M&M’S Ecommerce & Marketplaces Key Account Manager - M/F/X
Segment: Mars Wrigley
Type of contract: Assignment until end of November 2026
The Ecommerce & Marketplace Key Account Manager is responsible for driving the growth of the Direct-to-Business (D2B), marketplaces, pureplay and ecommerce channels across Europe, including Amazon and key B2B professional customers. This role leads the end-to-end development of the B2B and marketplace ecosystem, including commercial strategy, innovation, partnerships, and P&L ownership. The associate is accountable for expanding the personalized M&M’S offering for corporate, promotional and retail partners, while unlocking digital growth through strong ecommerce fundamentals, perfect digital store execution, and strategic account management. Key KPIs include Net Sales Value (NSV), revenue growth, profitability, new client acquisition, repeat business growth, and marketplace performance.
What are we looking for?
- 5+ years experience in Ecommerce, Digital Sales, Marketplace management or Business Development
- Experience managing Amazon, marketplaces or digital retail channels (preferred)
- Experience in B2B commercial development or key account management (preferred)
- Strong commercial and negotiation capabilities
- Ecommerce and digital marketplace expertise
- P&L management and financial acumen
- Strategic thinking and innovation mindset
- Strong stakeholder management and relationship building
- Ability to operate in fast-paced entrepreneurial environments
What will be your key responsibilities?
- Drive Growth of B2B, Marketplaces and Pureplay Ecommerce
- Lead the commercial development of the D2B, Amazon pureplay and B2B ecommerce businesses across Europe.
- Own the end-to-end P&L of the marketplaces and B2B businesses, ensuring sustainable growth and profitability.
- Identify and unlock new digital growth opportunities across marketplaces, pureplay retailers and professional customers.
- Track and optimize Perfect Digital Store fundamentals across ecommerce platforms (content, visibility, conversion, ratings, availability).
- Develop Strategic Marketplace & Key Account Partnerships
- Build and maintain long-term relationships with key digital customers and strategic partners.
- Manage negotiations, commercial terms, and joint business planning with marketplaces and B2B partners.
- Develop and grow partnerships with top retailers and experiential brands through personalized M&M’S offerings (e.g., Disneyland Paris collaborations).
- Identify and onboard new strategic accounts to expand the M&M’S ecosystem.
- Expand the Professional B2B Business
- Drive multi-channel expansion with professional customers across Europe.
- Develop and manage the corporate and promotional product range, including:
- Personalized M&M’S products
- Custom corporate gifts and branded goodies
- End-of-year gifting programs
- Bespoke corporate offerings
- Manage the B2B e-commerce experience via MMS.com/business, enabling autonomous purchasing and tailored corporate solutions.
- Manage the B2