Head of Site Reliability Engineering (SRE)

As Head of Site Reliability Engineering at Blockchain, you serve as the principal leader developing and executing the infrastructure reliability strategy for a global crypto company with over 90 million wallet holders and $1 trillion in crypto transactions facilitated since 2011. You join the senior engineering management team at a time of high growth, shaping the infrastructure vision while ensuring the day-to-day uptime and safety of the platform.

What you'll do

• Establish a multi-year platform and reliability strategy, defining the SRE roadmap and driving engineering standards for observability, automation, and production readiness
• Enable rapid product delivery while maintaining standards-compliance and security through well-designed self-service tooling
• Lead, mentor, and scale a global team of senior SREs, developing technical leaders through coaching and a strong hiring pipeline
• Architect and manage a secure hybrid infrastructure across GCP, AWS, and on-premise data centers, deploying sensitive components using Kubernetes and Hashicorp Nomad with zero-trust principles
• Own incident response and root-cause analysis, ensuring MTTD/MTTR targets are met while systematically addressing technical debt and legacy system inconsistencies
• Govern cloud architecture, Infrastructure as Code, networking, and cost management to maintain the organisation's dedication to automated workflows
• Build strong relationships across departments to understand requirements and deliver services while maintaining standing with auditors and regulators

What you bring

• Proven experience leading senior SRE teams in 24/7 financial environments, with the ability to influence alignment around shared engineering standards
• Deep expertise in GCP and AWS networking and management, alongside hands-on experience with Kubernetes, Nomad, and optimised Terraform workflows
• A solid background in bare-metal hardware, data centre networking, and implementing Cloudflare Zero Trust architectures
• A strong software engineering background with deep understanding of distributed systems, Linux, and approaches to achieving good observability and reliability
• Strong judgment in prioritising reliability, security, and developer productivity while evolving complex, heterogeneous estates rather than just greenfield environments

What we offer

• Full-time salary based on experience and meaningful equity in the company
• Based in the London office with a mandatory in-office presence of four days per week
• Work from Anywhere Policy allowing remote work from anywhere in the world for up to 20 days per year
• Unlimited vacation policy
• Apple equipment
• ClassPass membership
• Flexible work culture

About Blockchain

Blockchain is a global crypto company connecting the world to the future of finance. Trusted by over 90 million wallet holders and more than 40 million verified users, it has facilitated over $1 trillion in crypto transactions since its inception in 2011.