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Mars UK

Sr Manager, External Manufacturing

Salary:  $134,400 – $184,800 per annum
Location:  USA-Illinois-Chicago | United States of America
Location flexibility:  1 office day / week, 2 office days / week, 3 office days / week, 4 office days / week
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Job Description

Job Description:

About Mars Snacking Accelerator

Accelerator, a global Division of Mars Snacking, is on the front line of unlocking growth across high-potential categories and brands to fuel what’s next for Snacking. It’s home to both emerging and enduring brands, including KIND, TRÜ FRÜ, NATURE’S BAKERY, RXBAR, EGGO, POP-TARTS, and RICE KRISPIES TREATS. Combining the scale of Mars with the agility of a start-up, our Division has the ambition to accelerate the future of snacking by delivering products consumers love today, discovering category-shaping innovations for tomorrow, and developing entrepreneurial teams whose impact will last for generations.

We’re looking for passionate talent who dare to dream big, agile collaborators who talk straight and decide fast, and driven performers with a growth mindset. We’re proudly part of Mars, while also building something boldly different. If this inspires and energizes you, you’ve found the right place where you can do cool things with fun people for one of the biggest snacking companies in the world!

The Opportunity: Why This Role Matters

External manufacturing is at the very core of our business and growth ambition. As the Senior Manager of External Manufacturing, Divisional Supply, you will serve as the strategic architect and relationship lead across our external manufacturing network—supporting iconic brands in our Tasty & Wholesome portfolio (such as Pop-Tarts, Eggo, Rice Krispies Treats, and MorningStar Farms) as well as hyper-growth brands like Trü Frü.

This is an opportunity to transform our external network into a center of excellence. You will balance strategic vision with operational rigor—driving standardization and governance across business units, leading executive-level supplier partnerships, and building a network that positions Mars Accelerator as a true "partner of choice" while maintaining world-class performance and accountability.

What You’ll Do (Key Responsibilities)

  • Lead External Manufacturing Strategy: Develop, own, and govern the divisional External Manufacturing strategy, optimizing network design to support growth, resilience, service, and cost objectives.

  • Executive Supplier Relationship Management: Serve as the senior relationship owner for key co-man partners, leading business reviews, standardizing ways of working across BUs, and driving continuous improvement.

  • Network Transformation & Standardization: Identify network optimization opportunities, build business cases for change, and implement standardized operating frameworks across the division.

  • Capacity & Long-Range Planning: Partner cross-functionally with IBP and AOP planning teams to translate demand forecasts into external manufacturing capacity requirements.

  • Commercial & Contractual Alignment: Collaborate closely with Commercial/Procurement on contract renewal strategies, complex commercial negotiations, and risk mitigation.

  • Matrix Leadership: Lead and influence cross-functional stakeholders across Operations, Quality, R&D, and Finance without direct line authority.

What We’re Looking For

  • The Strategic Network Architect: Proven track record of designing, scaling, or transforming complex external manufacturing networks. We value demonstrated hands-on leadership and outcomes over specific degrees.

  • Master of Strategic Partnerships: The ability to be a true "partner of choice," cultivating deep supplier relationships while holding partners rigorously accountable to performance and SLAs.

  • Business & Financial Acumen: Strong commercial mindset with experience evaluating network economics, building robust business cases, and making data-backed decisions.

  • Cross-Functional Influence: Proven success driving alignment across matrixed organizations with diverse brand cultures and operating cadences.

Qualifications

  • Experience: 8+ years of progressive experience in Supply Chain, Manufacturing, Procurement, or Operations, with substantial experience managing external manufacturers or strategic supplier networks.

  • Industry Focus: Experience in Food Manufacturing / CPG is strongly preferred.

  • Skills: Deep understanding of capacity planning (IBP/AOP), network design, and supplier governance.

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The base pay range for this position at commencement of employment is between the range listed below, however, base pay offered may vary depending on multiple individualized factors, including but not limited to job-related knowledge, skills, and experience. The total compensation package for this position will include variable pay, medical and dental benefits, participation in 401k plan, and paid time off benefits. Details of participation in these benefit plans will be provided if an applicant receives an offer of employment.

The pay range shown is applicable to all US locations listed within the job posting:USD 134,400.00 - USD 184,800.00

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Working at Mars UK

Hybrid

Core hours 11–3

Company employees:

4,000 In the UK

Gender diversity (m:f):

57:43

Hiring in countries

Argentina

Australia

Austria

Belgium

Brazil

Canada

China

Czechia

Denmark

Egypt

Estonia

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Thailand

Türkiye

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Office Locations

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
Neonatal 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
Learning license
Studying sabbaticals
Open to part time work for some roles
Menopause support
On-site gym
On-site barista
Secure on-site parking
On-site catering
Private booths
On-site wellness room
Collaboration spaces

Awards & Accreditations

1st - Most Family Friendly Company

1st - Most Family Friendly Company

Flexa awards 2026
3rd - Best Workplace Benefits

3rd - Best Workplace Benefits

Flexa awards 2026
Most loved - Large companies

Top 5 - Most loved - Large companies

Flexa awards 2026
Best Work-Life Balance

Top 10 - Best Work-Life Balance

Flexa awards 2026
1st - Most Family Friendly Company

1st - Most Family Friendly Company

Flexa awards 2025
2nd – Pet Friendly

2nd – Pet Friendly

Flexa awards 2025
Most Flexible Company

Top 5 - Most Flexible Company

Flexa awards 2025
Most Inclusive Company

Top 5 - Most Inclusive Company

Flexa awards 2025
Best Work-Life Balance

Top 10 - Best Work-Life Balance

Flexa awards 2025
Best Career Progression

Top 10 - Best Career Progression

Flexa awards 2025
Best Workplace Culture

Best Workplace Culture

Flexa awards 2025
Best Workplace Benefits

Best Workplace Benefits

Flexa awards 2025
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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