2 months ago
London, United KingdomMid Level
Responsibilities
- Learn the Trainline platform’s architecture, dependencies, and failure modes.
- Participate in production incident response, including investigation, mitigation, communication, and service restoration.
- Contribute to post-incident reviews and reliability, scalability, and resilience improvements.
- Participate in the SRE on-call rotation.
- Design, build, and maintain observability using metrics, logs, events, and traces.
- Improve monitoring and alerting to reduce noise and improve mean time to detection.
- Surface operational data clearly during live incidents.
- Support AWS-hosted infrastructure and shared platform services using infrastructure-as-code and CI/CD tooling.
- Collaborate with product engineering teams on operational readiness and safe deployments.
- Advise on reliability and resilience practices.
- Write and maintain code and scripts supporting reliability and observability goals.
Requirements
- Experience with SRE concepts including SLIs, SLOs, and error budgets.
- Hands-on experience with observability tools such as New Relic, Elastic/ELK Stack, Influx, Grafana, or similar.
- Experience with cloud providers, preferably AWS.
- Experience troubleshooting Linux operating systems.
- Scripting experience in at least one language, preferably Python.
- Understanding of load balancing, reverse proxies, upstream configuration, health checks, and worker and data flow concepts.
- Understanding of application architecture concepts including threading, queuing, readiness checks, health checks, circuit breakers, timeouts, exponential backoff, and throttling.
- Experience building, maintaining, and evolving time-series data and related functions such as retention, cardinality, deviation, and moving averages.
- Experience with build, deployment, and configuration management tools such as GitHub Actions and Terraform.
Benefits
- Private healthcare and dental insurance.
- Generous work-from-abroad policy, including a 28-day allowance.
- 2-for-1 share purchase plans.
- Electric vehicle scheme.
- Extra festive time off and family-friendly benefits.
- Clear career paths, transparent pay bands, personal learning budgets, and regular learning days.
- Hybrid work model requiring at least 60% office attendance over a 12-week period.
