Sebastian J.

Amazon and eBay growth is rarely limited by a single issue. Over the past 14 years, I have built, managed, and scaled marketplace businesses as both a seller and consultant, including operating a highly successful Amazon store and one of the UK’s highest-performing eBay stores in its category. Today, I help brands improve profitability through PPC optimisation, listing conversion improvements, account management, and marketplace strategy. I currently support a portfolio of marketplace brands ranging from startups to established consumer brands. Some clients have worked with us for more than seven years, which reflects the long-term value and trust we aim to build. Who I work with • Established Amazon brands • eBay businesses seeking growth • Manufacturers entering Amazon • Private label sellers • Brands struggling with PPC profitability • Businesses requiring ongoing account management Areas I can help with Amazon PPC campaign setup and management ACOS reduction and wasted ad spend analysis Amazon listing SEO and keyword optimisation Listing audits and conversion rate improvements A+ Content / Enhanced Brand Content planning Amazon FBA and FBM strategy Seller Central and Vendor Central support eBay listing optimisation and store growth Marketplace operations and inventory workflows using tools such as Linnworks Amazon account health, listing issues and reinstatement support Experience and proof 14+ years selling and managing ecommerce marketplace businesses Built and exited my own ecommerce business in 2017 Over 350,000 eBay feedback ratings from hands-on selling experience Currently supporting around 67 marketplace clients Clients ranging from startups to larger brands advertising on UK TV Some clients retained for more than seven years Amazon PPC ACOS reduced to below 15% on selected targeted campaigns Listing conversion rates improved by up to 35% through SEO, content and creative improvements eBay store ranked #1 in the bicycle category by turnover in 2015, 2016 and 2017 Experience across Amazon UK, USA, Europe, Japan and Mexico My work is focused on commercial outcomes, not vanity metrics. Ranking, traffic and clicks only matter if they lead to profitable sales. If you need someone who can look at your Amazon or eBay account with a seller’s mindset and tell you what actually needs fixing, send me your ASIN, store link or listing and I’ll review where performance can be improved. I am Top Rated on Upwork with a 100% Job Success Score, and I bring the same level of commitment and quality to every project, large or small. Let's work together to elevate your e-commerce performance. Send me a message and let's get started! Amazon Expert, Amazon PPC, Amazon FBA, Amazon FBM, Amazon Seller Central, Amazon Listing Optimization, Amazon SEO, Amazon PPC Expert, Amazon PPC Manager, Amazon PPC Advertising, Amazon ACOS Reduction, Amazon Keyword Research, Amazon Backend Keywords, Amazon Flat Files, Amazon Bulk Upload, Amazon Listing Variations, Amazon Product Launch, Amazon Sales Boost, Amazon Competitor Analysis, Amazon Account Health, Amazon Reimbursement, Amazon Case Handling, Amazon Enhanced Brand Content, Amazon A+ Content, Amazon Storefront, Amazon FBA Expert, Amazon FBA Management, Amazon Inventory Management, Amazon Order Processing, Amazon Customer Service, Amazon Browse Node, Amazon Vendor Central, Amazon Brand Registry, Amazon DSP, Amazon Sponsored Ads, Amazon Sponsored Products, Amazon Sponsored Brands, Amazon Reports, Amazon Private Label, eBay Listing, eBay Store Management, Ecommerce Expert, PPC Campaign Management, Product Listing Optimization