Lead Software Engineer

Senior/Lead Go Engineer – 📍 London | Full-Time | Fintech / Crypto

I’m partnered with a leading global media and data platform in the digital asset space, who are looking for a Senior or Lead Go Engineer to join their London-based engineering team. This is a hands-on opportunity to work with high-throughput systems delivering real-time market data that powers the next generation of finance and investing.

You’ll play a key role in designing, building and optimising systems that aggregate, process and deliver real-time cryptocurrency and financial market data. The position will see you working with high-volume APIs and building robust, scalable infrastructure to support a growing ecosystem of data products and services.

What You’ll Be Doing:

• Designing and developing scalable, high-performance backend services in Go (Golang)
• Leading the technical direction of key projects, making decisions around architecture, performance and maintainability
• Integrating multiple external data sources and APIs into a unified data platform
• Collaborating with product, data and infrastructure teams to ensure seamless system integration
• Creating detailed internal documentation and conducting peer reviews to uphold high engineering standards
• Building robust test coverage including unit, integration and E2E tests

What We’re Looking For:

• Significant experience building high-throughput, scalable systems
• Deep expertise in Go, writing clean and maintainable production-grade code
• Proficiency with PostgreSQL and Redis, or similar relational and in-memory databases
• Strong understanding of performance optimisation, observability and reliability best practices
• Excellent communication skills and the ability to convey complex technical concepts clearly

Nice to Have:

• Experience building websocket services and real-time APIs
• Familiarity with message queues or stream-based data pipelines (e.g. Kafka, RabbitMQ)
• Prior exposure to the crypto, blockchain, or traditional financial markets
• Degree in Computer Science or similar, or equivalent practical experience

Location & Working Setup:

• This role is based in central London, where they operate a hybrid model, working minimum 3 days per week in the office. You’ll be working closely with colleagues in engineering, product and data in a collaborative environment.

If you’re excited by the challenge of building critical infrastructure for the digital asset economy and enjoy working in a fast-paced, data-rich environment, I’d love to hear from you.