I started in 2020, freelancing for independent US brands on Seller Central. Most of that first year was cleanup: listings suppressed for reasons nobody had read, campaigns built by someone who had since left, stock that ran out in week three of a launch. Very little of it was strategy. It was finding out what had already gone wrong, and in what order to fix it.
At Hyperfuture I took over one catalog listed in 14 marketplaces, running up to $10K a month in ad spend. The same ASIN behaved differently in each. What sold in the US stalled in Germany, and when I pulled the search terms German buyers were actually typing, the translated title contained almost none of them. Keyword research stopped being a US-only task for me after that.
At Leads Expert Group I moved to Vendor Central, managing an established motorcycle apparel and leather goods brand in the US. First-party takes away most of the levers I was used to: no retail price, no Buy Box, no relisting your way out of a weak ASIN. What is left is content, fill rate and cost negotiation, so I spent that year getting good at purchase orders and chargeback disputes.
Since late 2024 I have been an Amazon Brand Manager at Swiftstart, where advertising, catalog, inventory, account health and compliance all report into one P&L that I own. Across the four roles: 26 accounts, nine marketplaces, and monthly PPC budgets above $10K on several of them.
What I have ended up good at is the join between those things. Deciding whether to push a product this week means holding stock cover, margin, listing quality and rank in view at once. Split that across four people and the answer arrives a week after it was useful.