Job Title
Senior Platform Engineer
Job Description
So, who are we?
IG is a FTSE 100 fintech operating across five continents, serving over 1.3m customers and handling billions of dollars in transactions – built on scale, trust, and proof.
We didn't pivot to innovation; it's how we've always operated. What that means for the people who work here is real: genuinely complex problems to solve, the technology and resources to tackle them properly, and the kind of scope that's rare in established businesses.
The bar is high – bring a curious and forward-thinking mindset and we'll give you the platform to define what comes next. Join us at IG – the future gets built here.
Your team
This role is part of our Platform Engineering team who are responsible for building the cloud and containers platform landscape to support the business applications via self-service capabilities and automation.
Your role in the Team's Success
The Senior Platform Engineer is a hands-on technical contributor responsible for building, evolving, and maintaining cloud platform infrastructure to ensure it is secure, scalable, reliable, and cost-effective.
The Senior Platform Engineer embeds best practices into platform design and delivery across Engineering, Security and FinOps. They operate as a hands on expert, contributing to complex technical decisions, reducing platform risk, and enabling engineering teams to build and operate services with confidence, speed, and financial discipline.
The role includes mentoring junior engineers and supporting knowledge sharing across the team.
What you'll do
Design and architect scalable AWS cloud infrastructure, developing IaC solutions using Terraform and leading cloud technology evaluation and standardisation initiatives.
Build, optimise, and maintain CI/CD pipelines for infrastructure deployment, establishing DevOps and DevSecOps best practices across the organisation
Architect and manage Kubernetes environments (EKS, AKS, GKE) and implement platform engineering tools to deliver self-service capabilities via an IDP (e.g. Backstage)
Define and enforce monitoring, alerting, and observability standards to ensure infrastructure reliability and performance
Foster collaboration between development and operations teams, bridging gaps to drive a unified engineering culture
Mentor junior engineers, share knowledge across the team, and write and maintain documentation to support continuous learning and engineering best practices.
What you'll need for this role
Key Qualification Requirements:
Cloud Infrastructure & Experience: 4+ years in cloud infrastructure engineering with hands-on experience designing and administering complex platforms across AWS, GCP, and Azure, including deep knowledge of networking (VPC, Direct Connect, Transit Gateways, BGP, OSPF) and IaaS/PaaS architectural patterns.
Infrastructure-as-Code & Automation: 2+ years with IaC tools (Terraform or Ansible) and hands-on experience with orchestration and automation platforms (AWX, Ansible Tower, Terragrunt), scripting in Python, Bash, or Go
DevOps & DevSecOps: 2+ years designing and implementing CI/CD pipelines using Jenkins, GitLab, GitHub Actions, or equivalent, with strong knowledge of security best practices including secrets management, vulnerability scanning, and compliance
Kubernetes & Containers: 2+ years of Kubernetes administration across on-premises and cloud environments (EKS preferred, AKS, GKE), with proficiency in networking, RBAC, pod security, service mesh (Istio), and Docker image management
Platform Engineering & Developer Tooling: Experience implementing developer portals (Backstage), artifact repositories (JFrog Artifactory, Nexus), API gateways, and self-service platform engineering tools to support internal teams
Observability & Reliability: Hands-on experience with monitoring and observability platforms (Honeycomb, Prometheus, Grafana), including defining alerting standards and ensuring infrastructure reliability at scale
Architecture &…