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Mars UK • Slough, Berkshire, United Kingdom

Senior Packaging Engineer - 12 Months Fixed Term Contract

Salary:  £58,000 – £61,000 per annum

Job Description

Job Description:

Senior Packaging Development Engineer - Global

​12 Months Fixed Term Contract

Location: Slough + Hybrid Working

Salary: £58,000- £61,000+ Bonus + Benefits

Join our Global Packaging team and help shape the future of sustainable packaging at Mars. You’ll drive packaging development for some of the world’s most loved snacking brands—turning bold ideas into real-world impact. Working across markets and functions, you'll deliver high-quality, efficient, and consumer-centric solutions that support our growth and sustainability goals.

What are we looking for?

  • Proven experience in packaging development engineering across 1st wraps, overwraps, cartons, and cases.
  • Strong project management skills, with the ability to set priorities and adapt to changing business needs.
  • Skilled collaborator, confident working in cross-functional and multicultural teams.
  • Experience with modelling and simulations is a plus.

What will be your key responsibilities?

  • Proven experience in packaging development engineering across 1st wraps, overwraps, cartons, and cases.
  • Strong project management skills, with the ability to set priorities and adapt to changing business needs.
  • Skilled collaborator, confident working in cross-functional and multicultural teams.
  • Experience with modelling and simulations is a plus.

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.
  • Best-in-class 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.
  • Access Rover, Mars UK’s new hub for Rewards, Offers, Vouchers, and Recognition, featuring cashback, exclusive deals, shopping discounts, and a recognition wall to celebrate colleagues' achievements.

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

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Mars is an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability status, protected veteran status, or any other characteristic protected by law. If you need assistance or an accommodation during the application process because of a disability, it is available upon request. The company is pleased to provide such assistance, and no applicant will be penalized as a result of such a request.

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
LinkedIn 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

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Awards & Accreditations

1st – Family Friendly

1st – Family Friendly

Flexa awards 2025
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1st – Large companies

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3rd – Large companies

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Flexa100 2023
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Industry awards 2022

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