Infra Platform Engineer: Build Systems, CI & Observability

NIF; Greater London; Hybrid; GBP 110,000 - 150,000; Full time

Benefits offered by this job

Competitive salary

Equity

Private medical

Pension + holidays

Inclusive culture

Job summary

Fractile is seeking an Infrastructure Platform Engineer to join our Software organization on cutting-edge AI hardware projects. You will work across hardware design, verification, kernel drivers, and ML compilers to enable reliable, scalable infrastructure for our inference systems.

You will own CI/CD pipelines, build systems, and infrastructure as code, shaping the experience for every Fractile engineer while upholding an SRE mindset and strong engineering discipline.

Qualifications

• 5+ years in software, platform, or infrastructure engineering.
• 5+ years hands-on experience with CI/CD at scale, incl. monitoring and debugging.
• 3+ years with modern cross-language build systems (Bazel, Buck, Pants, Please).
• Experience with infrastructure as code tools (Terraform/OpenTofu, Pulumi).
• Experience with monitoring/observability tooling (Prometheus, Grafana).
• DevOps/SRE practices: SLOs, incident management, on-call.

Responsibilities

• 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.
• Own our infrastructure as code, automating provisioning of hybrid cloud and on-prem resources from a single source of truth.
• 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.

Skills

CI/CD for large-scale products

Build systems expertise

SRE / DevOps principles

Programming in Python/Go/Rust

Observability mindset

Tools

Bazel

Buck

Pants

Please

Terraform

OpenTofu

Pulumi

Prometheus

Grafana

Job description

Fractile is seeking an Infrastructure Platform Engineer to join our Software organization on cutting-edge AI hardware projects. You will work across hardware design, verification, kernel drivers, and ML compilers to enable reliable, scalable infrastructure for our inference systems.

You will own CI/CD pipelines, build systems, and infrastructure as code, shaping the experience for every Fractile engineer while upholding an SRE mindset and strong engineering discipline.