Description
Join Milestone and build infrastructure that feels like a product
Impact & Purpose
If you enjoy solving complex systems challenges while creating simple user experiences, we’d love to hear from you.
We are building a cohesive platform experience that customers can install, upgrade, and operate with confidence - without needing deep Kubernetes or Linux expertise.
Location:
We are looking for a Senior Infrastructure Engineer (Linux & Platform), based in Barcelona, Spain (hybrid mode of working).
Role Summary
As a Senior Infrastructure Engineer (Linux & Platform), you will design and build a turnkey on-prem platform used in on-premisses, hybrid and air-gapped environments.
You will focus on reliability, automation, lifecycle management, and operational simplicity - turning complex infrastructure into a seamless product experience. While the platform leverages Kubernetes, this role is Linux and systems-first, with Kubernetes as one part of the broader stack.
This is a hands-on engineering role with strong technical ownership and influence on architecture, quality,



and engineering standards.
What You Will Do:
- Design and evolve a production-grade software appliance
- Build reliable install, upgrade, rollback, and recovery workflows
- Create automation and guardrails that simplify operations
- Develop backend services and APIs (REST, gRPC, OpenAPI)
- Improve observability, resiliency, and operational safety
- Support air-gapped deployments and offline upgrades
- Collaborate with product, support, and customer-facing teams
- Help shape engineering practices and technical direction

What You Bring to the Team:
We are looking for a strong generalist engineer with deep experience in Linux systems and production environments, and some exposure to Kubernetes and container platforms. If your background aligns with many of the areas below, we encourage you to apply.
- Strong software engineering experience in backend, systems, or infrastructure development
- Deep han

📌 Senior Infrastructure Engineer (Barcelona)
🏢 Milestone Systems
📍 Barcelona