Seller Trading Manager in Manchester

OnBuy are an online marketplace who are on a mission of being the best choice for every customer, everywhere. We have recently been named one of the UK’s fastest‑growing tech companies in Deloitte’s Technology Fast 50 for the third year in a row, and as the 'Fastest‑Growing Tech Business in the South West'.

Working at OnBuy: We are a team of driven and motivated people who thrive when working at pace. To succeed at OnBuy you need to take charge, fully own your responsibilities, and roll your sleeves up when needed to get it done. You will thrive in an ever‑changing environment, staying focused, prioritising ruthlessly, and driving meaningful change with your voice heard.

About the Role: The Seller Trading Manager owns the quality, competitiveness and visibility of our marketplace catalogue across the UK and international markets. The primary responsibility is to ensure seller data is accurate, enriched and fit for purpose, and to turn that high‑quality data into clear, actionable trading insights. This role does not directly execute seller‑facing actions; instead it generates a structured pipeline of opportunities (content fixes, pricing gaps, availability issues, GTIN/GS1 integrity, search visibility improvements) that are passed to Seller Success and Sales.

What you’ll own:

• Catalogue Quality Leadership: End‑to‑end governance of seller data quality across regions; enforce accept/optimise/suppress/return rules and uphold gold standards for images, titles, attributes, GTINs/GS1, encoding and de‑duplication.
• Taxonomy & Mapping: Define and maintain taxonomy, category hierarchy, product mapping and catalogue segmentation; ensure international readiness (language, symbols, encoding).
• Trading Insights: Analyse visibility, search rank, competitiveness, conversion, GMC health and availability; generate structured opportunity packets for Seller Success & Sales; prioritise via Trading Score, Lead Score and propensity signals.
• Search & Discoverability: Remove ghost products, fix mis‑categorisation, improve search/browse relevance, set surfacing/suppression/boosting rules based on competitiveness and data quality; partner with Buyer Experience & Tech on ranking logic and filters.
• Pricing Accuracy & Competitiveness: Maintain accurate regional pricing, detect market misalignment, segment inventory (KVI, premium, long‑tail, substitution‑sensitive), surface pricing‑led trading actions for commercial teams.
• Feature Brand Management (UK/EU): Ensure top brands meet content, GTINs, compliance standards; lift visibility and conversion using data signals; collaborate with Marketing on discovery, merchandising and campaigns.
• GMC Readiness: Guarantee catalogue compliance with Google Merchant Center requirements; reduce disapprovals, grow impression share and mine GMC data for further optimisation.

Requirements:

• Marketplace or e‑Commerce trading, category management or product data operations experience.
• Deep understanding of product data structures, taxonomy, attributes, GTINs and GS1 standards.
• Hands‑on experience with search systems (e.g., Solr), GMC, feed management and competitive pricing.
• Analytical capability with the ability to translate signals into actionable insights.
• Strong communication and storytelling skills to influence cross‑functional teams.
• High attention to detail with strong commercial judgement.
• Experience driving outcomes through others (not direct line execution).

Benefits:

• Salary up to £70,000 depending on experience.
• Company equity.
• 25 days annual leave + Bank Holidays.
• 1 extra day off for your birthday.
• Employee Assistance Programme.
• Perks at Work benefit platform.
• Opportunities for career development and progression.

Remote or Hybrid – Manchester or Bournemouth. OnBuy is an equal opportunities employer. We are dedicated to creating a fair and transparent workforce, starting with a recruitment process that does not discriminate on the basis of gender, sexual orientation, marital or civil partnership status, pregnancy or maternity, gender reassignment, race, colour, nationality, ethnic or national origin, religion or belief, disability, or age.