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. 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. We are looking for a Senior Linux Appliance Engineer - Edge Platform, based in Barcelona, Spain (hybrid mode of working).

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 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. Design and evolve a production‐grade Linux software appliance for edge and on‐premise deployments. Work on Linux system configuration, bootstrapping, services, networking, storage, logging, hardening, and troubleshooting.

Support offline and airgapped operation, including artifact packaging, local registries, dependency handling, and upgrade bundles.



Help define the boundary between the host OS, Kubernetes, platform services, and application workloads. Create automation and guardrails that reduce manual operations and make customer installations supportable.

Shape engineering practices around reliability, lifecycle management, testing, release quality, and operational safety. We are looking for a strong systems engineer with deep hands‐on experience in Linux and production environments: Linux systems in production, including troubleshooting, networking, storage, logs, security hardening, and performance. Building or maintaining systems that run outside normal cloud environments, such as appliances, edge systems, industrial systems, embedded Linux devices, on‐prem platforms, or customer‐managed infrastructure.

Installation, provisioning, patching, upgrade, rollback, backup, recovery, or lifecycle automation. Automation using tools such as Ansible, Bash, Python, Go, Terraform, Ignition, Kickstart, preseed, or similar. Containers and container runtimes such as Docker.

Practical

Kubernetes experience, especially around node behavior, networking, storage, resource usage, observability, and troubleshooting. Working with restricted or offline environments, including local package mirrors, registries, signed artifacts, version manifests, or dependency bundles. Access to training, learning resources, and certification Adaptable working arrangements Social activities and spaces to connect with colleagues Luxury health and dental package Milestone Systems is a leading provider of data‐driven video technology software.

Our portfolio includes XProtect video management software, Arcules video surveillance as a service, and BriefCam analytics. We amplify what organizations of any size can see, do, and achieve with video.

📌 Senior Linux System Administrator, hibrido (Barcelona)
🏢 Milestone Systems
📍 Barcelona