Mars
Master Data Controller and Key User

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Job Description
Master Data Controller & Key User
📍 UK - Castle Cary - Hybrid working
📍 Europe (France, Germany, Netherlands, Belgium, Poland, Spain, Italy)
💷 UK £ 39.500 - £ 49.500 Dependent on experience
🎁 + Performance Bonus & Exceptional Benefits
🕒 37.5 Hrs per week – Mon – Fri
📝 Fixed Term 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.
Reasons to use Rodeo
I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?
Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.
Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.
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Grad scheme, placement, apprenticeship? Not sure what you want yet — that's fine. Your agent talks it through with you and turns "I have no idea" into a shortlist.
Graduate Consultant — 2026 Scheme
Why you're a good match
StrongYour economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.
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Every day your agent scans the market matching roles against what actually matters to you, not just keywords on a CV.
Why you're a good match
You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.
Experience fit
Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.
Only hits
No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.
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.


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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
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