2 days/week at home

Core hours 11–3

Dog friendly

Job Description

Job Description:

Principal Packaging Engineer

Hybrid working – Slough

Salary between £60,000 - £75,000 (dependent on experience) plus annual bonus and amazing benefits

As a Principal Packaging Engineer at Mars, you will lead a series of large change programmes that will help to deliver our packaging change goals whilst contributing significantly to future EU compliance readiness. A high level of collaboration with other functions is essential in order to deliver change with minimal disruption.

We are looking for breakthrough leadership and innovation; you'll come up with fantastic strategies and proposals to sell into the business and then lead the change. This is an amazing opportunity to use your expertise and leave a lasting legacy in our portfolio and organisation!

What are we looking for?

  • Extensive experience of Packaging Development is essential.
  • A deep understanding of materials composition, development cycles and supplier processes is key to success.
  • The ability to manage large strategic packaging change programmes in a structured way, managing risks, costs and aligning cross functional resources proactively.
  • A track record of delivering technical packaging projects across the key formats - rigids, flexibles, cartons and corrugated.
  • We want someone who can work independently and be a team player.

What will be your key responsibilities?

  • Direct leadership of large packaging change projects.
  • Support the Packaging Team through technical development challenges using a combination of technical experience, project management skills and your external network of contacts.
  • Partner with the Global Packaging and Engineering teams where delivery of new materials technologies are required.
  • Partner with Commercial to find and validate new sources of recycled materials and technical papers.
  • Support the testing and introduction new digital technology aimed at improving technical insight, reducing risk and fast-tracking new packaging developments.

What can you expect from Mars?

  • Work with over 130,000 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.

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
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
Employees are very happy with their working location freedom
Employees are very happy with the flexibility in the hours they work
Employees are very happy with the benefits their company offers
Work-life balance
Employees feel that they can switch off quite easily from work
Role modelling
Employees feel that flexible working is part of the culture
Employees feel they have complete autonomy over getting their work done

Additional employee ratings
(these do not contribute to the FlexScore®)

Employees feel that the diversity is good and there are continued efforts to improve it
Employees feel that the culture supports equity and inclusivity well
Employees feel like it is a really great environment to work in
Employees feel very excited about and aligned with the company mission
Employees feel that their salary is good and matches the value they bring

Working at Mars UK

Company employees

4,000 In the UK

Gender diversity (male:female)


Office locations

London, Slough, Waltham, Castle Cary, Birstall, Plymouth

Hiring Countries




United Kingdom

United States

Awards & Achievements

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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