Business Analyst - AP Invoice Processing Transformation

About the role

We are seeking an experienced Business Analyst to join a high‑priority, GPO‑led transformation programme focused on AP invoice processing (Basware). The role is hybrid, requiring three days on‑site per week in London, and involves end‑to‑end testing, defect management and knowledge transfer to support go‑live readiness.

Key responsibilities

• Own and execute end‑to‑end testing of invoice capture (OCR), validation, approval workflows and payment processing.
• Review, enhance and create test scripts to fill coverage gaps.
• Investigate exceptions and defects, document findings and drive resolution.
• Produce high‑quality documentation of process flows, system behaviours, exception scenarios and known issues.
• Collaborate with GPO leads, SMEs and BPO/testing teams to ensure consistent understanding and coverage.
• Act as a Subject Matter Expert for AP invoice processing, supporting operational training and hand‑over activities.

Required profile

• Proven hands‑on experience in Accounts Payable invoice processing, either in operations or transformation programmes.
• Strong Business Analyst skillset with ability to capture requirements, create test scripts and produce clear documentation.
• Ability to work independently, take ownership and drive progress without constant supervision.
• Excellent analytical mindset and curiosity to investigate end‑to‑end processes and edge cases.
• Right to work in the UK and comfortable with a hybrid on‑site schedule.

Required skills

• Accounts Payable invoice processing
• OCR (optical character recognition) tools
• Basware
• SAP or other ERP AP modules
• Test script creation
• Test execution
• Process documentation

What we offer

• Hybrid working (3 days on‑site in London)
• Competitive daily rate of £350‑£450 (inside IR35)
• Opportunity to work on a high‑visibility transformation programme