About the jobJob summaryThis is a rare opportunity to shape reliability engineering across one of the UK''s largest and most important digital estates.Enterprise Live Services (ELS) at HMRC is evolving into a modern, engineering-led organisation - enabling HMRC to deliver change faster while strengthening reliability, resilience and trust.As Head of Service Reliability Engineering, you will lead a distinct, independent capability spanning services, products and platforms. You will make reliability, operability and observability integral to engineering from the outset.With enterprise-wide reach and influence, you will set the direction for SRE, raise service maturity and build a lasting capability that enables teams to innovate safely and operate with confidence.Job descriptionThe Head of Service Reliability Engineering is accountable for defining, embedding, and continuously raising service reliability engineering capability across HMRC. Sitting within Chief Engineering and Platform Office (CEPO) and Enterprise Live Services (ELS), the role leads the independent SRE tower, operating as a centre of excellence for reliability, operability, resilience, and observability. The role does not own delivery, platforms, or live operations. Instead, it coaches, challenges, and enables product, platform, and ELS teams to meet enterprise reliability and service maturity expectations using objective, evidence-based practices. The role provides strategic leadership and technical authority ..... full job details .....