Marketplace Manager - THG Nutrition, Myprotein

Life at THG Nutrition

THG Nutrition is home to some of the world’s most trusted and best-loved wellbeing and nutrition brands, including Myprotein, the world’s largest online sports nutrition brand, alongside Myvegan, Myvitamins and MP Activewear.

Our brands and people exist to break boundaries — to power and empower those who want more. We move fast, challenge convention, and back ourselves to win. These values shape how we work every day.

• Marketplace Strategy & Growth: Develop and execute marketplace strategies to accelerate revenue growth, market share and profitability across Amazon, Walmart.com and other platforms.
• Commercial Performance: Take ownership of marketplace trading performance, identifying opportunities to improve sales, margins and profitability through pricing, promotions and advertising optimisation.
• Account Management: Lead day-to-day relationships with external marketplace agency partners, ensuring clear objectives, strong communication and accountability for performance.
• Operational Excellence: Oversee inventory planning, stock availability and fulfilment operations, maintaining optimal stock cover while minimising storage costs and operational inefficiencies.
• Performance & Reporting: Own marketplace reporting and KPI analysis, translating data and market insights into actionable commercial strategies.
• Catalogue Management: Ensure product listings, content and catalogue information are accurate, competitive and fully optimised to maximise visibility and conversion.
• Marketing & Advertising: Drive marketplace marketing activity, including advertising investment, promotional campaigns, content optimisation and creative refreshes.
• Cross-Functional Leadership: Work closely with sales, marketing, finance, supply chain and other internal teams to ensure seamless marketplace execution.
• Commercial Opportunities: Identify and implement opportunities to improve performance through upselling, promotional strategies, pricing optimisation and operational efficiencies.
• Continuous Improvement: Monitor competitor activity, marketplace trends and platform developments to identify new opportunities and maintain a competitive advantage.

• A minimum of 2–3 years' experience managing or developing marketplace accounts, with strong hands-on experience across Amazon Seller Central and/or Vendor Central.
• Experience managing marketplace performance across platforms such as Walmart.com is highly desirable.
• A proven track record of driving commercial growth, improving profitability and delivering against sales targets.
• Strong analytical capabilities, with advanced Excel skills and the ability to turn complex data into clear commercial recommendations.
• Experience managing external agencies, third-party partners or cross-functional stakeholders.
• A strong understanding of marketplace operations, including inventory management, fulfilment, catalogue optimisation, advertising and promotional activity.
• Commercially minded, proactive and solutions-focused, with the confidence to challenge existing processes and identify opportunities for improvement.
• Excellent communication, organisation and stakeholder management skills.
• The ability to thrive in a fast-paced, high-growth environment, balancing strategic priorities with day-to-day operational demands.

What’s in it for me?

Career Development

• Access bespoke development programmes that have been designed and developed by our in-house L&D team.

• Continued development through our upskilling programme that is delivered in partnership with an industry-leading training provider.

Enhanced Leave

• 25 days annual leave plus bank holidays.

• Don’t want to work on your birthday? We don’t either! Enjoy your day off on us!

• Enhanced maternity and paternity pay, depending on length of service. 

• Up to 10 days compassionate leave.

• Buy back up to 3 days each year.

• Unlock 2 days volunteer leave after 12-months.

Wellbeing Support

• Access face-to-face and virtual appointments with our in-house GP.
  
• Access our 247 Employee Assistance Programme (EAP) which is provided by Bupa. 

• State-of-the-art on-site gym.

• Access to our on-site physio.

Other Perks

• Save up to 12% on the cost of personal tech through our salary sacrifice scheme.

• Subsidised bus pass from Manchester City Centre to our ICON office. 

• Up to 50% staff discount on THG brands.
• On-site staff shop.
  
• Know someone who would be perfect for THG? Refer them and get up to £1000 when they pass their probation.

• Anniversary gifts when you hit 5 and 10 years of service.