Lead Business Analyst; Treasury Management Systems

Lead Business Analyst – Treasury Management System (Contract)

Duration: Initial 3 Months with view to extend

Contract Type: Day Rate (Inside IR35)

Primark is seeking a Lead Business Analyst to support the implementation and evolution of our global Treasury ecosystem
, centred on a new Treasury Management System (TMS) and its surrounding integrations. This role is critical in ensuring Treasury, Finance, Tax, and Technology are aligned across a highly regulated, multi‑system environment.

You’ll work across Primark and our parent company, carrying out significant requirement gathering
, validating existing BA documentation, and challenging assumptions with confidence. A strong financial background is essential.

• Lead end‑to‑end requirement gathering across Treasury, Finance, Tax, AP and external partners
• Validate and refine existing BA documentation, ensuring accuracy and completeness
• Analyse Treasury processes (payments, cash visibility, FX, confirmations, accounting, reporting)
• Define system interactions, data flows, and integration requirements across the TMS landscape
• Identify dependencies, risks, and control gaps, ensuring visibility for delivery teams
• Support testing and validate outputs against Treasury and Finance expectations
• Act as the functional expert for Treasury components during delivery and early life support
• Produce high‑quality artefacts: BRDs, functional specs, process flows, impact assessments
• Collaborate with Product Owners, Engineers, SIs, and vendors to resolve requirement gaps

• Proven experience as a Lead Business Analyst in Treasury, Finance Systems, or Banking
• Strong understanding of Treasury processes: cash management, payments, FX, confirmations, bank statements, accounting flows
• Experience working in integration‑heavy, multi‑system environments
• Ability to challenge stakeholders confidently, backed by strong financial knowledge
• Excellent communication skills — able to simplify complex issues without losing accuracy
• Comfortable working with ambiguity and progressively shaping scope
• Strong stakeholder engagement across Finance, Treasury, Technology, and external partners

• Treasury Management Systems (e.g., FIS Integrity)
• Banking connectivity & payment platforms
• Confirmation/matching tools (e.g., Finastra)
• Regulatory reporting (e.g., Regis TR)
• API & file‑based integrations

You’ll be shaping and stabilising a full Treasury ecosystem
, not just a standalone TMS. Success depends on ensuring upstream/downstream integrations, controls, and visibility requirements are fully understood and correctly implemented.