Integration Specialist – Workforce Management

WFM Integration Specialist London UKG / Kronos / Workday / SAP / ATOSS Overview We are currently supporting a large-scale transformation programme seeking an experienced WFM Integration Specialist with strong expertise across workforce management, payroll, HRIS, and scheduling ecosystems. This role will play a key part in designing, building, and supporting integrations that enable accurate workforce data processing, payroll outputs, operational reporting, and scheduling functionality across enterprise platforms. The successful candidate will work closely with both technical and business stakeholders to ensure integrations are delivered securely, efficiently, and in line with operational requirements. This is an excellent opportunity to join a fast-paced programme environment with significant transformation activity and long-term project scope. Responsibilities Understand integration requirements and translate them into solutions Build and support interfaces including: HR master data to time systems (workers, assignments, cost centres, org structures) Time results to payroll engines (hours, premiums, exceptions, retro adjustments) Scheduling data exchange (planned shifts, changes, absences interplay) Implement secure integration patterns (API, file, middleware), including encryption, error handling, retries, and monitoring Develop reconciliation and control reports to ensure end-to-end completeness and accuracy Support SIT/UAT and payroll validation cycles; triage defects across systems Produce integration design documentation, mappings, runbooks, and operational handover Deploy and release to production environment Experience Required 3+ years hands-on development experience in HR, Payroll and Time ecosystems (Kronos / UKG, SAP, Workday SuccesFactors, ADP, Strada, ATOSS, Dayforce) Understanding of payroll, HRIS, time and attendance, and scheduling data Strong skills in integration tooling (e.g., CPI/MuleSoft/Boomi) and data formats (JSON/XML/CSV). Experience with authentication/authorisation, logging, and operational support Ideally also an understanding of: Payroll processing cycles and time valuation outputs (premiums /overtime /allowances) Details: £750 P/D Hybrid role (2 days on-site)