Role: Amazon Flat File / Master File Specialist

Location:
Remote Schedule: East Coast Time Zone (9-5 Full-Time) Salary Range: $8–$12 per hour (based on experience) We are seeking a detail-oriented Amazon Flat File / Master File Specialist to support catalog management and listing integrity across a 3,000+ ASIN portfolio. This role is focused on flat file creation, parent-child variation management, and Seller Central casework. The adecuado candidate is execution-focused, highly detail-oriented, and comfortable working in a fast-moving Amazon environment where listings require constant monitoring and correction. Accuracy, speed, and strong technical understanding of Amazon’s catalog structure are critical for success in this role. ResponsibilitiesFlat File Creation & Management:
• Full flat file creation from scratch
• Master file maintenance and updates
• Variation theme configuration (size, color, style)
• Bulk uploads via Seller Central Parent-Child Variation Management:
• Build and maintain parent-child relationships
• Troubleshoot orphaned child ASINs
• Resolve broken variation families
• Maintain clean SKU hierarchy Seller Central Casework:
• Create and manage Seller Support cases
• Resolve listing suppressions and stranded issues
• Troubleshoot upload errors and feed processing reports
• Escalate catalog conflicts when necessary Catalog Monitoring & Maintenance:
• Monitor listing health across 3,000+ ASINs
• Identify and correct structural catalog issues
• Support parent ASIN tracking initiatives
• Maintain accurate backend listing data Must-Haves (Non-Negotiable)
• Hands-on experience with Amazon Seller Central (minimum 2 years)




• Strong experience creating and troubleshooting flat files
• Experience managing parent-child variation structures
• Experience handling Amazon casework
• Ability to read and resolve flat file upload errors
• Ability to work East Coast hours
• Strong English communication skills (written and verbal)
• Ability to work independently with minimal supervision Nice-to-Haves
• Experience with Amazon Brand Registry
• Experience managing high-variation apparel or footwear catalogs
• Experience supporting 3,000+ ASIN portfolios
• Familiarity with inventory forecasting or parent ASIN tracking systems
• Experience using Asana or similar task management tools
• Prior experience working with US-based Amazon sellers
• Leadership or training experience Ideal Candidate Profile
• Highly detail-oriented and technically precise
• Comfortable troubleshooting Amazon catalog issues daily
• Execution-focused with minimal supervision required
• Proactive in identifying listing structure problems
• Organized and process-driven
• Comfortable working in a high-volume Amazon environment
• Remote Work: Work from anywhere—our team is global, and we value work-life balance.
• Growth Opportunities: As a key player you’ll have the chance to shape your role and grow with us.
• Innovative Culture: Join a team that is passionate about leveraging data to solve challenges and drive success in a rapidly evolving market. As part of our recruitment process, all candidates are kindly asked to read, understand, and agree to Lago’s Confidentiality and Non-Circumvention Agreement. This ensures a respectful and professional experience for everyone involved.

📌 Amazon Flat File (Argentina)
🏢 Lago
📍 Argentina