Software Engineer - Trading Execution

About Uphold Uphold is a financial technology company that believes on-chain services are the future of finance. It provides modern infrastructure for on-chain payments, banking and investments. Offering Consumer Services, Business Services and Institutional Trading, Uphold makes pioneering financial services easy and trusted for millions of customers in more than 140 countries. Uphold integrates with more than 30 trading venues, including centralized and decentralized exchanges, to deliver superior liquidity and optimal execution. Uphold never loans out customer assets and is always 100% reserved. The company pioneered radical transparency and uniquely publishes its assets and liabilities every 30 seconds on a public website ( Transparency Page ). Uphold strips away the complexity and lack of transparency to open up Web3 finance for everyone. To learn more about Uphold, please visit https://uphold.com . Job Summary We are seeking a highly skilled Software Engineer to join our core Trading team. This is a critical role where you will be responsible for the engine of our global trading platform: the execution system. You will focus on building and optimising the high-throughput, low-latency services that connect us to the world's crypto exchanges and liquidity providers. You will design and build systems where performance, concurrency and reliability are crucial, directly impacting every trade our platform makes. What you'll be doing primarily: Designing, building and maintaining our core trading execution systems using Golang. Developing and managing high-throughput, low-latency connectivity to crypto exchanges and liquidity providers using REST, WebSockets and FIX protocols. Optimising code for high concurrency and minimal latency to ensure best-in-class trade execution and system performance. Enhancing our monitoring, alerting and observability stack for the execution platform to ensure system stability and rapid incident response. Collaborating on the architecture of our distributed, microservice-based trading system. Required qualifications: BSc or advanced degree in Computer Science, Engineering, or a related field, or equivalent experience. 3+ years of professional software engineering experience, with significant experience in Golang and/or C++ and Linux. Deep understanding and hands-on experience with real-time API protocols, particularly REST and WebSockets. Strong grasp of concurrent programming principles (e.g., multithreading, goroutines, channels) and experience building highly concurrent applications. A proven track record of working on low-latency, high-throughput, or performance-critical systems. Excellent problem-solving skills and the ability to work effectively in a fast-paced, cross-functional team. Fluent written and oral English skills. Bonus if you have: Direct experience with the FIX protocol. Experience with DeFi contracts and decentralised exchanges Experience in financial markets, especially crypto trading, HFT, or market making. A solid understanding of networking concepts (TCP/IP, UDP, gRPC) and their impact on application performance. Experience with message queues (e.g., Kafka, NATS) and distributed systems. Familiarity with containerisation and orchestration technologies (Docker, ArgoCD, Kubernetes, Nomad). What We Offer Innovation and Impact: Contribute to pioneering projects in a dynamic and challenging environment. Competitive Compensation: Performance bonuses, and comprehensive benefits on top of a competitive salary. Strong Company Culture: Thrive in a supportive, collegiate environment with values of integrity, teamwork, accountability, and excellence. Global Collaboration: Participate in regular updates, strategy sessions, and networking opportunities across the group. Development Opportunities: Access training and mentorship programs. Flexibility: Enjoy options to work from home, other locations, or adjust your hours. Inclusive Environment: Value and respect diverse perspectives. Our Ben