Software Engineer, Backend Developer

Want to work on a platform that's actually under load? This one handles thousands of transactions every second, and it needs engineers who enjoy making fast systems faster.

The company is a fast-growing, profitable AI business with around 600 people. It's still in the phase where a mid-level engineer can ship meaningful work quickly and grow with the platform.

You'll join a product engineering team building and running backend services in production. Your work will include:

• Designing, building and shipping backend services, mainly in Go
• Building event-driven services on messaging platforms such as Kafka
• Improving performance, reliability and observability across live systems
• Taking part in code reviews, design discussions and technical planning
• Debugging production issues and fixing them at the root
• Working closely with product and senior engineers to deliver features end to end

• 3-5 years' professional software engineering experience
• Strong backend skills in Go, or in Rust or Java with an interest in moving to Go
• Experience with messaging or streaming tools such as Kafka, Google Pub/Sub or RabbitMQ
• Experience building and supporting production systems

• Salary up to £100,000
• Annual bonus
• Equity in a pre-IPO business
• Remote-first, with just two days a month in London
• A clear path to Senior Engineer as the team scales