Senior Business Analyst for a banking-sector project: analyzes and models business processes, gathers requirements from stakeholders, writes technical specs for the IT team, and supports Product Owners and Project Managers with backlog and rollout planning. B2B contract up to 148 PLN/h net + VAT, one day per week from the Warsaw office; stack includes JIRA, Confluence, Power BI, SQL, BPMN/UML.