Senior/Lead Go Engineer – London | Full-Time | Fintech / Crypto Please read the information in this job post thoroughly to understand exactly what is expected of potential candidates. 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.