1–2 days/week at home

Core hours 11–3

Dog friendly

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Job Description

Job Description:

As a Transition Manager will manage transitions which will improve, standardise, and ultimately relocate Finance Services activities from Divisions / Segments to MGSF and ensure alignment to the Mars Operating Model. This will include taking total accountability for planning, structuring, leading and executing transition projects and programmes.

What are we looking for?

  • Degree level education, preferably with post graduate qualification; domain qualification eg accounting, HR etc - knowledge in order to apply relevant principles to transition related activities

  • Minimum 5+ years’ experience in shared services

  • PMP (Project Management Professional) Certification or equivalent preferred, but not essential

  • Understanding and preferably experience of due diligence activities

  • Awareness of enabling technologies to drive process improvement and ability to make a compelling case for change based on these technologies

  • Experience in preparing proposals for solutions and presenting to customers

  • Experience in preparing and presenting business cases

  • Experience in leading transition projects and handling the related sensitivities

  • Good understanding of shared services and service management processes (performance management, service level management, customer surveys, continuous improvement, etc.)

  • Strong organisational, presentation, and customer service skills

  • Ability to effectively prioritise and execute tasks in a high-pressure environment;

  • Excellent communication, analytical and problem-solving abilities with a focus on detail

  • Advanced relationship management skills involving multiple stakeholder groupings and proven ability to prioritize and manage the needs of multiple senior stakeholders.

  • Track record of delivering transition projects on time and to budget

  • Clear and impactful communicator, networker and influencer, with the ability to build and maintain good stakeholder partnerships both within and outside the organization.

  • A collaborator who operates well as part of a global team to achieve the shared business outcomes that our customers require

  • Energetic, inspires others to high performance, self-motivated with the drive to operate effectively in ambiguity.

What will be your key responsibilities?

Key tasks – Solutions and Due Diligence

  • Operate the Front Door process to review potential candidates for transition into MGFS

  • Perform due diligence to confirm the feasibility of the intended transition

  • Identify opportunities for improvement in the work being taken on, eg through process re-engineering, introduction of enabling technology, economies of scale through consolidation

  • Prepare business case for proposals made for work to be brought into MGFS

  • Prepare due diligence document for manager review and sign off

  • Support the dialogue with stakeholders to present solution and due diligence document and explain the proposal

Key Tasks - Transition

  • Run transitions from design and development stage to implementation and completion stage

  • Document management, including managing systems and tools during transition project delivery to ensure proper document management

  • Create strategies for project risk mitigation and contingency planning

  • Define requirements for transition risk and allocate appropriate resources

  • Communicate with all stakeholders

  • Identify and manage the dependencies and the interfaces between transition projects and other projects

  • Manage and report progress and risks to the transition’s successful outcome

  • Apply a structured change management approach and methodology for business risks

  • Conduct transition readiness assessments, evaluate results and present findings in a logical and easy-to-understand manner

  • Develop a set of actionable and targeted change management plans – including sponsor roadmap, training plan and resistance management plan

  • Work with teams to integrate change management activities into the overall transition plan

  • Work with communication, training, P&O and OD specialists in the formulation of plans and activities to support the transition

  • Be customer and transition focused/orientated

People / Leadership:

  • Demonstrate behaviour in line with the Mars values, standards and a professional workplace;

  • Provide leadership through example to develop the performance of the wider team in line with the Group’s policies and systems (e.g. performance management) in order to achieve business goals.


  • Contribute to the development of the transition team budget

  • Monitor costs against budget and either address, or advise your manager of, any variances of note;

  • Identify any opportunities for improved cost management and either address these, or raise them with your manager, as appropriate.

Work Processes:

  • Fully understand all MGSF policies, processes and systems which apply to your work and work within these

  • Identify any issues around these that interfere your ability to complete work or meet the plan/strategy. For processes within your authority, make the required changes. For others, escalate these issues to seek action and / or look for alternative solutions

Role Relationships:

  • Key Internal Relationships – MGSF Leadership Team, Service Management Team, Service Operational Delivery Leads/Management Teams/Service Line Managers, MGSF transition and project leads

  • Key External Relationships – Division and Segment representatives, including CFOs and Controllers; key working relationship with strategic partner service provider Genpact

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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