A partner who understands the realities of Amazon
Growing on Amazon isn’t about hacks or shortcuts. It’s about disciplined execution, clear strategy, and understanding a channel that changes constantly. I’ve spent years inside the platform, managing operations, optimizing performance, and helping brands turn Amazon from a stress point into a reliable, scalable revenue engine.
I work with founders and teams who want a partner who thinks like an operator, not an agency. Someone who can see the whole picture, ask the right questions, and build a plan that holds up in the real world.
Brett Lemker
I started my career in Boulder, Colorado, working for a small organic beverage brand that I launched on Amazon in 2008. What began as a single product listing quickly became the company’s top-performing channel, and the start of a career spent operating inside Amazon long before it became the ecosystem it is today.
From there, I joined Beekeeper Marketing as an early team member, supporting national CPG brands as the company scaled and was later acquired by Advantage Solutions. I became the internal subject-matter expert for Seller Central, training and supporting more than 100 team members while managing complex operational and strategic challenges for clients.
Over the last two decades, I’ve worked with more than 300 brands and managed over $500 million in cumulative Amazon revenue, from early-stage startups to globally recognized names.
I formed optiAMZ, LLC in 2016, began preparing for the agency launch in 2020, and officially launched in April 2021. As founder and CEO, I grew the business from myself to 17 employees, overseeing strategy, advertising, operations, launches, and turnarounds. In 2023, optiAMZ became The Topo Agency, expanding into omnichannel services while managing $150 million in annual client revenue.
Building and leading that agency gave me a firsthand understanding of both growth and complexity. Revenue alone means little if margins are weak, operations are inefficient, or the business becomes harder to run with every new customer.
Those years taught me two things:
Most growth problems aren’t solved by more dashboards or more spend.
The best results come from experienced operators who stay close to the work and understand how each decision affects the whole business.
Today, through Ajarro, I work directly with brands, founders, and investors who want experienced Amazon guidance and hands-on execution. I intentionally keep my client load small so every engagement receives focused, thoughtful attention. You can work with me for a single advisory session, a defined project, or recurring hourly support.
My approach is simple:
Anchor decisions in contribution margin and unit economics
Fix the foundation before scaling
Spend where it earns, not where it looks busy
Move deliberately, not reactively
Ajarro exists to help brands build profitable, manageable businesses. My goal is to under-promise, over-deliver, and leave clients with stronger operations and clearer decisions long after the engagement ends.
my approach
I’m direct, data‑driven, and focused on what actually moves the needle. No fluff, no jargon, no over-complication, just clear strategy, clean execution, and consistent communication.
I stay close to the work, close to the numbers, and close to the people making decisions. You’ll always know what’s happening, why it matters, and what comes next.
what i believe
Amazon rewards clarity, consistency, and operational discipline
Brands grow faster when they understand the “why,” not just the “what”
Strong communication prevents most problems before they start
Strategy only matters when it’s paired with execution
Long‑term success comes from building systems, not chasing trends
why brands choose to work with me
I bring the perspective of someone who’s been in the weeds, managing inventory, fixing listings, building ad structures, solving compliance issues, and navigating the unexpected. I help brands stop guessing, stop reacting, and move forward with structure and confidence.
Clients work with me because they want a partner who:
Thinks like part of their team
Communicates clearly and consistently
Makes decisions based on data, not guesswork
Understands the operational realities behind the strategy
Cares about long‑term stability as much as short‑term wins
A relationship built on trust
I take on a limited number of clients so I can stay hands‑on and fully present. When we work together, you get someone who’s invested, someone who shows up prepared, communicates proactively, and treats your brand like it matters.
If you’re looking for a partner who brings clarity, structure, and senior‑level thinking to your Amazon channel, you’re in the right place.