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Mars UK • GBR-Berkshire-Slough | United Kingdom

Senior Shift Production Manager

Employment type:  Full time
Salary:  £53,000 – £66,000 per annum
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Job Description

Job Description:

Senior Shift Production Manager

Location: Slough, UK (on-site full-time, shift pattern 2 days/2 nights/4 off)

Salary: £53,000 - £66,000 (depending on the experience), annual bonus, benefits, shift allowance 30%, pension contribution up to 9% by employer

We are seeking a dynamic and experienced Senior Shift Production Manager to lead and develop a team of up to 40 multi-skilled operational associates. In this pivotal role, you will be responsible for achieving key performance indicators (KPIs) across Safety, Quality, Performance, and People. You will also spearhead improvement initiatives and ensure compliance with Mars Supply Excellence standards.

What are we looking for?

  • Technical degree or Bachelor of Science (B.S.) in Industrial Engineering, Mechanical Engineering, or a closely related engineering discipline is highly desirable.

  • Strong experience of line management is required, preferable in a manufacturing environment, ideally in FMCG or food production

  • Several consistent years of the Operations/Manufacturing Excellence expertise

  • Strong communicator with a demonstrated ability to relate to all people at all levels, from a variety of backgrounds and to confront difficult and challenging situations as required.

  • Preffered: TPM experience

What will be your key responsibilities?

  • Lead, mentor, and develop a high-performing team, fostering engagement and recognition.
  • Drive adherence to effective systems of work, ensuring consistent performance and continuous improvement.
  • Champion improvement projects that enhance operational efficiency and product quality.
  • Utilize and refine standard work systems to empower team members in executing and maintaining high standards.
  • Communicate effectively across all levels of the organization, addressing challenges and promoting a culture of high performance.
  • Leading an operations shift team within a Value Stream to deliver priority KPIs including Safety and Quality & Food Safety through effective prioritisation, escalation and decision-making.
  • This role is also an acting “Emergency Manager”, this role encompasses overall responsibility of the site and is a point of escalation.
  • Providing line management for a team of operations associates; allocating work, managing crewing levels and driving flexible working, conducting training, and ensuring that all attendance, performance and disciplinary matters are dealt with in accordance with company procedures
  • Building a high-performing team through developing associates individually and within the team. Driving the engagement of associates through coaching and impact planning. Developing associates through effective PDP management to ensure functional, team and personal development.
  • Develops and leads factory-wide business communication, working with management and support functions to deliver effective messaging and feedback.
  • Provide clear communication to the team on initiatives within the Value Stream, as well as wider factory and business debriefs.
  • Collaborating within the Value Stream team to lead and partner in Continuous Improvement and OPEX projects, driving improvements in efficiency and other line KPIs.
  • Role model the FMOS process, leading JTMs and root cause analyses and coaching associates through the FMOS process.
  • To work closely with the VSM and value-stream peers to ensure the team has required capability, competence and attitude to succeed in delivering VS objectives; including taking part in internal and external recruitment processes.

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 a company bonus.

Mars is committed to providing access, equal opportunity, and reasonable adjustments for individuals with disabilities, long-term health conditions, or who are neurodiverse during the application and recruitment process. To request reasonable adjustments, complete our Reasonable Adjustment Request Form here.

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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

Estonia

Finland

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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  • To work within, and be a role model for Mars Policies and Practices and the 5P
  • To work closely with other Team Leaders on shift to ensure that resource is deployed efficiently to deliver required shift performance at both line and factory level.
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