Senior Platform Site Reliability Engineer

Who you are

• Observability and instrumentation: hands-on OpenTelemetry experience (spans, metrics, traces, context propagation) and production use of Honeycomb, Datadog, Dynatrace, or Grafana; able to instrument Java or Python services directly
• SLOs and error budgets: proven track record designing customer-meaningful SLIs, setting error budgets, configuring multi-window burn-rate alerts, and working with development teams on reliability measurement
• CI/CD and release engineering: experience building pipelines with safety mechanisms: blue/green and canary releases, automated rollback, and DORA metrics integration
• Container orchestration: Kubernetes (EKS, AKS, or GKE) required; HashiCorp Nomad is a strong advantage on IG’s hybrid estate; solid understanding of cloud networking and IaC (Terraform preferred)
• Software engineering: production-quality coding in Java and/or Python; comfortable contributing to application codebases to implement reliability patterns, not just configuring infrastructure around them
• Distributed systems: strong understanding of how large-scale systems fail and how to make them fail safely; circuit breakers, bulkheads, idempotency, graceful degradation, and load-shedding; high-throughput, low-latency environments preferred
• Incident management: on-call experience on production systems, blameless PIR facilitation, contributing-factor analysis, and driving action items to closure; PagerDuty and ServiceNow familiarity helpful
• Chaos engineering: experience designing and executing hypothesis-driven experiments with blast-radius controls and gap-to-impact-tolerance analysis; AWS FIS, Gremlin, or equivalent
• Community and standards: at ease in a guild or community-of-practice model; comfortable writing RFCs, presenting at engineering forums, and building standards that others will adopt
• Track record in high-throughput, production environments (financial services, trading platforms, or similar mission-critical systems preferred)
• Demonstrated ability to improve system reliability and performance at scale
• Experience working collaboratively with development teams to implement observability and reliability improvements
• Strong troubleshooting skills in distributed systems environments
• Systems thinking approach to problem-solving
• Excellent communication skills for cross-functional collaboration and technical enablement
• Ability to balance hands-on development work with operational responsibilities
• Strong bias toward automation and eliminating manual toil

What the job involves

• 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
• Implement comprehensive monitoring and observability using OpenTelemetry 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
• 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
• 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

The application process

• End Date: August 26, 2026