Site Reliability Engineer (On-site)

Darktrace is a global leader in AI cybersecurity, providing the essential cybersecurity platform to secure organizations today and for an ever-changing future. Darktrace AI learns from each business's unique data in real time, detecting threats and intervening against attacks with precision and speed. We are a diverse and inclusive team of over 2,400 employees, each playing a crucial role in protecting nearly 10,000 organizations and communities worldwide from known, unknown, and novel cyber-threats.

You’ll act as the go-to authority in your area of specialism, working across teams to embed best practices, solve complex reliability challenges, and improve system resilience at scale.

• Act as the subject matter expert in your chosen reliability domain
• Define and implement standards, frameworks, and best practices across SRE, Platform Engineering, and DevSecOps
• Stay current with industry trends and bring innovative ideas into the organisation
• Design and implement solutions to complex, cross-cutting reliability challenges
• Build tooling, automation, and frameworks to improve system resilience and scalability
• Lead deep-dive investigations into systemic issues and drive long-term fixes
• Partner with Platform Engineering to ensure your domain is embedded within the internal developer platform
• Collaborate with DevSecOps to integrate security, compliance, and resilience practices
• Contribute to cross-team initiatives that improve reliability across the stack
• Play a key role in incident response, particularly within your specialism
• Contribute to on-call rotations and continuous improvement of operational processes
• Develop runbooks, documentation, and training materials to support teams

• Proven experience in Site Reliability Engineering, DevOps, or infrastructure engineering
• Deep expertise in at least one of the following areas:
• Observability & monitoring (metrics, logging, distributed tracing)
• Performance engineering & capacity planning
• Data infrastructure reliability (databases, streaming, pipelines)
• Security-focused SRE (hardening, compliance automation, secrets management)
• Network reliability & traffic management
• Strong programming skills (e.g. Go, Python, or similar)
• Experience with cloud platforms (AWS, GCP, Azure) and Kubernetes
• Strong communication skills, with the ability to explain complex technical concepts clearly
• Self-driven with the ability to identify and prioritise high-impact work independently

• Experience building internal developer platforms or tooling
• Contributions to open-source, technical blogs, or public speaking
• Experience working in regulated environments
• Familiarity with SLO frameworks and error budget management
• Relevant certifications in your specialist domain

• 23 days’ holiday + all public holidays, rising to 25 days after 2 years of service.
• Additional day off for your birthday.
• Private medical insurance which covers you, your cohabiting partner and children.
• Life insurance of 4 times your base salary.
• Salary sacrifice pension scheme.
• Enhanced family leave.
• Confidential Employee Assistance Program.
• Cycle to work scheme.