Marketplace Manager

Luminize•San Diego, CA

12d•$90,000 - $110,000•Onsite

About The Position

At Luminize, we help brands win, and as one of the top 5 Amazon sellers in the US, we’re looking for top performers to grow with us. We're looking for a sharp, driven marketplace operator who thrives in a fast-paced, high-growth environment. As our Marketplace Manager, you'll own end-to-end execution across Amazon International and off-Amazon channels — connecting strategy to results across a cross-functional team. You'll be the central hub for your platforms, driving revenue, account health, and expansion for some of the most exciting brands in the Amazon ecosystem.

Requirements

Bachelor's degree in Marketing, Business, or a related field, or equivalent work experience
3+ years of e-commerce management with demonstrated success scaling sales on Amazon and alternative marketplaces (Walmart, TikTok Shop, Amazon Canada, etc.)
Strong understanding of retail media and digital advertising principles (Amazon PPC, Walmart Connect)
Excellent project management skills: able to prioritize, delegate, and execute independently without continual oversight
Data-driven mindset with strong analytical skills (Google Sheets, Excel, Seller Central reports, BI tools) to track KPI trends and identify whitespace opportunities
Cross-functional collaborator who works seamlessly with PPC, Content, and Operations teams
Clear, direct communicator with fluency in English
Comfortable wearing multiple hats in a fast-paced, small-team environment

Nice To Haves

Deep expertise in Seller Central; Vendor Central experience
Experience managing multi-brand portfolios in an agency environment
Familiarity with Walmart Marketplace, Target Plus, or other third-party channels
Exposure to Amazon DSP or Sponsored Ads campaign management
Experience with project management tools such as Asana, Monday.com, or equivalent
Comfort working in AI-assisted workflows and a willingness to adopt emerging automation tools

Responsibilities

Define and execute e-commerce growth strategies aligned with company goals.
Lead international Amazon marketplace launches (UK, EU, CA, and more) and expand presence across off-Amazon platforms including TikTok Shop, Walmart, Coupang, and Target.
Launch, manage, and optimize product listings across Amazon International and alternative marketplaces — including content, SEO, A+ content, and storefronts.
Partner with PPC Strategists to plan and optimize campaigns. Translate business goals into clear ad strategies and creative requirements, track ad ROI, and guide spend allocation with data-driven recommendations.
Coordinate projects across Brand Management, Advertising, Supply Chain, Compliance, Catalog, and Content teams. Identify bottlenecks and implement process improvements across the e-commerce workflow.
Monitor KPIs, sales trends, and campaign performance to inform decision-making. Conduct competitor analysis and identify market expansion opportunities.
Support inventory forecasting, replenishment, and logistics coordination. Ensure compliance with marketplace policies and resolve operational issues quickly.

Benefits

Multiple medical plan options through Anthem Blue Cross
Dental & vision insurance (including orthodontia and annual exams)
Pet benefit program with savings on vet care, products, and services
Paid vacation (accruing up to 120+ hours/year with rollover and cap)
Paid holidays annually
Coverage for spouses/domestic partners and dependents under 26
Benefits begin on the first of the month after your hire date
Mentorship from experienced managers during 1:1s and annual performance reviews
Cross-functional exposure to departments including content, brand management, software, supply chain, operations, and catalog
Learning resources, including Udemy course access, and additional training programs and courses