We are seeking multiple Senior Business Analysts to support critical transformation and IT initiatives within a Public sector client. You will work across a range of complex projects including financial systems, regulatory platforms, and data-driven initiatives, requiring strong functional and technical analysis expertise. Experience Required: Minimum 10 years relevant experience. Your responsibilities Perform detailed functional analysis to define business and user requirements Translate business needs into clear technical specifications Collaborate with project managers, developers, and stakeholders Support IT project delivery from analysis through to implementation Test and validate system outputs against requirements Produce and maintain high-quality documentation Your profile MUST-have skills & experience: 10 years as a Business Analyst in complex IT environments Strong analytical and problem-solving capabilities Proven experience with: Functional architecture Use cases Data modelling Functional requirements documentation Strong knowledge of UML and BPMN Experience facilitating workshops and gathering requirements Experience working in Agile environments and testing cycles MVP (Minimum Viable Product) delivery exposure English (mandatory) Nice-TO-have skills: French or Dutch Python UI/UX expertise BI tools experience Agile Scrum methodology Scrum Master experience or certification Public sector experience Eligibility requirements: Senior-level profile (10 years experience) Right to work in Belgium (EU or valid permit) Available from June 2026 Working conditions 2-3 days onsite in Brussels Flexible depending on project needs 12-month contract