Infrastructure Platform Engineer - CI/Build Systems at Scale

DeepCamp; City Of London; Hybrid; GBP 85,000 - 135,000; Full time

Benefits offered by this job

Competitive salary

Equity

Private Medical

Dental and Vision

Contributory Pension

25 Days holiday

Job summary

Fractile is seeking an Infrastructure Platform Engineer to join our core tech team. You will own the CI infrastructure end-to-end, build observability and incident workflows, and manage infrastructure as code for hybrid cloud and on‑prem resources.

You will scale a Bazel monorepo across Python, C++, Rust, SystemVerilog and ML workloads, shaping the platform experience for every engineer. You bring 5+ years in software/infrastructure, hands-on CI/CD for large-scale products, and strong scripting

Qualifications

• 5+ years in software, platform, or infrastructure engineering.
• 5+ years hands-on experience with CI/CD for large-scale products, including monitoring and debugging pipeline failures at scale.
• 3+ years working with build systems (e.g., Bazel, Buck, Pants).
• Experience with infrastructure as code (Terraform/OpenTofu, or Pulumi).
• Experience with monitoring/observability tools (Prometheus, Grafana).
• DevOps/SRE principles: SLOs, alerting design, incident management, on-call practice.
• Strong proficiency in at least one systems or scripting language (Python preferred; Go or Rust also relevant).

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.
• Own 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 across Python, C++, Rust, SystemVerilog, and ML workloads.
• Shape the infrastructure and platform experience for every engineer at Fractile.

Skills

Software engineering

CI/CD

Build systems

Infrastructure as code

Monitoring

DevOps/SRE

Python

Go/Rust

Job description

Fractile is seeking an Infrastructure Platform Engineer to join our core tech team. You will own the CI infrastructure end-to-end, build observability and incident workflows, and manage infrastructure as code for hybrid cloud and on‑prem resources.

You will scale a Bazel monorepo across Python, C++, Rust, SystemVerilog and ML workloads, shaping the platform experience for every engineer. You bring 5+ years in software/infrastructure, hands-on CI/CD for large-scale products, and strong scripting