Master Data Steward

About the role

At Tarmac, high-quality data underpins operational and analytical excellence.

As a result, we're currently looking to recruit a highly ambitious and enthusiastic Master Data Steward to join our Data & Analytics  this role you'll will play a critical role in ensuring the integrity, consistency, and reliability of the master data that supports our core business processes, reporting, and decision-making across the organisation.
The role is responsible for the compliant creation, maintenance, and ongoing quality of core master data within our ERP and supporting systems.

This includes key data domains such as profit centres, cost centres, general ledger codes, Blackline users, tasks and approval workflows, customer records and query resolution hierarchies, vendor and material masters, and purchase requisition approval workflow data.

Master Data forms the foundation for all transactional activity, and the accuracy of this data is essential to the effective operation of the business.
You'll ensure that master data is created and maintained in line with agreed standards, internal controls, and governance requirements, supporting regulatory compliance and strong financial control.

The role requires close collaboration with Finance, Procurement, Shared Services, IT, and wider business stakeholders to understand data requirements, resolve queries, and ensure master data is available, accurate, and fit for purpose when the business needs it.
This is a hands-on, operational role with a key focus on data quality, consistency, and continuous improvement.

Main responsibilities

In this role you'll:

Create, maintain, and amend master data records accurately and consistently in line with agreed standards, data ownership rules, and compliance requirements
Perform and support internal controls, audits, and assurance activities relating to master data and associated processes
Proactively review, validate, and cleanse master data to ensure ongoing accuracy, completeness, and consistency
Identify opportunities to improve, standardise, and automate master data processes to reduce manual effort and improve data quality
Monitor and report on service performance, including tracking requests against agreed service level agreements (SLAs)
Produce routine reporting on data changes, duplicate records, and inactive data to support control and governance activities
Monitor performance across business units and functions against agreed SLAs and service expectations
Support the collection of internal and external benchmarks to inform continuous improvement
Communicate findings, risks, and improvement opportunities clearly to stakeholders across the business
Experience & qualifications

To be successful in this role you'll need:

To be highly organised and detail-oriented - enjoys working with data and getting things right first time
To be comfortable with structured processes - able to follow defined procedures and standards consistently
To be curious and improvement-focused - keen to learn, develop, and improve how data is managed
To be a clear and confident communicator - able to work with others and explain information in a straightforward way
A demonstrable capability in master data management, including the creation and maintenance of data within ERP and supporting systems
A sound understanding of data quality, governance, and internal controls, with the ability to support audit and compliance requirements
The ability to work effectively within structured, SLA-driven service environments, managing workload and priorities while maintaining high levels of accuracy
An analytical capability to be able to identify data issues, trends, and improvement opportunities
Effective stakeholder communication skills, enabling collaboration with Finance, Shared Services, IT, and business users
To be educated to A-level, or degree level, or equivalent relevant experience
An authorization to work in the UK (Mandatory)
Why Tarmac

We don't just offer a job, we offer a career.

Alongside this role, you'll have access to industry-leading rewards, development opportunities, and a culture that puts people first, including:

Bonus scheme
Enhanced holiday entitlement
Cont…