Description
Join Milestone and build infrastructure that feels like a product
Impact & Purpose
We are building a Linux-based software appliance that customers can install, upgrade, operate, and recover with confidence in real-world environments.
Some deployments will run on customer-controlled hardware. Some will be airgapped. Some will have limited or intermittent connectivity. Many will be operated by people who should not need to become Linux or Kubernetes experts to keep the system healthy.
This is not primarily a cloud platform role. You should be comfortable working below Kubernetes: Linux bootstrapping, system services, networking, storage, installation media, offline artifacts, upgrades, rollback, diagnostics, and recovery.
Kubernetes is part of the platform, but the hard part is making the whole appliance lifecycle reliable, repeatable, and supportable.
Location:
We are looking for a Senior Linux Appliance Engineer - Edge Platform, based in Barcelona, Spain (hybrid mode of working).
Role Summary
As a Senior Linux Appliance Engineer,



you will help design and build the foundation for a turnkey on-premise and edge platform used in hybrid, offline, and airgapped environments.
You will work across Linux, automation, container runtime, Kubernetes, installation flows, upgrade mechanisms, recovery paths, diagnostics, and operational tooling. The goal is not just to make infrastructure work once. The goal is to make it work predictably across many customer installations, hardware profiles, and lifecycle events.
This is a hands-on engineering role with strong technical ownership and influence on architecture, product quality, engineering standards, and long-term operability.
What You Will Do:
- Design and evolve a production-grade Linux software appliance for edge and on-premise deployments.
- Build reliable install, upgrade, rollback, factory reset, and recovery workflows.
- Work on Linux system configuration, bootstrapping, services, networking, storage, logging, h

📌 Senior Linux Appliance Engineer (Barcelona)
🏢 Milestone Systems
📍 Barcelona