Contractor will perform detailed reconciliations of holdings, transactions and performance outputs between legacy and upgraded FactSet B-One systems, identify and resolve discrepancies, support UAT/parallel runs and post-go-live stabilization, track and document issues, validate data integrity and liaise with product, technology, operations and external vendors to ensure production readiness.
Role Overview
We are seeking an experienced contractor to support a critical programme migrating to an upgraded version of the FactSet B-One performance application. The role will focus on:
- Reconciliation of positions, transactions, and performance outputs across legacy and target systems
- Identification, investigation, and resolution of discrepancies
- Supporting UAT, parallel run, and post go-live stabilisation
The individual will work closely with internal teams and FactSet to ensure outputs are accurate, consistent, and fit for purpose, aligned with defined reconciliation success criteria
Key Responsibilities
- Perform detailed reconciliation of holdings, transactions, and performance outputs, comparing current vs. upgraded systems
- Investigate, explain, and resolve discrepancies, ensuring alignment within agreed tolerances
- Analyse root causes across data, configuration, and calculation logic differences
- Collaborate with SMEs and internal teams (Product, Technology, Operations) to resolve issues
- Track, document, and manage issues through structured logs in line with governance standards
- Support UAT, regression testing, and parallel run validation, including test execution and documentation
- Assist with evidence collection, audit traceability, and production readiness (entry/exit criteria)
- Validate completeness and integrity of key data inputs and support data quality control checks
- Act as a liaison across business, technology, and external project stakeholders, communicating issues and impacts clearly
- Provide post-go-live support, including issue investigation, monitoring, stabilisation, and continuous improvement
Key Skills & Experience
Essential
- Strong experience in investment performance measurement / attribution
- Hands-on experience with Position and transaction reconciliation
- Experience with data and calculation validation across systems
- Experience of system migrations, implementations, or parallel runs
- Strong analytical and problem-solving skills
- Advanced Excel skills (data analysis / reconciliation)
Desirable
- Experience with FactSet B-One, Aladdin or similar platforms
- Knowledge of asset management data flows (ABOR, positions, transactions)
- Knowledge of performance calculation methodologies
- Familiarity with SQL / data extraction tools
- Experience working with system migration
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