Senior Platform Engineer
Railz
Software Engineering
London, UK
Position Type :
Full timeType Of Hire :
Experienced (relevant combo of work and education)Are you curious, motivated, and forward‑thinking?
At FIS, you’ll work on some of the most complex and impactful challenges in modern banking, helping build next‑generation, AI‑enabled platforms used by financial institutions worldwide. We foster an environment that values ownership, autonomy, and end‑to‑end responsibility, where engineers are encouraged to take initiative, make meaningful technical decisions, and ship solutions directly into production. We believe in open, collaborative, and ownership‑driven teams with a strong focus on real‑world impact.
About the team:
You will join a senior platform engineering team responsible for building and operating multi‑region Kubernetes infrastructure that powers an AI‑enabled banking platform used by Tier‑1 financial institutions.
What you will be doing:
Design, build and operate multi‑region Kubernetes platforms (EKS/GKE/AKS) for five‑nines workloads
Implement GitOps‑driven infrastructure using Terraform, Helm and Flux
Own reliability: disaster recovery, failover, backup/restore and resilience testing
Build secure, zero‑trust, multi‑tenant infrastructure for regulated environments
Develop and evolve observability stacks (Prometheus, Grafana, Loki, OpenTelemetry)
Support hybrid, on‑prem and air‑gapped deployments
What you bring:
Deep hands‑on Kubernetes platform experience (not just application deployment)
Strong understanding of multi‑cloud and hybrid networking fundamentals
Production experience with GitOps and Infrastructure as Code
Experience operating distributed systems in regulated environments
Strong ownership mindset and comfort shipping directly to production
Added bonus if you have:
Cilium and multi‑cluster networking experience
Kubernetes operators and CRD development
Go or Rust experience
AI‑driven SRE or automation experience
What we offer you:
A work environment built on collaboration, flexibility and respect
Competitive salary and attractive range of benefits designed to help support your lifestyle and wellbeing
Varied and challenging work to help you grow your technical skillset
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Sourcing Model
Recruitment at FIS works primarily on a direct sourcing model; a relatively small portion of our hiring is through recruitment agencies. FIS does not accept resumes from recruitment agencies which are not on the preferred supplier list and is not responsible for any related fees for resumes submitted to job postings, our employees, or any other part of our company.
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