Senior/Staff Platform Engineer

FIS; Greater London; On-site; GBP 120,000 - 150,000; Full time

Job summary

Fidelity Information Services, LLC in London is building an AI-enabled, autonomous banking platform for Tier-1 institutions. The Platform Engineer will design and operate multi-region Kubernetes infrastructure, own GitOps delivery, observability, DR, zero-trust security, and AI-driven SRE automation, shipping into production at scale.

You will work in a small, senior team with strong enterprise resources, operating across hybrid cloud environments and direct production responsibility for core

Qualifications

• Deep Kubernetes experience (EKS/GKE/AKS) with operators/CRDs a bonus.
• Terraform (multi-cloud). GitOps tooling Flux or ArgoCD.
• Kafka / event streaming. Distributed SQL databases.
• Go, Rust, or similar languages (AI-accelerated development welcome).

Responsibilities

• Build and scale multi-region Kubernetes infrastructure for five-nines workloads.
• Architect active-active distributed systems.
• Implement Terraform, Helm, and GitOps across cloud and hybrid environments.
• Own DR, failover, backup/restore, and multi-region resiliency.
• Drive zero-trust security, identity, multi-tenant isolation, and cryptographic audit trails.
• Lead AI-driven automation, auto-remediation, incident insights, and root-cause analysis.
• Support on-prem and air-gapped deployments and legacy integrations.
• Mentor and promote engineering best practices across the organization.

Skills

Go

Rust

Kafka

Distributed SQL databases

AI-accelerated development

Observability

Ownership mindset

Tools

Kubernetes

Terraform

Flux

ArgoCD

Prometheus

Grafana

OpenTelemetry

Job description

Type Of Hire

Experienced (relevant combo of work and education)

Position Type

Full time

Role Summary

Sits within a newly acquired startup building an AI-enabled, autonomous banking platform for Tier-1 financial institutions within the banking group. The Platform Engineer builds and operates the multi-region Kubernetes infrastructure that powers the platform at five-nines availability, owning GitOps delivery, observability, disaster recovery, zero-trust security, and AI-driven SRE automation. Ships directly into production environments at the world's largest banks.

Key Responsibilities

Infrastructure & Architecture

• Infrastructure~ Build and scale multi-region Kubernetes infrastructure (EKS/GKE/AKS) for five-nines workloads
• Architecture~ Architect active-active distributed systems
• GitOps~ Implement Terraform, Helm, and GitOps (Flux) across cloud and hybrid environments

Reliability & Security

• Resiliency~ Own DR, failover, backup/restore, and multi-region resiliency
• Security~ Drive zero-trust security, identity, multi-tenant isolation, and cryptographic audit trails
• Observability~ Build and maintain stacks using Prometheus, Grafana, Loki, and OpenTelemetry

AI & Operations

• AI-SRE~ Lead AI-driven automation~ auto-remediation, incident insights, and AI-based root cause analysis
• Deployment~ Support on-prem and air-gapped deployments and legacy integrations
• Contribute to team excellence through knowledge sharing, mentoring, and coaching, helping to develop technical capability and promote engineering best practices across the organization

Required Experience & Capabilities

Technical Expertise

• Deep Kubernetes experience (EKS/GKE/AKS; operators/CRDs a bonus)
• Terraform (multi-cloud). GitOps tooling~ Flux or ArgoCD
• Kafka / event streaming. Distributed SQL databases
• Language~ Go, Rust, or similar (AI-accelerated development welcome)

Cloud & Reliability

• Prometheus, Grafana, and OpenTelemetry observability stack experience
• DR, HA, and Zero-Trust architecture design and ownership

Operating Style

• Strong ownership mindset across the full infrastructure lifecycle
• Comfortable operating in hybrid cloud and regulated environments
• AI-native engineer~ integrates LLMs and agentic workflows into daily engineering practice

IMPACT & SCOPE

• Direct impact on core banking platforms used by Tier-1 global institutions
• High autonomy and accountability within a small, senior team
• Work shipped directly to production environments at enterprise scale

WHY THIS ROLE

This role offers the autonomy, ownership, and technical depth of a startup, combined with the scale, stability, and long-term impact of FIS. Engineers in this role shape foundational banking infrastructure while operating with clear accountability, enterprise resources, and real-world production responsibility.

Privacy Statement

FIS is committed to protecting the privacy and security of all personal information that we process in order to provide services to our clients. For specific information on how FIS protects personal information online, please see the Online Privacy Notice.

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.