Site Reliability Engineer

Harrison Clarke partners exclusively with venture-backed technology companies building category-defining products. We are currently conducting a confidential retained search on behalf of one of our flagship portfolio companies, a well-capitalised, mission-driven technology firm that has been operating at scale since 2014, with millions of global users and a reputation for rigorous engineering. The Role As Senior Site Reliability Engineer , you will own the infrastructure foundation that the entire engineering organization depends on. This isn't a support function, it's a strategic one. You'll work at the intersection of reliability, scalability, and developer experience, ensuring that a high-availability distributed system stays fast, resilient, and ready to grow. What You'll Be Doing Maintaining, improving, and securing cloud infrastructure across AWS and GCP , alongside Linux systems at scale Partnering directly with engineering teams to streamline deployment, packaging, and troubleshooting of complex distributed applications Driving CI/CD maturity using Jenkins and adjacent tooling Building, operating, and continuously improving Kubernetes clusters in production; serving as the internal authority on container orchestration Leading application migration efforts onto Kubernetes in close collaboration with development squads Owning internal platform services including Prometheus and ELK Monitoring high-availability environments and responding to incidents with urgency and rigour; conducting thorough, blameless post-mortems Participating in architecture and code reviews, setting the bar for infrastructure best practice Evaluating emerging technologies and making pragmatic decisions on adoption Identifying and eliminating toil through intelligent automation What You Bring 5+ years in cloud-based systems operations as an SRE or DevOps engineer Hands-on experience with infrastructure as code and configuration management Strong command of SRE methodologies : SLOs/SLIs/error budgets, capacity planning, disaster recovery testing Deep understanding of networking fundamentals Proven track record managing production workloads with sophisticated monitoring and alerting Comfort with on-call responsibilities and a systematic approach to incident management Proficiency in at least one scripting or programming language A collaborative, low-ego working style — you raise the team up, especially under pressure Bonus Points Ability to read and reason about Go , Rust , C++ , or TypeScript Experience applying AI-driven approaches to operational automation #J-18808-Ljbffr