Staff Software Engineer (Java Libraries) in London

Imagine a Java ecosystem where builds are reproducible, dependencies are trustworthy, and the factory just hums.

We’re hiring a Staff Software Engineer for Chainguard’s Libraries organization, focused on the Java ecosystem. You’ll contribute to the technical direction for our Java libraries factory: secure, reliable, automated build and packaging pipelines that produce high-quality Java artifacts for customers and internal teams. This is an infrastructure-focused role. You’ll build systems and tooling used by many engineers, directly supporting Chainguard Libraries, one of our major product lines.

What You’ll Do

• Own architecture and direction for Java ecosystem infrastructure, enabling secure, reproducible build, test, and distribution workflows for Java libraries and SDKs.
• Design and maintain automation for building, updating, validating, and publishing Java artifacts, including vulnerability scanning, remediation, SBOMs, and provenance.
• Build internal developer tools (Gradle/Maven plugins, CLIs, code generators) that improve how we build and maintain Java packages at scale.
• Integrate deeply with Gradle and Maven and artifact repositories, solving complex dependency and module-resolution issues in large codebases and mono-repos.
• Collaborate with product and engineering leadership to shape the Java libraries roadmap and deliver on key business outcomes for Chainguard Libraries.
• Mentor and unblock other engineers through design reviews, documentation, and hands‑on debugging of build and infrastructure issues.
• Partner with Platform, Delivery, Sustaining, and Security to ensure Java pipelines and services meet reliability and security expectations.

Core Experience

• 8+ years working in Java or similar ecosystems on build systems, packaging, or developer tooling, ideally on platform/infra or ecosystem teams.
• Proven experience building and owning Gradle/Maven plugins, CI/CD automation, or internal frameworks/tools for Java libraries or services.
• Deep familiarity with Gradle and Maven for building and packaging libraries (multi-module builds, dependency graphs/BOMs, publishing to registries).
• Strong background in orchestrating large codebases or mono-repos and fixing dependency and build failures in production environments.
• Comfortable working with infrastructure code and tooling (e.g., Go-based systems, Terraform, CI/CD), alongside deep Java expertise.
• Demonstrated ability to debug toolchain, compiler, and packaging issues at scale and drive them to resolution.
• Experience with cloud-native environments: containers (Docker/OCI, Kubernetes), public cloud (GCP, AWS, or Azure), and modern CI/CD systems (e.g., GitHub Actions, Argo, Tekton, or similar).
• Excellent communication in a remote, distributed setup. Comfortable working across product, infra, and security, and mentoring peers at senior levels.
• A staff-level ownership mindset: you define direction, own critical outcomes, and thrive in an early, high-impact area where engineers help set the roadmap.

Nice to have

• Open source contributions in the Java ecosystem (libraries, build tools, packaging, or related infrastructure).
• Experience building and distributing widely used libraries, SDKs, or runtimes.
• Familiarity with software supply chain security: SLSA, SBOMs, sigstore, provenance, attestations.
• Prior work in SRE, platform engineering, or DevOps roles tied to Java, developer productivity, or CI/CD pipelines.
• Exposure to Linux distribution and packaging ecosystems or reproducible build systems (e.g., Alpine, Wolfi, Debian, Bazel, Nix).

About Us

Chainguard is the secure foundation for software development and deployment. By providing guarded open source software, built from source and updated continuously, Chainguard helps organizations eliminate threats in their software supply chains. Founded by the industry's leading experts on open source software, security and cloud native development, Chainguard has built the largest library of open source software that is secure by default. Chainguard’s mission is to be the safe source for open source.

We Live And Breathe Our Company Values

• We are customer obsessed - We focus on delivering solutions to our customers that create value and make their lives better.
• We have a bias for intentional action - We prioritize, plan, try things, and fail fast.
• We don’t take ourselves too seriously (but we do serious work) - We are solving an important problem which takes focus, but we also like to enjoy the journey.
• We trust each other and assume good intentions - We’re transparent with decisions to empower team members to make well informed decisions.

A Few Of The Benefits We Offer

• Flexible & Remote-First Culture: Work remotely with team meetup opportunities, bi-annual destination summits, and a monthly stipend for coworking spaces, phone and internet costs.
• Our Approach to Equity: Receive stock options upon hire and promotion. Plus, you can participate in secondary offerings and have 10 years to exercise your options (yes, you read that correctly: 10 years!).
• 100% Covered Health Insurance: We cover 100% of your health, vision and dental insurance premiums for you and your dependents. Nothing comes out of your paycheck.
• Flexible Time Off: Take the time you need – to do our best work, we need to recharge and reset.
• 18 Weeks Paid Parental Leave: We offer 18 weeks for birthing parents and 12 weeks for non-birthing parents, with the option to use it all at once or throughout your child's first year.

If your experience is close but doesn’t fulfill all requirements, please apply. We’re building the best team in technology and are focused on hiring “Chainguardians” with unique backgrounds, perspectives, and experiences.

Chainguard is an equal opportunity employer. We do not discriminate based upon race, religion, color, national origin, sex (including pregnancy, childbirth, reproductive health decisions, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, genetic information, political views or activity, or other applicable legally protected characteristics. We also consider qualified applicants with criminal histories, consistent with applicable federal, state and local law.

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