Principal Site Reliability Engineer (AWS/Terraform)

Location: London, United Kingdom, with a blended working model requiring office attendance at least twice per month; additional offices are located in Cambridge and Leeds. Up to 30 days of remote working abroad annually may be available with approval.

Salary from £107,000 per year.

Company

hirify.global enables genomic medicine and research through national-scale healthcare software, genomic data systems, and collaboration with the NHS, researchers, and healthcare partners.

What you will do

• Build and lead an initial team of three Site Reliability Engineers.
• Identify and prioritise reliability improvements across user-facing applications, backend APIs, bioinformatics pipelines, and data workflows.
• Define standards, architectural patterns, tooling, and services that help engineering teams operate reliable systems.
• Develop release automation and other capabilities that reduce operational toil and improve engineering effectiveness.
• Partner with product squads to embed SRE principles, improve operations, and solve complex technical challenges.
• Influence engineering strategy, governance, technical direction, and a culture of operational resilience.

Requirements

• Significant hands-on experience applying SRE principles and practices in real-world environments.
• Strong software engineering skills, particularly in release automation and toil reduction; Python experience is preferred.
• Extensive platform engineering experience across CI/CD, infrastructure as code, monitoring, alerting, backup, and recovery.
• Experience with at least one major public cloud, preferably AWS, and an understanding of system architecture and resilience.
• Demonstrated ability to lead teams, develop people, coordinate shared outcomes, and communicate with technical and non-technical stakeholders.
• Ability to work remotely and attend in person when required under the blended working model.

Nice to have

• Healthcare or bioinformatics experience.
• Experience working in regulated environments.

Culture & Benefits

• Blended and flexible working with no general expectation of full-time office attendance.
• 30 days of annual leave plus bank holidays and additional long-service leave.
• Defined contribution pension with employer double matching up to 10%, life assurance, and an electric vehicle salary sacrifice scheme.
• Individual learning budgets, training and certification support, and reimbursement for one annual professional subscription.
• Health and wellbeing benefits including subsidised gym membership, Headspace, an Employee Assistance Programme, eye tests, and flu jabs.
• Inclusive workplace focused on equity, diversity, collaboration, continuous improvement, and employee recognition.

Hiring process

• Successful candidates must complete a Standard Disclosure and Barring Service check.
• Recruitment interviews can be adjusted where needed to support full participation.