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About the Role

As a Data Steward in WPP’s Enterprise Technology Data team, you will be responsible for the hands-on administration and maintenance of master data across enterprise data domains. You will ensure golden records are accurate, source system mappings are maintained, and data governance standards are consistently applied, directly impacting the trustworthiness and completeness of master data.

Responsibilities

Execute day-to-day stewardship activities including reviewing, approving, and correcting master data records.
Maintain and curate golden records, ensuring accuracy and completeness.
Investigate and resolve match conflicts, potential duplicates, and merge exceptions.
Process new entity creation requests, validating source data before golden record creation.
Manage and maintain mappings between source system entities and golden master records.
Support the onboarding of new agencies and source systems by executing mapping activities and validating initial data loads.
Maintain reference data configurations, ensuring alignment across source systems.
Apply data classification standards to master data entities.
Review and correct AI-generated data classifications.
Follow and enforce stewardship workflows including exception handling, approval processes, and escalation procedures.
Maintain accurate documentation of entity mappings, transformation rules, hierarchy structures, and stewardship decisions.
Act as the human-in-the-loop for AI-assisted matching and entity resolution.
Review and validate AI-generated mapping recommendations during source system onboarding.
Provide feedback on AI model outputs to support continuous improvement.
Work with AI-driven anomaly detection alerts, investigating flagged records and determining appropriate stewardship actions.
Monitor data quality dashboards and alerts, investigating exceptions and applying remediation actions.
Execute data quality checks across master data entities, documenting findings and tracking resolution.
Maintain and update data quality rules as business requirements and source systems evolve.
Provide first-line support for master data issues raised by downstream consumers and business users.
Contribute to operational reporting on stewardship volumes, exception trends, match rates, and resolution times.
Support data migration and reconciliation activities during source system onboarding and platform changes.

Requirements

Experience in a data stewardship, data administration, or master data management role.
Practical understanding of MDM concepts including golden records, matching, survivorship, and entity resolution.
Proficiency in SQL for data investigation, validation, and reporting.
Understanding of data governance principles including data classification, ownership, and stewardship workflows.
Willingness to work with AI and machine learning tools as part of day-to-day stewardship operations.
Attention to detail with the ability to identify and resolve data discrepancies methodically.
Strong organisational skills with the ability to manage multiple concurrent stewardship tasks and priorities.
Good communication skills with the ability to document and explain findings clearly to both technical and business audiences.
Self-motivated with a proactive approach to identifying and resolving data problems.
Enthusiasm for developing expertise in master data management, data governance, and AI-assisted data operations.

Skills

Master data management
Data governance
Data stewardship
Data administration
MDM concepts (golden records, matching, survivorship, entity resolution)
SQL
Data classification
AI and machine learning tools
ERP or HCM data (Workday, SAP, Dynamics, or similar)
Communication skills
Organisational skills

Location

Remote

Work Type

Hybrid
Full-time

Experience Level

Mid-level

About the Company

WPP is the trusted growth partner for the world’s leading brands.
We unite cutting-edge media intelligence and data solutions, world-class creativity, next-generation production, transformative enterprise solutions and expert strategic counsel in a single company – powered by exceptional talent and our agentic marketing platform, WPP Open, to help our clients navigate change, capture opportunity and deliver transformational growth.
We work with the world's most valuable brands and have global reach across 100+ markets, with deep local expertise.
Our people are the key to our success. We're committed to fostering a culture of creativity, belonging and continuous learning, attracting and developing the brightest talent, and providing exciting career opportunities that help our people grow.
For more information, visit WPP.com.

Equal Opportunity

WPP is an equal opportunity employer and considers applicants for all positions without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or disability status.
We are committed to fostering a culture of respect in which everyone feels they belong and has the same opportunities to progress in their careers.