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Mars UK • GBR-Batley-West Yorkshire | United Kingdom

Start Up Manager

Employment type:  Full time
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Job Description

Job Description:

Start-Up Manager

Location: Birstall, Leeds

Salary: Competitive + Bonus + Benefits

Type: Full-time, Permanent

The Role

We’re looking for a Start up manager to play a pivotal role in delivering new production assets and driving performance across a fast-paced pet food manufacturing environment.

You’ll lead commissioning, validation, and start-up of equipment while owning the site’s loss analysis agenda—identifying where we lose efficiency, speed, and quality, and turning those insights into high-impact improvement projects.

This role is critical to ensuring our lines start strong, run efficiently, and continuously improve in a high-volume, high-demand setting—helping us deliver the quality pet nutrition that millions of pets rely on every day.

What You’ll Be Doing

  • Lead commissioning, validation, and start-up (CVS) of lines/ equipment and new product development
  • Drive safe, right-first-time start-ups with a strong focus on quality, food safety, and compliance
  • Own and lead site-wide loss analysis across key metrics (OEE, waste, downtime, speed loss)
  • Identify and prioritise the biggest losses impacting throughput, cost, and service
  • Build and manage a pipeline of focused improvement projects aligned to business priorities
  • Lead delivery of loss reduction initiatives—from data analysis through to shopfloor implementation and sustainment
  • Apply structured problem-solving tools (RCA, 5 Whys, DMAIC) to eliminate root causes of chronic losses
  • Champion TPM principles, embedding a culture of continuous improvement and operator ownership
  • Work closely with production, engineering, and maintenance teams to improve line reliability and efficiency
  • Support rapid ramp-up of new lines to target speeds, waste, and quality standards
  • Support the delivery of site innovation projects (NPD/NPI) by identifying, monitoring, and escalating risks during relevant innovation stage‑gate milestones across issues pertaining to People, Supply Chain, Engineering, Quality, H&S

What We’re Looking For

  • Engineering or technical degree (or equivalent experience)
  • Strong experience in FMCG or high-volume manufacturing environments (food/pet food preferred)
  • Proven track record in commissioning/start-up and driving line performance improvements
  • Deep understanding of OEE, loss trees, and waste reduction in a production setting
  • Experience delivering measurable improvements in efficiency, waste, and downtime
  • Knowledge of TPM, Lean, or Six Sigma methodologies
  • Strong presence on the shopfloor with the ability to engage and influence operators and leaders
  • Data-driven, results-focused, and comfortable working at pace

Why Join Mars Petcare?

  • Be part of a purpose-driven business: A Better World for Pets
  • Work on products that make a real difference to the health and happiness of pets globally
  • Join a company guided by the Five Principles: Quality, Responsibility, Mutuality, Efficiency, and Freedom
  • Be empowered to own both start-up success and ongoing operational performance
  • Access strong development opportunities within a global organisation that invests in its people
  • Contribute to industry-leading standards in food safety, quality, and sustainability

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
Neo-natal 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

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Office Locations

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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