Fully Remote | Up to £120k Base Bonus Stock Options We're partnered with a high-growth FinTech scale-up at the forefront of building next-generation market surveillance and risk monitoring technology. Backed by leading investors and trusted by global financial institutions, regulators, and crypto-native firms, they process trillions of market events daily to protect investors, detect manipulation, and ensure integrity across both traditional finance and digital asset markets. As a Senior Software Engineer, you'll play a key role in designing and scaling advanced systems and algorithms that safeguard some of the most dynamic and complex markets in the world. This is a chance to build high-performance, low-latency, and cloud-native systems while tackling challenges in fraud detection, data engineering, and market integrity. ?? What you'll do Design, implement, and optimise algorithms for detecting manipulation, fraud, and compliance breaches in real-time and batch data. Build and scale high-volume data pipelines handling billions of daily events across distributed systems. Work with cutting-edge tech including Java, Kafka, Spark, Kubernetes, Clickhouse, Snowflake, Redis. Collaborate with quants, data scientists, and compliance experts to improve surveillance strategies. Contribute to system architecture for low-latency monitoring and high-throughput processing. Continuously improve data quality, reliability, and query optimisation at scale. ?? What we're looking for 5 years' experience in software engineering, ideally in financial markets, market surveillance, or large-scale data systems. Strong skills in Java (or similar: Kotlin, C#, C++) ; Python is a plus. Proven experience with real-time, low-latency systems and distributed data pipelines. Hands-on with Kafka, Spark, K8s, Clickhouse, Snowflake, and modern data architectures. Solid foundations in algorithms, system design, and optimisation. Curious, proactive, and comfortable working in a fast-moving, scaling environment. ?? Why apply? Fully remote role with global reach. Up to £120k base bonus stock options. Build mission-critical systems at the intersection of finance, crypto, and AI/ML-driven surveillance. Work alongside world-class engineers, quants, and technologists shaping the future of market integrity. McGregor Boyall is an equal opportunity employer and do not discriminate on any grounds.