< Back to search

2 days/week at home

Core hours 11–3

Dog friendly

Apply now

Job Description

Job Description:

The Portfolio Management Director reports into the Senior Director, One MGS Global Portfolio. The Portfolio Management Director will be responsible for defining and continuously tracking the portfolio of programs and projects that One MGS delivers on behalf of Segments, Mars Corporate and MGS. This includes maintaining an effective governance process to manage incoming demand, prioritizing projects against a prioritization framework, ensuring projects are adequately resourced and funded so that the resulting portfolio is feasible.

What are we looking for?

  • In depth experience of Portfolio Management.
  • Previous experience within a global services function (preferred).
  • Experience in leading a high performing teams in a matrixed global environment as well as developing individual talent.
  • Comfort working across multiple, complex portfolios simultaneously, often with competing demands.
  • Adept at managing stakeholders at various senior levels in the organization through strong communication, influencing and storytelling skills.
  • Ability to resolve escalated issues and problems quickly and independently with both internal and external stakeholders, and third-party vendors.
  • P30 or Management of Portfolio certification or equivalent required.

What will be your key responsibilities?

  • Partner with and effectively manage our customers and stakeholders from the Segments, Mars Corporate and MGS. Act as the single point of contact for all incoming project requests. Ensure an understanding of the project details, including benefits, cost, timings, and resource requirements -- and as appropriate be willing to push back and say “no” based on an assessment of anticipated project benefits (or lack thereof), conflicting priorities, resource limitations, etc.
  • Design, implement, support facilitation of and continuously improve the One MGS Portfolio Design Boards including assessing new demand, financial management and resource management as required.
  • Build a pipeline of potential projects with our customers to enable forward planning and prioritisation decisions to be made.
  • Own the single source of truth of all approved programmes and projects, new demand and the backlog for the One MGS portfolio to be stored in the PPM tool.
  • Provide oversight and tracking of all MGS project resources and vacancies; driving recruitment, onboarding and resource reporting.
  • Own portfolio financial management; driving periodic reporting, working collaboratively with project managers and the Finance service line.
  • Build an internal strategy and planning capability including supporting associate development and line management responsibilities.

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

Other jobs you might like