For our client, a global bank in Zurich, we are seeking a technically oriented Business Analyst to support the integration of its Securities Finance Trading platform with a new Core Banking system.WORKLOAD100%WORKPLACEZurich / Remote (only from Switzerland)START DATEASAPEND DATE31.07.2026REFERENCE3427TYPEContractingPlease note that due to applicable Swiss legislation, we can only consider applications from Swiss citizens, EU citizens, and individuals with a valid work permit.Remote work from abroad is not possible.Tasks
Define and validate interface requirements, support solution design and testing, and ensure seamless connectivity between systems
Analyse and document end-to-end interface requirements between the Securities Finance Trading platform and the new Core Banking system
Specify data mappings, transformation rules, and message formats to enable automated trade and cash flow processing
Work closely with developers and solution architects to ensure accurate and timely implementation of system interfaces
Produce high-quality functional documentation, including business requirements, data field definitions, and user stories
Support planning and execution of testing activities (SIT/UAT), including test case preparation, execution tracking, and defect triage
Participate in project meetings, progress reviews, and technical walkthroughs to maintain alignment with programme objectives
Coordinate with internal stakeholders to validate assumptions, clarify requirements, and manage dependencies impacting interface delivery
Requirements
Proven experience as a Business Analyst in system integration or banking technology projects
Strong understanding of trading platforms and post-trade workflows, especially in securities finance (e.g., lending, borrowing, and repo)
Practical experience in data mapping, message design, and working with APIs or message queues
Ability to produce clear, well-structured documentation for both technical and business audiences
Familiarity with Agile methodologies and tools such as JIRA and Confluence
Prior involvement in core banking implementations or platform transitions within capital markets is a strong plus
Comfortable working in complex system landscapes with both batch and real-time interfaces
Fluency in English and German
Soft Skills
Excellent communication and stakeholder management skills across both technical and business functions
Self-driven, detail-oriented and able to operate effectively in a delivery-focused role
