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Mars UK • USA-Texas-Waco | USA-Tennessee-Jackson | United States of America

Principal Project Engineer

Employment type:  Full time
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Job Description

Job Description:

Principal Project Engineer

The Principal Project Engineer will be a project manager for the larger and more complex projects executed by the Processing or Packaging team. This position will be responsible for all aspects of planning and executing projects from ideation to project closure. Depending on business needs you will potentially lead projects in process areas, buildings and infrastructure, general manufacturing processes, and packaging systems. Own the overall leadership of major capital projects through the Mars Snacking Engineering Execution Standard for executional excellence in project delivery. These roles will either be based out of Waco, TX or Jackson, TN, or require significant travel to all our major sites across North America.

What are we looking for?

  • Bachelor of Science in engineering; an advanced degree in engineering, MBA or PMP certification considered a plus.

  • Minimum of 10 years of experience in a comparable technical position - food, beverage, pharmaceutical or related industry preferable.

  • In-Depth understanding of project management principles and general knowledge of engineering disciplines: Building, Infrastructure, Civil, Utilities, Process, Packaging, Electrical and Construction.

  • In-depth understanding of functional engineering area of expertise – process or packaging manufacturing in food or related industry.

  • Team skills - high performance team experience.

  • Excellent communication, listening and influencing skills.

  • Good innovation management.

  • Thrives working in ambiguous situations.

  • Ability to travel approximately 50% or more requirement depending on project demands.

What will your key responsibilities be?

  • Develop and execute projects of $50M+ that meet business objectives, while ensuring compliance with safety, quality, security and environmental standards.

  • Member of the Engineering Leadership team, focused on upskilling the process engineering team in various process technologies and project management execution.

  • Develop standards for equipment, systems and engineering processes and collaborate with other senior engineers and global technical teams.

  • Work with R&D and global technical teams to support the development of technology platforms for providing a sustained technical advantage.

  • Participate in staffing and management strategy for engineering associates that may be distributed across multiple Mars Snacking sites.

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.

Apply now

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

France

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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