Business Analyst - Core Banking System Upgrade - London (hybrid) - £550/d (outside IR35) Overview Oliver James has partnered with a specialist UK bank to support the upgrade of its Finastra Equation core banking platform. This is a key role within a wider change programme, focused on ensuring the successful delivery of a complex core system upgrade in a regulated environment. You will join a collaborative technology and change function, working closely with senior business and IT stakeholders. This role would suit an experienced IT Business Analyst with strong Equation expertise who is comfortable operating across the full project lifecycle in a fast-paced banking environment. Key Responsibilities Identify and manage key stakeholders across business and IT, ensuring clear communication and expectation managementLead requirements elicitation activities through workshops, interviews and analysis sessionsDefine and agree scope, ensuring thorough impact assessments across people, process, organisation and technologyProduce high-quality BA artefacts including functional and non-functional requirements, user stories, process models and data modelsAlign business requirements to technical solutions, ensuring system impacts are fully understoodSupport all stages of delivery including scoping, design, testing and implementationEnsure requirements are validated, approved and managed in line with project governance standards Essential Skills Hands-on experience with Finastra EquationPr