Mariana R.
E-commerce and marketplace Manager
Notable Highlight
Managed Amazon Seller Central and FBA operations for two supplement brands, overseeing approximately 250 SKUs and generating around RK in monthly revenue. Optimized marketplace performance through pricing strategies, Buy Box management, promotions, Amazon Ads, and inventory planning.
Experience Summary
Mariana Martins Dias da M. is an E-commerce and Marketplace Manager with over three years of experience managing Amazon Seller Central and FBA operations within brand-owned environments. She oversaw end-to-end marketplace operations across Amazon, Shopify, Shopee, and Mercado Livre, managing approximately 250 SKUs and generating around R in monthly revenue. Her experience included inventory planning, pricing and Buy Box optimization, Amazon Ads, performance analysis, policy compliance, and resolving complex marketplace issues with Amazon Brazil and US support teams. She also worked as a Fre. UGC creator and previously as a copywriter in an AA, bringing expertise in ecommerce operations, marketplace strategy, and digital marketing.
Key Achievements
Managed end-to-end Amazon Seller Central and FBA operations for two supplement brands, overseeing a portfolio of approximately 250 SKUs that generated around R in monthly revenue. Resolved complex Amazon policy violations, compliance issues, recalls, and escalations by working directly with Amazon Brazil and US support teams. Improved marketplace performance through pricing, promotional, and Buy Box optimization strategies while monitoring ACOS, ROAS, conversion rates, and inventory health. Led cross-functional operational processes, ensured reseller brand compliance, and created conversion-focused product videos to enhance Amazon listing performance.
Skills
Analyse key performance, management end-to-end Amazon Seller Central, Email Marketing.
Work Experience
E-commerce Manager / Marketplace Manager
PL · Brazil · May 2023 – Present
- Manage end-to-end Amazon Seller Central operations, including FBA, inventory planning, and inbound logistics.
- Oversee marketplace operations across Amazon, Mercado Livre, Shopee, and Shopify for two supplement brands.
- Manage a portfolio of approximately 250 SKUs, generating around RK in monthly revenue.
- Develop and execute pricing, promotional, and Buy Box strategies to balance growth and profitability.
- Handle critical Amazon cases, including policy violations, compliance issues, recalls, and escalations with Brazil and US support teams.
- Monitor and analyze key performance metrics such as ACOS, ROAS, conversion rate, margins, sell-through, and inventory health.
- Collaborate with internal teams and external stakeholders to improve operations and scale performance.
- Lead and manage internal team processes, including onboarding, task prioritization, and performance tracking.
- Ensure brand compliance across resellers, maintaining pricing consistency and content standards.
- Create and edit product videos for Amazon listings and digital channels to improve conversion.
UGC Creator / Content Producer
Fre.
- Produce conversion-focused video content for supplement, cosmetics, and vegan brands.
- Create product presentations, storytelling, and short-form video content.
Copywriter
AA
- Develop advertising copy and digital campaigns focused on brand positioning and performance.