Business Analyst - AP Invoice Processing Transformation

Business Analyst (SME,Testing) - AP Invoice Processing Transformation (Basware) - Hybrid Daily rate: £350 - £450 (inside IR35) London (3 days on-site per week) Contract role - Immediate start preferred My client is looking for an experienced Business Analyst with strong hands-on Accounts Payable (AP) invoice processing expertise to join a high-priority, GPO-led transformation programme. This role requires a proactive, detail-oriented individual who can quickly immerse themselves in existing test artefacts, take ownership of end-to-end testing, identify defects, and document system and process behaviour.

You will also act as a Subject Matter Expert (SME) to support operational training and handover. You will work closely with GPO leadership, SMEs, and BPO/testing teams to ensure robust testing coverage and readiness for go-live.

Key Responsibilities Own and execute end-to-end invoice processing testing, covering:
Invoice capture (OCR) Validation Approval workflows Payment processing Review and enhance existing test scripts; design new test cases where gaps are identified Independently investigate exceptions and defects, documenting clear findings and driving resolution Produce high-quality process documentation, including:
End-to-end flows System behaviours Exception scenarios Known issues Collaborate with GPO leads, SMEs, and BPO/test teams to ensure consistent understanding and coverage Act as an SME for AP invoice processing, supporting:
Knowledge transfer Operational readiness Training materials Provide clear, actionable feedback to stakeholders Support go-live readiness activities Attend regular stand-ups and provide concise status updates Required Skills & Experience (Must-Have) Proven hands-on experience in Accounts Payable invoice processing (operations or transformation programmes) Strong Business Analyst skillset, including:
Requirements capture Test script creation & execution Process documentation Experience testing:
Invoice capture/OCR tools Downstream AP or ERP systems Ability to work independently, take ownership, and drive progress without constant oversight Strong analytical mindset with curiosity to:
Investigate end-to-end processes Identify edge cases and exceptions Excellent communication skills:
Clear defect reporting Structured documentation Comfortable working on-site in London (3 days per week) Must have right to work in the UK

Desirable Experience

Experience with SAP or other ERP AP modules Background in GPO-led or shared services transformation programmes Experience working with third-party BPO providers or offshore testing teams
* Rates depend on experience and client requirements