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