About Lewis
English
Native or bilingual
Experience
- NESO EnergyPeople Data Consultant (Workday)ENERGY AND UTILITIESDecember 2025 - Today (6 months)London, UK• Providing consultancy data services to an in-flight Workday data migration of ~2500 UK employees, migrating from SuccessFactors & SAP ECC source systems• Overseeing effort to accelerate payroll parallel runs via the use EIBs loads and data reconciliation activities• Reviewing existing plan and data design, migration and validation materials and document any gaps & risks that may negatively affect data or cutover activities• Leading the data catchup for HCM data covering all employee transactions during a 2 month window between Gold build and technical go live
- National GridSuccessFactors Data LeadENERGY AND UTILITIESMarch 2023 - December 2025 (2 years and 9 months)London, UK• Led a team to migrate HCM data as part of a SuccessFactors re-implementation, within a wider People digital transformation programme, covering ~30,000 workers across UK and US.• Accountable for ensuring the solution and data conversion alignment, with frequent reviews of key design documents, configuration updates & change requests.• Led a complex data catchup effort across all employee data during a period with no freeze in place on people data transactions• Oversaw the design and build or a PowerBI data quality dashboard and led the effort to meet data cleanse targets ahead of data migration cycles
- WPPWorkday Global HCM Data LeadPRESS AND MEDIAJuly 2020 - December 2022 (2 years and 5 months)London, UK• Contracted to lead the WPP HCM data migration workstream with a scope spanning 12 countries, ~50K employees and over 50 distinct employee data sources• Accountable for the successful end to end data migration process from point of extract to load into Workday, including managing delivery to plan and managing the risk profile• Defined the data migration approach, partnering with WPP Enterprise data architects and PWC technical leads• Led a team of 8 cluster leads/analysts to build a repeatable extraction, transformation, profiling, and validation process• Led the design and development of profiling tools, macros, and custom reports to accelerate the load and validation process
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Education
- A-LevelGreenhill College1993A-Level
- BSc (Hons)Bournemouth University1997BSc (Hons)