About Ekaterina Rubtcova
Personal blog · Ekaterina Rubtcova
I'm Ekaterina — an Amazon seller who writes about what actually works.
Selling on Amazon since 2018. Founder of the Daniks cookware brand. Founder of Daniks.AI, the AI-native PPC automation I built for my own listings.
The short version
Before Amazon, I spent years inside some of the world's largest IT companies. In 2018, I launched my first private-label product on Amazon and never looked back. That product became the Daniks Stainless Steel Induction Cookware Set under my Daniks brand — Top-1 in Germany, now Top-20 in the USA. You can look it up; it's a public listing.
Running that brand at scale, I got tired of PPC tools that pretended AI meant "rules plus a dashboard." So I built my own — Daniks.AI, founded the same year, 2018. An AI-native Amazon PPC automation that manages bids against a target ACoS with an actual agent, not a rules engine. I built it for my listings first. It worked. Hundreds of Amazon brands run on it now.
I work in three languages — English, Russian, and German. It is how Daniks reached Top-1 in Germany before we scaled into the US, and it is why I can tell you what a launch actually looks like across two marketplaces instead of just one.
This blog — and the @AmazonFBAGirl YouTube channel — is where I share the operator-level reasoning behind what I actually do. No courses. No coaching. Nothing to upsell.
Why you can trust what you read here
- Real seller with a public Top-ranked product. My flagship is Daniks Stainless Steel Induction Cookware Set — reached Top-1 in Germany, currently Top-20 in the USA. You can verify the listing, the reviews, and the ranking yourself.
- Real name, real LinkedIn. I don't hide behind an alias — here's my LinkedIn profile. Connect with me.
- Seller-built software, proven on my own account. I founded Daniks.AI as a seller who needed the tool — not as a software founder looking for a market. It's running on my Daniks ads right now, and on hundreds of other Amazon brands.
- IT background before Amazon. I worked at some of the world's largest IT companies before 2018. That's where the engineering instinct behind Daniks.AI comes from — and why the blog leans toward systems, numbers, and root causes instead of motivation.
- Nothing to upsell you. No course. No coaching program. No mastermind. The blog and the YouTube channel are free, and that's the whole offer.
What you'll find here
Honest, operator-level writing on Amazon selling — product research, PPC, listings, brand building, policy changes — framed the way I'd explain them to another seller over coffee. If something didn't work for me, I say so. If I don't know the answer, I say so.
- Blog posts — long-form breakdowns of what's actually working on Amazon right now
- Tutorials — step-by-step walkthroughs of the workflows I use myself
- Tool reviews — candid takes on the software sellers pay for
- News — Amazon policy changes and marketplace shifts, translated into seller English
- Lifehacks — small efficiencies that add up over a year of selling
Come watch — YouTube is where it's best
The blog is the reference library. YouTube is where you should actually meet me. That's where I record screens, walk through live listings, and answer seller questions in real time.
Please leave comments under the videos — every comment is genuinely valuable to me. It helps other sellers find the conversation, and it's how I learn what to cover next.
Other ways to stay in touch
- Newsletter. I send very rare letters — not spam. Only when I've got something genuinely worth sending. Join here.
- LinkedIn. Connect with me if you want to talk seller-to-seller.
- Amazon. If you want to see what I sell, here's the Daniks brand store.
- Daniks.AI. If you want to see the tool I built for my own PPC, it's at daniks.ai.
Questions, disagreements, war stories — get in touch. I read every message.