Platform Reliability Engineer

Technical Platform Reliability EngineerResponsibilitiesSet the technical direction for the reliability and evolution of our shared platform, balancing resilience, security, delivery speed, operational complexity, and cost.Lead high-impact initiatives spanning cloud infrastructure, compute platforms, networking, observability, deployment systems, and production operations.Design and evolve highly available AWS architectures across multiple accounts, environments, and regions.Improve the reliability and operability of workloads running across ECS, EKS/Kubernetes, serverless platforms, managed data services, and traditional compute.Establish practical SRE standards, including service-level indicators and objectives, error budgets, capacity planning, resilience testing, and production-readiness reviews.Identify recurring operational risks and eliminate them through automation, architectural improvements, safer defaults, and clear ownership.Advance our infrastructure-as-code and delivery capabilities using Terraform, Terraform Enterprise, AWS CDK, GitHub Actions, CodeBuild, and related tooling.Evolve internal platform capabilities and developer workflows, including reusable infrastructure modules, deployment pipelines, service templates, and Backstage-based self-service.Improve observability across the platform using Datadog, CloudWatch, distributed tracing, structured logging, actionable alerting, and service ownership metadata.Lead the technical response to significant production incidents, coordinate diagnosis and recovery, and ensure post-incident learning results in durable improvements.Strengthen disaster-recovery and business-continuity capabilities through tested recovery procedures, failure exercises, and the removal of hidden dependencies and single points of failure.Partner with Security to embed least-privilege access, secrets management, encryption, auditability, network controls, and policy enforcement into platform foundations.Work with engineering teams operating critical databases, streaming platforms, workflow systems, and external connectivity to improve end-to-end reliability.Develop technical strategies and roadmaps for major areas of the platform, communicate trade-offs, and build alignment across engineering and business stakeholders.Mentor engineers, improve the quality of technical design and operational practices, and act as a trusted reviewer for consequential architectural decisions.Participate in and continuously improve a sustainable production support and on-call model.QualificationsA strong track record of designing and operating large-scale, mission-critical production systems.Deep expertise in AWS architecture and operations, including networking, identity and access management, compute, storage, managed services, and multi-account environments.Advanced experience with infrastructure as code, particularly Terraform, including the design of reusable modules and controlled delivery workflows.Strong knowledge of distributed systems and reliability concepts, including failure modes, availability, consistency, capacity, recovery, and graceful degradation.Hands-on experience operating containerised workloads using Kubernetes/EKS, ECS, or comparable orchestration platforms.Demonstrated experience establishing effective observability, alerting, SLOs, incident-management practices, and post-incident improvement programmes.Strong software-engineering ability in Python, Go, TypeScript, or a comparable language, with an emphasis on maintainable operational tooling and automation.Experience leading ambiguous, cross-organisational technical initiatives without relying on formal authority.Sound judgement under pressure and the ability to make clear, risk-based decisions during production incidents.Excellent written and verbal communication, including the ability to explain complex technical decisions to engineering and non-engineering stakeholders.A pragmatic approach to engineering, with the ability to determine where standardisation is valuable, where flexibility is appropriate, and where complexity is unjustified.Nice to HaveExperience supporting trading, financial-services, or other highly regulated and time-sensitive production environments.Experience with Datadog, Terraform Enterprise, Backstage, Argo CD, GitHub Actions, or AWS CodeBuild and CodePipeline.Knowledge of high-throughput messaging and data platforms such as Kafka or Confluent.Operational experience with PostgreSQL/Aurora, CockroachDB, Redis/Valkey, QuestDB, Snowflake, or comparable data systems.Strong networking knowledge, including Transit Gateway, PrivateLink, DNS, hybrid connectivity, firewalls, and private-access platforms such as Zscaler.Experience designing multi-region systems and leading disaster-recovery or resilience-testing programmes.Familiarity with cloud cost management and designing systems that are both reliable and economically sustainable.Experience contributing to internal developer platforms, service catalogues, golden paths, or organisation-wide engineering standards.