Senior Full Stack Engineer - Market Data Platforms Inside IR35 - Up to £700 per day Hybrid in Central London 6-Month Initial Contract (3-Year Project Scope) October Start possible! Technologies: Python | gRPC | MongoDB | HBase We are seeking an experienced Senior Full Stack Engineer to design, develop and support market data platforms within a Global Markets environment. The role involves building end-to-end technology solutions across Front End applications, Back End services, APIs and data layers. You will contribute to platforms that support critical market data analytics, distribution and consumption, ensuring solutions are scalable, performant and reliable in production-critical environments. The ideal candidate will combine strong full-stack engineering capabilities with experience working with large datasets, distributed systems and market data technologies. You will collaborate closely with trading, analytics and data teams to translate complex business requirements into robust technical solutions. Key Responsibilities Design, develop and maintain full-stack applications spanning user interfaces, Back End services, APIs and databases. Build and enhance market data platforms supporting analytics, data distribution and downstream consumption. Develop and integrate APIs and services using technologies such as REST and gRPC. Work with large-scale NoSQL and distributed data stores, including MongoDB, HBase or similar technologies. Troubleshoot complex production ..... full job details .....