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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Infrastructure Software Engineering - Platform & Build - **Company:** Fractile - **Location:** London, UK - **Experience:** Experienced - **Contract:** Permanent contract - **Skills:** Artificial Intelligence, C++ (Programming Language), Compilers, Continuous Integration, Software Debugging, DevOps, Programming Tools, Device Drivers, Firmware, Hardware Design, Python (Programming Language), Linux Kernel, Machine Learning, Release Management, Prometheus, Software Systems, SystemVerilog, Software Organization, Rust (Programming Language), Pulumi, Scripting, Grafana, Build Tools, Hardware Acceleration, Terraform - **Published:** September 12, 2026 - **Apply:** https://startup.jobs/infrastructure-software-engineering-platform-build-1-fractile-10011838 ## About the Role You bring deep infrastructure and build systems expertise alongside an SRE mindset. You are systematic in how you approach fault isolation and root cause analysis, and you apply metrics-driven thinking to build reliability and developer productivity. You thrive on variety (ML, compilers, kernel drivers, simulators, hardware verification) and you understand that your work becomes the foundation every engineer at Fractile builds on. You take that responsibility seriously. Key Requirements * 5+ years in software, platform, or infrastructure engineering * 5+ years hands-on experience working with CI/CD for large-scale products, including monitoring, debugging performance and resolving pipeline failures at scale * 3+ years working with build systems, preferably modern cross-language build systems with an emphasis on correctness, high performance and extensibility, such as Bazel, Buck, Pants, Please, etc. * Experience with infrastructure as code (Terraform, OpenTofu, or Pulumi) * Experience with monitoring and observability tooling (Prometheus, Grafana, or similar) * Working knowledge and practice of DevOps / SRE principles: SLOs, alerting design, incident management, and on-call practice * Strong proficiency in at least one systems or scripting language used for tooling (Python preferred; Go or Rust also relevant), with a track record of shipping well-tested, maintainable developer tooling that other engineers rely on: CLIs, CI integrations, build and release automation ## Description As an Infrastructure Platform Engineer you will be a core part of our technical team working alongside the hardware, software and research teams to solve cutting-edge problems in AI hardware, ranging from verification to simulation, alongside the best of the best (DeepMind, Apple, Meta…). About the Software organisation at Fractile Infrastructure sits within the Software organisation at Fractile, which is responsible for developing a full software stack for our groundbreaking AI inference systems. That's everything from ML compilers, device drivers and systems firmware, application level runtime and ecosystem integrations, ML and compute libraries, great developer tooling and a full portfolio of simulators, through to datacenter scale workload deployment solutions. At Fractile, we know that a fantastic software stack is a critical and central part of any AI inference solution and it sits at the heart of everything we're doing. About the team and role The Infrastructure team is responsible for the core platform and systems at Fractile. We build, scale, and optimize the mission-critical systems that power our entire engineering org, including our multi-language Bazel monorepo and CI pipelines. From hardware design and verification to kernel development and ML compilers, we enable all Fractile engineers to ship fast and reliably. The team brings both deep build system expertise and an SRE mindset: reliability, build performance, debugging CI failures systematically, and giving the engineering organisation clear visibility into how our infrastructure is performing. As an Infrastructure Platform Engineer, you will: * Own the CI infrastructure end-to-end: create, maintain and debug reproducible multi-language CI pipelines, and optimize CI performance across large compute clusters. * Build and maintain infrastructure observability, alerting, runbooks, and incident response workflows for Fractile's infrastructure. * IaC TODO * Scale and maintain Fractile's Bazel monorepo as we continue growing across Python, C++, Rust, SystemVerilog, and ML workloads. * Shape the infrastructure and platform experience for every engineer at Fractile. ## Related Videos - [Platform Engineering vs. DevOps Why not both?](https://www.wearedevelopers.com/videos/885-platform-engineering-vs-devops-why-not-both) - [From DevOps to Scaled DevOps: How We’re Rebuilding Continuous Delivery as a Platform](https://www.wearedevelopers.com/videos/100018-from-devops-to-scaled-devops-how-we-re-rebuilding-continuous-delivery-as-a-platform) - [Why segmenting your infrastructure into tiers makes your infrastructure design better](https://www.wearedevelopers.com/videos/1960-why-segmenting-your-infrastructure-into-tiers-makes-your-infrastructure-design-better) - [5 steps for running a Kubernetes environment at scale](https://www.wearedevelopers.com/videos/88-5-steps-for-running-a-kubernetes-environment-at-scale) - [Unleashing Potential Across Teams: The Power of Infrastructure as Code](https://www.wearedevelopers.com/videos/930-unleashing-potential-across-teams-the-power-of-infrastructure-as-code) - [#90DaysOfDevOps - The DevOps Learning Journey](https://www.wearedevelopers.com/videos/548-90daysofdevops-the-devops-learning-journey) ## Related Articles - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs) - [Now is the time for industrialized software development](https://www.wearedevelopers.com/magazine/601-now-is-the-time-for-industrialized-software-development)