Amazon Flat File / Master File Specialist

Lago; United States; Remote; USD 11,000 - 17,000; Full time

Job summary

Lago is seeking a meticulous Amazon Flat File Specialist to support catalog management for a 3,000+ ASIN portfolio. This remote role follows East Coast time hours, focusing on flat file creation, parent-child variation management, and Seller Central casework.

Accurate, fast execution and strong understanding of Amazon catalog structure are essential. The ideal candidate will be hands-on with flat files, capable of troubleshooting issues, and able to maintain clean backend listing data while

Qualifications

• Hands-on experience with Amazon Seller Central (min 2 years).
• Strong experience creating and troubleshooting flat files.
• Experience managing parent-child variation structures.
• Experience handling Amazon casework and resolving upload errors.
• Ability to work East Coast hours and read/write English well.

Responsibilities

• Flat file creation from scratch and bulk uploads via Seller Central.
• Master file maintenance and updates; variation theme configuration (size, color, style).
• Manage and troubleshoot parent-child relationships; fix orphaned child ASINs; maintain SKU hierarchy.
• Create and manage Seller Central casework; resolve listing suppressions and feed issues.
• Monitor and maintain listing health across 3,000+ ASINs; correct catalog structure and data.

Skills

Amazon Seller Central

Flat file creation & troubleshooting

Parent-child variation management

Amazon casework experience

Read and resolve flat file upload

East Coast hours availability

English communication

Independent work style

Tools

Asana

Job description

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 ideal 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.

Responsibilities

Flat 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
  • Maintain accurate backend listing data
  • 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.