Junior eCommerce and Marketplace Specialist

Portwest is a global leader in the design and manufacture of high-quality workwear and PPE, with over 120 years of heritage since its founding in Westport, Ireland in 1904. As a family-owned business now into its fourth generation, Portwest has grown into a truly international company, operating across more than 130 countries with manufacturing facilities and offices worldwide.

Our eCommerce & Marketplaces team plays a central role in this transformation. This role will work closely with experienced eCommerce and Marketplace Managers, supporting trading, operational and performance activity across large, complex marketplaces in an international environment.

JOB SUMMARY

We are seeking a Junior eCommerce and Marketplace Specialist to support the growth and optimisation of our global marketplace portfolio, including Amazon Vendor Central, Amazon Seller Central, Amazon Advertising, eBay, Walmart, DIY.com and other international platforms.

Reporting to the Head of eCommerce & Marketplaces and working day-to-day with experienced Marketplace Managers, you will support marketplace trading plans, promotions, reporting, and operational execution across multiple regions

This is a hybrid role: 1-2 days per week from Portwest's Manchester office (Salford Quays). The remaining days are remote.

Occasional travel to our warehouse in Thurnscoe is required. Access to a car is essential for inter-office travel.

KEY RESPONSIBILITIES

• Support day-to-day marketplace operations across Amazon Vendor Central and Amazon Seller Central and other platforms
• Assist with onboarding, maintaining and optimising a large multi-SKU catalogue across Amazon and other marketplaces, ensuring listings are accurate, compliant and live
• Support marketplace advertising activity (Amazon Advertising including Sponsored Products and Sponsored Brands) through reporting, keyword analysis, budget updates and campaign checks
• Use AI tools such as ChatGPT, Google Gemini and internal AI Agents to support reporting, analysis and repetitive operational tasks
• Monitor stock availability, suppressed or inactive listings, delivery performance, chargebacks and operational KPIs
• Support the sharing of marketplace insights such as operational issues, performance trends and competitor activity
• Assist with basic paid search optimisation tasks under guidance, including search term analysis and bid adjustments
• Stay informed on marketplace trends, tools and best practices relevant to trading and operations
• Carry out routine checks on pricing, promotions and availability, escalating issues where required

AI & Automation Enablement

• Follow best-practice guidelines for responsible and accurate use of AI tools
• Identify manual or repetitive tasks and suggest opportunities for automation and efficiency improvements
• Support A/B testing activity and simple experiments, capturing results and insights

Cross-Functional Collaboration

• Assist Marketplace Managers with preparation of materials for internal reviews and meetings
• Build ownership of defined tasks, SKUs, categories or mini-projects over time
• Take part in structured onboarding and training across Portwest systems, marketplaces and AI tools

Performance, Data & Reporting

• Run regular marketplace reports covering sales, traffic, conversion, inventory health and returns
• Support weekly and monthly performance reporting for internal stakeholders
• Track core KPIs such as sales, margin, Buy Box, stock availability, promotional performance and advertising metrics such as ACOS
• Maintain documentation of processes, reports and learnings
• Help identify trends, risks and opportunities within marketplace data

Marketplace Operations & Trading Support

• Support execution of trading plans, promotions, deals and seasonal activity as briefed by Marketplace Managers

Progression

This role is designed as a development pathway into a more senior eCommerce or Marketplace Manager position, with increasing responsibility for platforms, categories or projects as experience grows.

REQUIREMENTS

• 2–3 years of experience in eCommerce, digital marketplaces, online trading or a related operational/commercial role
• Experience with Amazon Vendor Central and/or Amazon Seller Central in a trading or operational capacity
• Exposure to marketplace advertising platforms (e.g. Amazon Advertising / Amazon PPC)
• Familiarity with inventory, order or product data systems (e.g. Linnworks, Akeneo, Bynder)
• Strong organisational skills and attention to detail, particularly when managing large product catalogues
• Comfortable working with data in Excel or Google Sheets and interpreting performance reports
• Experience working with multi-region or international marketplaces
• Clear written and verbal communication skills
• Experience using AI tools to support analysis, reporting or operational workflows

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COMPANY AWARDS

• Great Place To Work 2024
• Private Irish Business of the year – Export Industry Awards 2025
• Silver Ecovadis Sustainability Rating 2025

Applicants must have a right to live and work in the relevant jurisdiction.

Portwest is an equal opportunity employer. All applicants will be considered for employment without attention to age, gender, race, religion, sexual orientation, civil status, veteran status, family status, disability status or membership of a minority group.