Platform Engineer - Build & CI

Humanoid; Greater London; On-site; GBP 60,000 - 80,000; Full time

Benefits offered by this job

23 days annual leave

Fully funded private healthcare

Equity participation

Pension scheme with 8% total contribution

Free daily meals

Job summary

Humanoid is seeking a Software Engineer to lead the build system and CI infrastructure critical for robot development. This technical role involves maintaining CI pipelines, managing the remote build cache, and improving developer experiences.

Ideal candidates will have strong experience with build systems like Bazel or CMake and familiarity with CI pipeline design at scale. The role offers a collaborative environment with significant investment in employee well-being and professional growth.

Qualifications

• Solid experience with build systems and CI pipelines.
• Comfort debugging complex build failures across multiple languages.
• Experience with dependency management and the tradeoffs between reproducibility, speed, and risk.

Responsibilities

• Build and maintain CI pipelines in GitHub Actions.
• Define and enforce policies to keep main green.
• Own and maintain remote build cache infrastructure.

Skills

Experience with build systems (e.g., Bazel, CMake)

CI pipeline design and operation

Understanding of hermetic build environments

Debugging complex build failures

Dependency management experience

Instincts for developer experience

Tools

GitHub Actions

Kubernetes

ROS/ROS2 tooling

Job description

Here at Humanoid, we believe in a future where robots amplify human potential. That’s why we’ve set out on a mission to build the world’s most capable, commercially-scalable, and safe humanoid robots. We’re bringing that mission to life with HMND‑01 Alpha - our rapidly developed humanoid platform now running in real industrial pilots - and we’re growing the team to take it even further.

About The Role

We are looking for a Software Engineer to own the build system and CI infrastructure that every engineer at Humanoid depends on every day. This is foundational work: a slow, unreliable, or opaque build pipeline is a tax on the entire engineering organisation, and getting it right directly determines how fast we can ship robots.

We are investing heavily in build infrastructure - hermetic, incremental, fully cached builds across a complex multi-target monorepo spanning firmware, robot software, simulation, and cloud - and we need someone to drive that work and own the system it produces.

This is a deeply technical infrastructure role. You will work closely with every engineering team in the organisation, and the quality of your work will be felt by every person who opens a PR.

What You’ll Do

• Build and maintain CI pipelines in GitHub Actions: incremental test selection based on affected targets, nightly full builds, and clear triage tooling when main goes red
• Instrument the build: CI telemetry, dashboards showing build and test times broken down by job type, branch, and author — so we stop flying blind on build health
• Define and enforce the policies that keep main green: merge queue configuration, PR gating, and the on-call process when broken builds block other engineers
• Own and maintain the remote build cache infrastructure, ensuring cache correctness, invalidation on environment changes, and read-only promotion from main only
• Own the developer environment story — local builds, dependency management, and the tooling that lets engineers iterate quickly without fighting their environment
• Maintain and evolve the dependency mirroring infrastructure (apt, PyPI, and other upstream registries) so that external package availability never blocks a build

What We’re Looking For

• Solid experience with build systems - ideally Bazel, but deep knowledge of CMake or similar is fine; the instincts matter more than the specific tool
• Experience designing and operating CI pipelines at scale: incremental testing, artifact caching, runner management, and keeping feedback loops short
• Strong understanding of hermetic build environments
• Comfort debugging complex build failures across multiple languages and toolchains
• Experience with dependency management and the tradeoffs between reproducibility, speed, and upstream risk
• Good instincts for developer experience

Nice To Have

• Familiarity with ROS/ROS2 build tooling (colcon, ament, CMake)
• Familiarity with Kubernetes: self-hosted runners, ARC
• Experience with GitHub Actions at scale
• Background in robotics or embedded systems where build artifacts span multiple target architectures and deployment environments

What We Offer

• Meaningful time off to rest and recharge: 23 days of annual leave (accrued), 15 days of paid sick leave, and paid company holidays.
• Fully funded private healthcare for UK employees, with broad provider access, virtual and in‑person care, and strong mental health and serious illness support.
• Equity included–we believe builders should share in what they build.
• Pension scheme with a total 8% contribution (5% employee, 3% employer) on full earnings.
• Free daily breakfast, catered lunch, and snacks in‑office.
• Collaboration with top‑tier engineers, researchers, and product experts in AI and robotics.
• Freedom to influence the product and own key initiatives.