E-Commerce Specialist (Marketplace Operations)

Hyh America; Irvine (CA); On-site; USD 70,000 - 80,000; Full time

Job summary

HYH America is seeking an E-Commerce Specialist to support daily operations across Amazon, Walmart, Target Plus, and Weee! platforms. You will manage product content, listings, and inventory, while collaborating with Design, Marketing, and Supply Chain to keep channels accurate and performant.

You will work on on-site duties in Irvine, CA, ensuring listings meet platform guidelines, responding to vendor inquiries, and driving listing quality and availability to optimize sales.

Qualifications

• 1–2 years of experience in e-commerce or marketplace operations.
• Experience maintaining product listings and supporting marketplace operations, order issues, or inventory coordination.
• Proficiency in Excel for data organization and analysis (PivotTables, lookups).
• Strong written English and cross-functional communication skills.
• Ability to manage multiple tasks and resolve routine operational issues.

Responsibilities

• Create and optimize product content (titles, bullets, descriptions, images) across channels.
• Conduct keyword research to improve search visibility and conversions.
• Set up new items and maintain listing data across platforms including pricing and attributes.
• Audit and fix suppressed or inaccurate listings; document standards and templates.
• Monitor inventory levels and flag out-of-stock/overstock risks.
• Collaborate with Sales, Marketing, Design, and Supply Chain to ensure consistent content.

Skills

Marketplace ops

Content optimization

Excel data analysis

Cross-functional coord.

English writing

Multi-tasking

Education

Bachelor's degree in Business/Marketing/E‑Commerce

Tools

Amazon Vendor Central

Amazon Seller Central

Walmart Seller Center

Weee!/Target Plus platform tools

Helium 10

Jungle Scout

Job description

E-Commerce Specialist (Marketplace Operations)

About HYH America

HYH America Inc. is a U.S.-based subsidiary of hy Co., Ltd., a South Korean leader in fermented dairy, functional beverages, and health-focused nutrition with over 50 years of innovation. Building on hy's legacy of pioneering wellness solutions for millions of households, HYH America represents the company's strategic expansion into the United States market.

More than a product-driven business, HYH America is a purpose-led venture committed to shaping everyday lifestyles. Our mission is to inspire Healthier Habits and Happier Cultures, bringing together thoughtfully crafted wellness products, community, and cultural experiences to create a more balanced and joyful way of living. Through health innovation, authentic collaborations, and culturally relevant engagement, HYH America is redefining how wellness is experienced across America and beyond.

JOB OVERVIEW

We are looking for a detail-oriented E-Commerce Specialist to support day-to-day operations across our online marketplace channels, including Amazon (Vendor Central and Seller Central), Walmart.com, Target Plus, and Weee!. Reporting to the E-Commerce Manager, you will help oversee all marketplace channels, supporting product content, listing quality, and inventory availability across platforms. You will also work closely with our design, marketing, and operations teams to keep our channels running smoothly and consistently.

This is a fulltime, exempt position, fully on-site based at our Irvine, CA office.

ROLES AND RESPONSIBILITIES

Product Content & Listings

• Write, edit, and publish product content (titles, bullet points, descriptions, images, and enhanced/A+ content) in line with each platform's style guides and requirements.
• Conduct keyword research to improve search visibility and conversion.
• Set up new items and maintain accurate listing data across all channels, including attributes, pricing, images, and compliance information.
• Help establish and document standards, templates, and best practices for listing creation, content distribution, and ongoing maintenance.
• Audit live listings regularly to identify and fix suppressed, inaccurate, or incomplete content.

Inventory & Order Operations

• Monitor inventory levels and online product availability and flag out-of-stock and overstock risks early.

Customer & Platform Support

• Respond to customer inquiries on seller-fulfilled channels and resolve order issues promptly.
• Open and manage support cases with marketplace partner teams to resolve listing, catalog, and account issues.

Collaboration, Category Expertise & Reporting

• Collaborate with Sales, Marketing, Design, Supply Chain, and Logistics teams to maintain accurate and consistent product content, imagery, and information across marketplace platforms.
• Coordinate with internal teams to address marketplace operational needs and resolve product-related issues.
• Serve as a subject matter expert for our product categories by tracking competitors, pricing, reviews, and category trends.

QUALIFICATIONS

Education

• Bachelor's degree in Business, Marketing, E-Commerce, or a related field preferred.

Required

• 1-2 years of experience in e-commerce, online marketplace operations, or a related role.
• Hands-on experience with at least one major marketplace platform, such as Amazon Vendor Central, Amazon Seller Central, Walmart Seller Center, Target Plus, or Weee!.
• Experience maintaining product listings and supporting marketplace operations, order issues, or inventory coordination.
• Proficiency in Microsoft Excel, including data organization and analysis (e.g., PivotTables and lookup functions).
• Ability to monitor basic marketplace performance metrics, organize data, and summarize findings clearly.
• Strong written English - for product copy, attention to detail, problem-solving, and cross-functional communication skills.
• Ability to manage multiple assignments, resolve routine operational issues, and elevate complex matters appropriately.

Preferred

• Experience in CPG, food and beverage, or grocery e-commerce.
• Familiarity with marketplace promotions, Amazon Advertising/Sponsored Products, or similar advertising tools.
• Experience with Helium 10, Jungle Scout, ERP systems, or inventory/order management software.
• Proficiency in Microsoft PowerPoint.

PHYSICAL DEMANDS & WORK ENVIRONMENT

• Must be able to remain in a stationary position and operate office equipment for a prolonged period.
• Must be able to work in a schedule that commensurate with business operation, including work during weekends, holidays and/or times outside of normal business hours.
• Must be able to travel as business needs (up to 20% travel)
  

Equal Opportunity Statement

HYH America is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

The pay range for this role is:

70,000 - 80,000 USD per year (HYH America - Irvine)