M&M’S Ecommerce & Marketplaces Key Account Manager - M/F/X

Job Description

Job Description:

Location: Haguenau

Segment: Mars Wrigley

Type of contract: Assignement 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?

1. 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).

2. 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.

3. 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.

4. Manage the B2B Sales Ecosystem

• Manage the B2B Consumer Care call center, including:

• Setting revenue and performance targets

• Supervising KPIs and service performance

• Leading the work of dedicated multilingual B2B sales agents

• Oversee the distributor and reseller network, including:

• Contract negotiation

• Commercial partnerships

• Distribution and co-packing agreements

• Drop-shipping partnerships

5. Lead Innovation & Business Expansion

• Lead and support innovation initiatives that unlock new growth opportunities across B2B and marketplace channels.

• Develop new product formats and personalized solutions for professional customers.

• Identify emerging trends in corporate gifting, promotional merchandise and digital commerce.

• Partner with Marketing, Supply Chain and Finance teams to bring new concepts to market.

6. Business Development & Industry Presence

• Generate new business through lead generation, prospecting and relationship building.

• Organize and attend key B2B industry trade shows and commercial events to drive awareness and client acquisition.

• Build and maintain a robust pipeline of potential customers and partners.

• Leverage CRM tools to track opportunities and customer engagement.

What can you expect from Mars?

• At Mars, we believe in a relationship of mutual trust, dignity and respect between our company and Associates that is more meaningful than the standard employer/employee relationship.

• As Associates, we can expect to be respected, supported and valued as individuals, to be treated fairly and equitably.

• You will join the most iconic segment of Mars and the world's largest chocolate manufacturer, which includes M&Ms, Snickers, Twix, Maltesers, Freedent, Airwaves and Be-Kind cereal bars

• You will join the 1750 Mars Wrigley Associates spread over the 3 sites in Alsace

• In Haguenau, you will work on the site of the largest M&M's factory in Europe and the second largest in the world