Senior backend engineer
We are looking for an Backend engineer with strong skills in Java and Linux to our amazing client in Stockholm.
Intro
Continuous Integration (CI) is at the core of the developer experience. As engineering organizations grow and support multiple target platforms (backend, web, Android, iOS), Buildkite orchestrates CI workflows across diverse environments. In a context where flexibility is essential, the goal is to provide reliable, self-hosted, and scalable agent fleets with well-designed pipelines that enable engineering teams to deliver functionality with both speed and confidence.
This role focuses on building, maintaining, and evolving Buildkite agent infrastructure, pipeline tooling, and the overall developer experience, providing engineers with a streamlined, automated, fast, and secure build platform at scale.
What you'll do
Execute and evolve the Buildkite CI strategy, scaling agent pools and pipelines to support thousands of engineers running hundreds of thousands of builds daily—and beyond.
Manage and improve self-hosted Buildkite agent fleets across Linux, macOS, and Windows, ensuring they remain healthy, up to date, and cost-efficient.
Build and maintain Buildkite-powered infrastructure, pipeline templates, and shared libraries that standardize how teams define and execute builds.
Drive automation and improvements for agent provisioning, scaling, and lifecycle management across existing technology stacks.
Scale Buildkite infrastructure to support large monorepos with efficient pipeline splitting and artifact management.
Collaborate with cross-functional platform and engineering teams to design and deliver a best-in-class Buildkite-powered CI platform.
Help internal engineering teams adopt modern CI platform capabilities and migrate to improved workflows.
Must have:
Solid backend/software engineering background
Strong Java experience is a must
Strong Linux experience is a must
GCP is preferred, while AWS is good to have
Nice to have’s:
Buildkite
Docker
Kubernetes and Terraform
MacOS, and Windows scripting (Shell, PowerShell)
HTTP / Networking
Python
Ansible