Staff Engineer — Performance, Reliability & AI Automation

Factorial Madrid, Spain Posted 17 Sept 2026

About this role

Hey there, Kubernetes people! ⚙ Every engineer here waits on CI several times a day. We want someone who finds that wait personally annoying. Why this role exists Hundreds of developers push to a large Ruby on Rails monorepo, and every push lands on a runner fleet that the Developer Experience team builds, runs and keeps fast. That fleet is self-hosted Kubernetes on bare metal in European datacentres, in the low hundreds of machines, running ephemeral GitHub Actions runners that peak above a th…

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