Site Capacity Planning Manager

AG Barr; Cumbernauld; On-site; GBP 60,000 - 85,000; Full time

Benefits offered by this job

Annual bonus scheme

Defined contribution pension

34 days holiday

Flexible holiday trading

Private Medical Cover

Healthcare Cash Plan

Flexible benefits

Life assurance

Staff discounts

Job summary

AG Barr in Cumbernauld is seeking a Site Capacity Planning Manager to lead the RCCP process, ensuring production aligns with resources and constraints. The role requires managing a team, coordinating with materials planning and site operations, and guiding short-term schedules to drive OTIF and efficiency.

The position is hybrid and permanent, with travel 2–4 times a month. A strong background in MRP/DRP/ERP, Excel, and cross-functional collaboration is essential for success.

Qualifications

• Established manager-level experience in a manufacturing supply chain planning role.
• Hands-on experience with MRP, DRP and ERP systems.
• Advanced spreadsheet proficiency in Excel and Google Sheets.
• Strong knowledge of inventory strategies, stock deployment and core supply chain principles.
• Experience with S&OP cycles and managing supply elements.
• Experience working cross-functionally and with external stakeholders.
• Eligibility to work in the United Kingdom.
• Willingness to travel 2–4 times per month.
• Previous people management experience is a plus.

Responsibilities

• Own the 13-week rough-cut capacity plan (RCCP) to align production requirements with resources and constraints.
• Lead and develop a high-performing team with regular 1:1s focused on performance and growth.
• Partner with materials planning and site operations to ensure availability of key packaging materials.
• Oversee short-term (2-week) production schedules and guide execution of operational plans.
• Manage product lifecycle planning across NPD/EPD initiatives and site optimisation projects.
• Deliver site Supply Planning KPIs and maximise OTIF and cost efficiency.

Skills

People management

Cross-functional collaboration

S&OP knowledge

MRP/DRP/ERP systems

Excel

Google Sheets

Travel willingness

UK work eligibility

Tools

MRP/DRP/ERP systems

Excel

Google Sheets

Job description

Job Title

Site Capacity Planning Manager

Location

Cumbernauld

Contract and Working Pattern

Hybrid, Permanent

About AG Barr

We are all about Being Your Best Barr None and having a career with real Moments that Matter! Employing around 950 people across the UK, we are proud to be a responsible business that takes care of our people, values diversity, gives something back to our communities and works to minimise our environmental impact. For 150 years AG Barr has been building great brands and is home to some of the nation's favourite flavours. At our core is IRN‑BRU, launched in 1901 and still going strong today, the vibrant RUBICON fruit‑based brand, Boost creating every moment better with a caffeine kick, hydration hit or tasty treat, and FUNKIN where real fruit means authentic taste. We also have a number of exciting owned brands within our portfolio including MOMA, which crafts quality oats into great tasting oat drinks and porridges. There's never been a better time to join us!

Responsibilities

• Own the 13-week rough-cut capacity plan (RCCP) to align production requirements with resource, equipment, and operational constraints.
• Lead and develop a high‑performing team, conducting regular 1:1s focused on performance objectives and career growth.
• Partner with materials planning and site operations to ensure full availability of key packaging materials (cans, preforms, glass, and raw ingredients).
• Oversee short‑term (fixed 2‑week) production schedules, guiding the team to execute operational plans efficiently.
• Manage product lifecycle planning across NPD/EPD initiatives while contributing to broader site optimisation projects.
• Deliver site Supply Planning KPIs, collaborating with central deployment and cross‑functional teams to maximise OTIF performance and cost efficiency.

Qualifications / What You'll Bring

• Established manager‑level experience in a similar supply chain planning role within a manufacturing environment.
• Hands‑on experience with MRP, DRP, and ERP systems.
• Advanced spreadsheet proficiency in Excel and Google Sheets.
• Strong knowledge of inventory strategies, stock deployment techniques, and core supply chain principles.
• Experience working with S&OP cycles, including managing the supply element of the S&OP process.
• Experience working cross‑functionally and with external stakeholders.
• Eligibility to work in the United Kingdom.
• Willingness to travel 2‑4 times per month.
• Previous people management experience in small or larger teams is a plus.

Benefits

• Competitive salary bench marked against market rates
• Annual bonus scheme linked to business performance
• Defined contribution pension with Employer Contributions
• 34 days holiday
• Flexible holiday trading
• Flexible cash pot to spend on benefits
• Private Medical Cover
• Healthcare Cash Plan
• Flexible benefits e.g. discounts & cashbacks, gym memberships, technology purchases etc
• Life assurance
• Save as you earn scheme
• Staff sales discount
• Free AG Barr products throughout your working day and staff sales
• Annual salary review
• Ongoing professional development and access to Learning and Development programmes and content
• And much more!

Equal Opportunities

We are an equal opportunities employer and happy to discuss any reasonable adjustments that may be needed for successful candidates with a disability, health or mental health condition.

While we have highlighted our ideal requirements for this role, we are realistic that the successful candidate probably won't meet every single requirement in this advert, but we are big advocates of people growing in role. So even if you don't meet every single requirement, we encourage you to submit an application - you may be just what we are looking for!

To find out more about what it is like to work for AG Barr, please visit our careers platform here.