Master Data Controller and Key User

Mars, Incorporated and its Affiliates; Castle Cary; Hybrid; GBP 40,000 - 50,000; Full time

Benefits offered by this job

Private healthcare

Parental leave

Pension

Life assurance

Gym membership

Annual leave

Job summary

Mars, Incorporated UK Castle Cary hub is hiring a Master Data Controller & ERP Key User on a 12-month fixed-term contract, hybrid working. You will maintain end-to-end master data across major European customers and act as the Navision ERP Key User, supporting daily operations and system improvements.

Ideally you bring experience with ERP systems (Navision/SAP/Oracle), master data management, EDI, advanced Excel, and fluent English. French is a plus as the role collaborates across Europe.

Qualifications

• Experience in a Supply Chain, Logistics, Master Data, or Operations role, ideally within an FMCG environment.
• Hands-on experience working with ERP systems, preferably as a Key User or Super User.

Responsibilities

• Maintain accurate and aligned master data across customer and internal systems, ensuring uninterrupted order processing and supply chain operations.
• Collaborate with key European customers to manage product catalogues, pricing, logistics parameters, and promotional data.
• Lead master data activities for new product launches, product changes, and lifecycle management to ensure seamless market introduction.
• Act as the Navision ERP Key User, providing first-line support, troubleshooting system issues, and driving continuous system improvement.
• Manage EDI integrations and system interfaces, resolving data transmission issues and ensuring effective communication with customers and partners.
• Coordinate system testing, upgrades, and enhancement projects while representing the business within the European ERP Key User community.

Skills

Supply Chain

Master Data

ERP Systems

Excel

Data governance

EDI processes

UAT testing

French language

English fluency

Tools

Navision ERP

SAP

Oracle

Job description

Job Description:

Master DataController &Key User

UK-Castle Cary-Hybrid working

Europe (France, Germany, Netherlands, Belgium, Poland, Spain, Italy)

UK£39.500-£ 49.500Dependent on experience
+ Performance Bonus & Exceptional Benefits

37.5 Hrs per week – Mon – Fri

FixedTerm Contract– 12 Months

Why Join Us?

We care about the world and your future. Mars offers competitive compensation and benefits along with some great perks, like fun freebies and best-in-class development. As a Mars Associate, you have our ongoing commitment to your growth and development as you work across our world-famous brands. The world we want tomorrow starts with how we do business today, and we’re here to support you every step of the way.

The Role

Royal Canin is embarking on a major business transformation programme, introducing new technology, standardised processes, enhanced data and analytics, and dedicated change management to support future growth.

As part of the first implementation wave in 2027, the European Key Accounts (EKA) team is seeking a Master Data Controller & ERP Key User to provide critical operational support during the transition.

This role combines responsibility for maintaining accurate end-to-end master data across major European customers with acting as the key user for the Microsoft Dynamics Navision ERP system. Working with pan-European stakeholders in a fast-paced, entrepreneurial environment, you will support daily operations, drive system improvements, lead technical projects, and play a key role in ensuring business continuity throughout the transformation journey.

What’s in it for you?

• Career growth opportunities with structured development & Mars University

• Private healthcare + equal parental leave

• Generous pension (up to 9% contribution)

• Life assurance (4x salary)

• Gym membership & wellbeing support

• Annual leave starting at 24 days, rising to 32 with service

What We’re Looking For

• Experience in a Supply Chain, Logistics, Master Data, or Operations role, ideally within an FMCG environment.

• Hands-on experience working with ERP systems, preferably as a Key User or Super User (Navision, SAP, Oracle, or similar).

• Strong understanding of master data management, including product data, GTINs, GS1 standards, and data governance principles.

• Knowledge of EDI processes and system integrations, with the ability to diagnose and resolve data and transaction issues.

• Experience supporting system testing, upgrades, and User Acceptance Testing (UAT) activities.

• Advanced Microsoft Excel skills, with strong analytical capabilities and excellent attention to detail.

• Fluent English (written and verbal) is essential; French language skills would be advantageous.

Key Responsibilities

• Maintain accurate and aligned master data across customer and internal systems, ensuring uninterrupted order processing and supply chain operations.

• Collaborate with key European customers to manage product catalogues, pricing, logistics parameters, and promotional data.

• Lead master data activities for new product launches, product changes, and lifecycle management to ensure seamless market introduction.

• Act as the Navision ERP Key User, providing first-line support, troubleshooting system issues, and driving continuous system improvement.

• Manage EDI integrations and system interfaces, resolving data transmission issues and ensuring effective communication with customers and partners.

• Coordinate system testing, upgrades, and enhancement projects while representing the business within the European ERP Key User community.

What You Can Expect from Mars

• Work alongside 130,000+ Associates worldwide guided by our Five Principles

• Be part of a purpose-driven company shaping “the world we want tomorrow”

• Access world-class training & development from day one

• Join a company with an industry-leading salary and benefits package