Senior Platform SRE

Job Title Senior Platform SREJob Description About IG GroupIG Group is a FTSE 100 fintech operating across five continents, serving over 1.4m 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

The Platform SRE team is the engine of IG’s reliability programme. We sit within Infrastructure & Operations, working across IG’s hybrid estate of on-premises Hashi Corp Nomad and AWS.  We are not a reactive ops team. We build the platform, standards, and tooling that make reliability the default for every engineering team ough the SRE Guild, we connect with Domain SREs and Reliability Champions across the organisation, setting the bar and lifting it together.

Your role in the Team's Success You will be a hands-on technical contributor at the heart of the Platform SRE team, owning pieces of the reliability platform that hundreds of engineers depend on. You will work at the intersection of software engineering, observability, and systems reliability, turning reliability from a reactive concern into a proactive engineering discipline. You will partner with Platform Engineering, product teams, and Reliability Champions to define what good looks like in production and then make it the default.

You will contribute to the SRE Guild, mentor engineers across the organisation, and when things go wrong, you will be on the call helping to mitigate, understand, and prevent a repeat. What you'll do Build and own the reliability platform

Implement comprehensive monitoring and observability using Open Telemetry and distributed tracing. Maintain SLO, error budgets and burn-rate tracking Establish and maintain 24/7 operational readiness including automated deployments, blue/green releases, and zero-downtime patching strategies Engineer self-healing capabilities: auto-remediation, error-budget-gated rollback, and automated traffic rerouting Design and run chaos experiments across the AWS estate, turning severe-but-plausible failure scenarios into engineering improvements Build automation tools and CI/CD pipelines that embed reliability practices, while applying software engineering discipline including version control, code reviews, and testing.

Contribute to the SRE AI agent, IG’s agentic tooling for incident investigation and reliability review, built on AWS frontier models Mentor junior SREs and Reliability Champions on reliability patterns and production engineering discipline Set and uphold standards

Author and evolve the SRE standards that underpin the Guild: SLO methodology, error budget policy, observability instrumentation guide, and Production Readiness Review (PRR) checklist Mentor developers on reliability patterns including circuit breakers, retry logic, and fault tolerance Work with development teams and Reliability Champions to design SLOs on customer journeys rather than per-service.  Assist and guide teams in system design, capacity planning, architectural reviews and closing observability gaps.

Own incident response and learning

Facilitate blameless post-incident reviews (PIRs) within five working days using contributing-factor methodology Maintain the Lessons Register, track remediation actions to closure, and surface patterns across incidents quarterly What you'll need for this role:

Extensive working experience in all…