Senior Software Engineer

Senior Backend Engineer (Go)

Remote-First | Up to £130,000 + Bonus + Equity

We're partnering with one of the fastest-growing cybersecurity companies in the market. Already operating at unicorn status and on track to reach approximately $400M ARR by the end of 2026, the business continues to scale rapidly across the UK and globally.

With around 450 employees worldwide, a profitable foundation, and plans to hire over 200 additional team members this year, this is an opportunity to join a high-growth company at a pivotal stage of its journey.

As part of a major platform transformation, the engineering team is rebuilding critical systems from the ground up, embracing AI-native development practices and migrating services to Go. The focus is on creating highly scalable distributed systems while driving platform performance towards sub-50ms latency.

The Opportunity

As a Senior Backend Engineer, you'll play a key role in shaping the next generation of the platform by:

• Building and scaling high-performance backend services in Go
• Designing and delivering distributed systems capable of handling significant scale and thuput
• Driving performance optimisation and low-latency architecture initiatives
• Contributing to the modernisation and rewrite of core platform services
• Collaborating closely with platform, infrastructure, and product engineering

Skills

• Strong commercial experience developing backend systems ideally with Go (Would consider Java or Python)
• 5+ years' experience building scalable, distributed applications
• Deep understanding of concurrency, systems design, and performance optimisation
• Experience working on low-latency and/or high-throughput platforms
• Comfortable operating in fast-moving, high-growth environments
• Interest in AI-assisted development and modern engineering

Package

• Up to £135,000 base salary, bonus, equity - Remote first with the expectation to travel to London 2-3 times a quarter