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Mars UK • NLD-South Holland-Oud-Beijerland | OLN-NV MARS Belgium SA | VEG-Mars Nederland B.V. | Netherlands

Operations Manager

Employment type:  Full time
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Job Description

Job Description:

Segment: Food & Nutrition

Location: Oud-Beijerland

Contract type: fulltime, permanent

At Mars Food & Nutrition, we are committed to delivering better food today and building a better tomorrow. As Operations Manager, you play a key role in bringing this purpose to life by leading our manufacturing and on-site logistics operations, ensuring the safe, efficient and cost-effective production of high-quality products.

In this role, you lead with a strong focus on people, fostering an environment where associates feel empowered, engaged and supported in their development. You drive continuous improvement, performance and quality, while embedding operational excellence across all areas of the site.


As part of the site leadership team, you collaborate closely with Safety, Quality, Technical, R&D and Commercial teams. Together, you deliver on business priorities and contribute to the long-term growth and success of the Food & Nutrition segmen

What will be your key responsibilities?

  • Lead manufacturing operations, ensuring safe, efficient, and cost-effective production while meeting quality, service, and performance targets.
  • Drive operational excellence by championing the site's operational framework, continuous improvement initiatives, Lean Manufacturing, TPM, and other performance enhancement programs.
  • Lead, coach, and develop high-performing teams by fostering a culture of engagement, accountability, collaboration, and continuous learning.
  • Ensure the highest standards of food safety, product quality, HACCP compliance, health and safety, and regulatory adherence across all operations.
  • Establish and monitor operational goals, budgets, KPIs, and performance standards, taking corrective actions as needed to achieve business objectives.
  • Partner with Engineering, Quality, Supply Chain, R&D, and Commercial teams to implement process improvements, drive innovation, and deliver strategic business priorities.
  • Oversee technical troubleshooting, maintenance activities, and technology advancement initiatives to improve operational reliability, efficiency, and product quality.
  • Contribute to site and value stream strategy as a member of the leadership team and act on behalf of the Plant Director when required.

What are we looking for?

  • Degree or equivalent qualification in Engineering, Food Science or Business-related studies.
  • Minimum 8 years of manufacturing or operations experience, including at least 3 years in a managerial role.
  • Experience and passion driving Lean Manufacturing, TPM, Operational Excellence, or equivalent methodologies.
  • Technical knowledge of manufacturing processes, equipment, controls and products.
  • Knowledge of food safety, quality systems, HACCP, and regulatory compliance.
  • Demonstrated people leadership and team management skills.
  • Knowledge of HSE requirements and employment legislation.
  • Excellent communication and interpersonal skills, with the ability to work effectively with individuals at all levels and across functions.
  • Fluency in English and Dutch is required.

What can you expect from Mars?

  • Work with diverse and talented Associates, all guided by the Five Principles.
  • Join a purpose driven company, where we’re striving to build the world we want tomorrow, today.
  • A strong focus on learning and development support from day one, including access to our in-house Mars University.
  • An industry competitive salary and benefits package, including company bonus.
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Company benefits

Open to part-time employees
Open to job sharing
Open to compressed hours
Sabbaticals
Enhanced maternity leave – 26 weeks at 90% pay
Enhanced paternity leave – 26 weeks at 90% pay
24 days annual leave + bank holidays
“Pawternity” leave
Pregnancy loss leave
Bank holiday swaps
Shared parental leave
Adoption leave
Family health insurance
Pregnancy support
Neonatal leave
Faith rooms
Meditation space
Dog friendly office
Dog friendly co-working space
Annual bonus
Employee discounts
Cinema discounts
Referral bonus
Joining bonus
Cycle to work scheme
Electric Car Salary Sacrifice
Enhanced pension match/contribution
Theme park discounts
Lunch and learns
In house training
Learning license
Studying sabbaticals
Open to part time work for some roles

Working at Mars UK

Company employees:

4,000 In the UK

Gender diversity (m:f):

57:43

Hiring in countries

Argentina

Australia

Austria

Belgium

Brazil

Bulgaria

Canada

China

Czechia

Denmark

Egypt

France

Germany

Awards & Accreditations

1st - Most Family Friendly Company

1st - Most Family Friendly Company

Flexa awards 2026
3rd - Best Workplace Benefits

3rd - Best Workplace Benefits

Flexa awards 2026
Most loved - Large companies

Top 5 - Most loved - Large companies

Flexa awards 2026
Best Work-Life Balance

Top 10 - Best Work-Life Balance

Flexa awards 2026
1st - Most Family Friendly Company

1st - Most Family Friendly Company

Flexa awards 2025
2nd – Pet Friendly

2nd – Pet Friendly

Flexa awards 2025
Most Flexible Company

Top 5 - Most Flexible Company

Flexa awards 2025
Most Inclusive Company

Top 5 - Most Inclusive Company

Flexa awards 2025
Best Work-Life Balance

Top 10 - Best Work-Life Balance

Flexa awards 2025
Best Career Progression

Top 10 - Best Career Progression

Flexa awards 2025
Best Workplace Culture

Best Workplace Culture

Flexa awards 2025
Best Workplace Benefits

Best Workplace Benefits

Flexa awards 2025
1st – Large companies

1st – Large companies

Flexa100 2024
Consumer Goods

Consumer Goods

Industry awards 2023
3rd – Large companies

3rd – Large companies

Flexa100 2023
Retail & Ecommerce

Retail & Ecommerce

Industry awards 2022

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