Factory Packaging and RM Planner

Job Description:

Castle Cary, Somerset

£39,300 \- £44,300 DOE

Performance Bonus Exceptional Benefits

37\.5 Hrs per week – Mon – Fri

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 aMars 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 were here to support you every step of the way.

The Role

The Planner is responsible for ensuring uninterrupted availability of Raw Materials and Packaging Materials to support factory operations while balancing inventory, warehouse capacity, and working capital objectives.

The role manages material replenishment, supplier coordination, and inbound material flow by working closely with Commercial, Regional Planning, Production Planning, Logistics, suppliers, and logistics partners to secure production continuity.

The role acts as the key stakeholder for material planning parameters and inventory policies while ensuring compliance with Safety, Quality, and Food Safety standards

⭐ 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


• Free perks on site: parking, Lavazza coffee, tea, fruit twice a week, and access to our employee shop

• Experience in Supply Chain Planning, Material Planning, Logistics, Inventory Management, or a related function.


• Strong analytical and problem\-solving skills with the ability to identify and resolve operational challenges.


• Effective communication and stakeholder management skills, with the ability to build collaborative working relationships.


• High attention to detail and ability to manage multiple priorities in a fast\-paced environment.


• Team\-oriented with a growth mindset, proactive approach, and strong sense of ownership.


• Commitment to Safety, Quality, and Food Safety standards and best practices.

• Develop and manage material replenishment plans to ensure timely material availability and support uninterrupted production.


• Monitor material supply, inventory levels, and planning parameters, proactively identifying risks and implementing mitigation actions.


• Manage inventory performance, including stock accuracy, excess and obsolete inventory, and continuous improvement initiatives.


• Coordinate with suppliers, procurement, logistics, and warehouse teams to ensure efficient inbound material flow and issue resolution.


• Track inbound shipments, escalate supply, quality, or logistics risks, and drive corrective actions to minimise operational impact.


• Support compliance, traceability, customs processes, and operational readiness while acting as a key planning contact within the factory.

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


• Be part of a purpose\-driven companyshaping “the world we want tomorrow”


• Access world\-classtraining development from day one


• Join a company withan industry\-leading salary and benefits package

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