Mars UK • Slough, Berkshire, United Kingdom

Senior Strategic Sourcing Manager - Contingent Workforce

1–2 days/week at home

Core hours 11–3

Dog friendly

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Job Description

Job Description:

Salary: £87,000 - £109,000 + Car Allowance + Bonus + Benefits

The Sr Strategic Sourcing Manager Contingent Workforce is responsible for the development & execution of Category Management strategies, consulting for all Mars Segments globally, and reports to the Sr. Director Commercial – General Services. This role will develop an enterprise wide strategy of a 3 year roadmap covering a spend of about $300M with a documented execution plan aligned to the business strategies & key stakeholders and regional Procurement teams.

As a Senior Strategic Sourcing Manager at Mars, you will partner to drive implementation of sub-category buying strategies and co-pilot optimization of resources. This role manages global initiatives by leveraging supplier relationships, while also driving standardization and automation. Ownership of sub-category spend on a global basis will be key, as will heavy x-functional collaboration and close partnership with key stakeholders.

This position will be responsible for optimizing investments in terms of cost, quality, risk per the Mars commercial manual and its processes as well as following MGS Commercial governance. This person will be responsible for ensuring supplier performance and acts as the first point of contact for suppliers and internal stakeholders.

What are we looking for?

  • Proven commercial or purchasing experience, ideally in Contingent Workforce at Global level, including implementation of MSP/VMS and Services Procurement (SOW)

  • A passion for driving value for our business by leveraging various sourcing channels

What will be your key responsibilities?

  • BEST PRACTICE Develop Category insights, benchmark and import best practices and ensure knowledge management within the Regional Sourcing Teams across regions

  • STRATEGY Develops deep understanding of our business needs, external benchmarks and category industry and people capabilities, to create and execute Category sourcing strategies with an End-to-End approach, focusing on a time horizon of 3-5y, driving innovation and challenge to bring competitive advantage to the business

  • PARTERING Partner with the key Global & Regional stakeholders including to ensure alignment with the business requirements as well as strategy and execution plan

  • FINANCIAL CONTRIBUTION Contributes with value creation across the Consulting spend, including P&L cost reduction, Cash from Payment Terms

  • PROJECT AND CHANGE MANAGEMENT Ensures robust project and change management processes, right governance and escalation procedures

  • TEAM Active member of the Global General Services team and establishes and maintains working relationship with the Regional Category Operations Buying Managers and Category Sourcing Managers

  • NEGOTIATION & CONTRACTING Lead the Global and critical supplier financial and contractual negotiation, but also relationship & Performance management. Works with the regions to ensure successful Implementation of regional contracts and related Service Level Agreements for the respective

  • SUPPLIER PERFORMANCE RELATIONSHIP MANAGEMENT (SPRM) Develops and maintains sustainable relationships with Critical suppliers. Tracks, monitors and drives key supplier performance indicators across cost, service and quality and puts corrective actions in place for continuous improvement

  • CORPORATE RESPONSIBILITY Implements and complies with standard processes and tools to ensure responsible, continuous and sustainable sourcing in line with commercial policies, systems and controls

  • TOOLS Applies a wide range of sourcing tools (e.g. negotiation, e-procurement, strategic collaboration, etc.) to define the best trading strategic approach for use when allocating business to suppliers, appropriate to the strategic choice​

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.

Find out more about what Mars can offer you by visiting our Global Careers site.


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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