo CD, Cilium networking, and secrets in OpenBao/Vault.
    • Day-to-day operations of customer infrastructure on RHEL, with an eye on scale, security, and performance.
    • Build and maintain PCI DSS-compliant Linux environments, including successful security audits.
    • Log analysis and monitoring with Splunk and Elastic Stack for troubleshooting and capacity planning.
    • Automate configuration and deployment with Ansible and CI/CD pipelines.
    • Project lead for an HSM customer, implementing redundant Thales solutions across data centres.

    Daily stack RHEL, Kubernetes (K3s, MKS), Argo CD, Cilium, OpenBao / Vault, Ansible, Splunk, Elastic Stack, Thales HSM

  2. Senior Operations Technician, Operations Center

    Orange Business (Basefarm) Oslo

    • Operated and maintained customer servers and systems on the Incident team, mainly RHEL and Azure.
    • Planned and carried out changes: firewall and proxy openings, certificate installs, and patching.
    • Senior on a rotating roster covering day, evening, night, and weekend shifts.
    • Mentored apprentices through their trade exam, and supervised intern students (Dec 2021–Dec 2022).

    Daily stack RHEL, Azure, Incident management, Change management

  3. ICT Operations Engineer

    HDO — Helsetjenestens Driftsorganisasjon Gjøvik

    • Two years as an ICT apprentice, then six months on contract after completing the trade certificate.
    • 1st and 2nd line support for emergency-network customers: AMK centres, out-of-hours clinics, and A&E.
    • Rolled out security updates to customers, both remotely and on site.

    Daily stack Nødnett, 1st / 2nd line, Patching

Education

Education

  1. Trade certificate, ICT Service Worker

    HDO — Innlandet County Municipality Gjøvik

    Passed with distinction (Meget godt bestått).

  2. ICT with general university admissions

    Gjøvik Upper Secondary School Gjøvik

    Information and communication technology, three-year programme.

The stack

What I work with

Linux & operations

  • RHEL
  • Bash
  • Python
  • Performance tuning
  • Complex troubleshooting

Containers & orchestration

  • Kubernetes (K3s/MKS)
  • GitOps / Argo CD
  • Cilium
  • OpenBao / Vault

Automation & IaC

  • Ansible
  • Infrastructure as code
  • Jenkins
  • Azure DevOps
  • Git / GitLab / GitHub

Security & compliance

  • PCI DSS
  • Hardening
  • Patch management
  • Thales PayShield / Luna
  • Key ceremony

Logging & monitoring

  • Splunk
  • Wazuh
  • Elastic Stack
  • Alerting
  • Capacity planning

Cloud & virtualisation

  • Azure
  • AWS
  • Hybrid infrastructure

AI & tooling

  • Claude Code
  • OpenCode
  • MCP servers
  • Agent workflows
  • LM Studio / llama.cpp

Selected work

After-hours tools

A few personal projects that show how I like to build. The full list is on the made page.

  1. 01

    ModelTable

    Live LLM prices. First-party catalogs scrape every 15 minutes, marketplace lists every 5. One Cloudflare Worker, KV, edge cache. Three JS files, zero runtime npm, no build.

  2. 02

    PixelWitness

    A Chrome extension that scores images on a page for likely AI generation. Decoding, three local models, and metadata checks all run in the browser, so the image never leaves the machine.

  3. 03

    Parrot for Windows

    Push-to-talk dictation that stays on the computer. Hold a key, speak, release, and it types where the cursor is. Transcription is local, with CUDA or Vulkan when a GPU is there, and CPU if not.

  4. 04

    Shield AirPlay

    An AirPlay receiver for NVIDIA Shield and Android TV without ads, accounts, or analytics. Screen mirroring, HLS video, and local audio. GPLv3, based on android-airplay-server / UxPlay.

See everything I made

eirikbreen.com

Contact

Get in touch

Best reached by email. LinkedIn is there if you prefer that route.