Marketplace Operations Manager

Responsibilities:

• Proactively research and identify new marketplace supplier candidates across target categories, using competitive analysis, industry resources, and internal category gaps as inputs
• Conduct initial outreach to prospective suppliers, articulate SupplyHouse’s marketplace value proposition, and manage the early-stage relationship through qualification
• Coordinate with Category Management to prioritize and schedule new supplier conversations, ensuring alignment with category strategy before advancing candidates
• Own the end-to-end onboarding process for approved suppliers, including agreement coordination, contract administration, data requirements communication, and timeline management
• Lead technical feed setup and validation for new suppliers—mapping product data, verifying feed accuracy, and resolving data quality issues prior to go-live
• Train new suppliers on SupplyHouse’s systems, data standards, and operational requirements, ensuring they are set up for long-term success on the platform
• Serve as the primary point of contact for new suppliers through the onboarding period, troubleshooting issues and maintaining momentum to hit go-live milestones
• Document onboarding processes and maintain SOPs to ensure consistent, repeatable execution as the supplier base grows
• Develop and maintain claims, warranty, and returns processes for marketplace suppliers, ensuring clear guidelines and consistent execution across the supplier base
• Monitor post-launch supplier performance and flag issues with service levels, data quality, or accounting discrepancies for resolution
• Review weekly feeds for new item suggestions and coordinate with Category Management on additions
• Research competitor listings to identify opportunities for improvement in content, imagery, and positioning
• Conduct image audits and data cleanup including attribute and filter updates on new brand
• Own SOP creation and ongoing maintenance for marketplace operational workflows
• Test and document new marketplace features and platform capabilities within the supplier dashboards
• Execute ad hoc operational projects including data cleanup, content audits, and cross-system reconciliation
• Coordinate cross-functionally with Merchandising, Pricing, and Supply Chain teams to resolve issues and support execution
• Respond to basic marketplace customer inquiries escalated from Customer Service or order fulfillment, and review processed returns to identify trends
• Reconcile discrepancies between freight and non-freight shipping methods and partner with Product Catalog to update item dimensions as needed
• Monitor out-of-stock items and communicate gaps to the Merchandising team; support price update processes to maintain alignment between SupplyHouse and supplier pricing

Requirements:

• Bachelor's degree in Business, Marketing, Merchandising, or a related field (or equivalent professional experience)
• A minimum of 5 years of experience in marketplace operations, e-commerce merchandising, or a related field
• Strong analytical skills with the ability to interpret sales and inventory data and translate findings into action
• Proficiency in Microsoft Excel and comfort working across multiple data systems and reporting tools
• Experience managing supplier or vendor relationships in an operational capacity
• Strong organizational skills with the ability to manage multiple workstreams and shifting priorities
• Clear written and verbal communication skills with the ability to coordinate across cross-functional teams
• Proven ability to document processes and create SOPs in a structured, repeatable format

Preferred Qualifications:

• Experience with marketplace platforms (e.g., Amazon, Home Depot, Walmart, or similar) or B2B e-commerce environments
• Familiarity with product feed management, catalog systems, or MDM tools
• Experience in plumbing, HVAC, or trade supply distribution is a plus