Profitable amazon growth.
No retainers.
No busy work.

I’m Brett Lemker, a 19-year e-commerce operator and former Amazon agency founder. I help brands grow profitably through contribution margin strategy, operational execution, and data-driven decisions, not vanity metrics or automation guesswork.

You only pay for meaningful work that drives outcomes. No retainers. No monitoring fees. No junior teams.

Work is billed hourly or through discounted prepaid hour bundles. You get senior-level execution, ongoing optimization, and full visibility into what’s happening, why it’s happening, and how it impacts profit.

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Brands advised

300+

Revenue managed

$500m

Years of experience

19

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Why Trust Ajarro?

experience built for profit. not reporting.

Every brand is unique and so is the work required. Whether you need strategic guidance or hands-on execution, our engagement adapts to your stage, goals, and pace.

Work by the hour, or choose 8-hour or 40-hour bundles when you need deeper support. No retainers. No lock-ins. Just high-impact execution when it matters.

I only take on a limited number of clients to ensure responsiveness and meaningful attention, not “set it and forget it” account handling.

Every strategy, forecast, and audit is designed to protect one thing: your margin.

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The Anti-Agency Philosophy

Traditional agencies chase vanity metrics, layer teams, and inflate ad-spend without improving contribution margin. Most of the work happens behind dashboards, not inside the business.

Ajarro replaces that with margin-first strategy, transparent analytics, and senior-level execution. No middle layers. No automated “set and forget” systems. No needless spend.

“Brett isn’t just a consultant, he’s a partner who connects every decision to profitability.”

amazon isn’t the challenge - the agency model is.

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Stratetic consulting & advisory

bring me any amazon or e-commerce challenge: strategy, operations, or profitability

You’re not paying for hours, you’re leveraging nearly two decades of operating experience. Whether it’s forecasting, restructuring spend, solving operational issues, or improving contribution margin: the work is tailored to what matters the most.

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What I Do

strategy and execution for profitable, SUSTAINABLE growth

I deliver VP-level strategy and hands-on execution without the overhead, packages, or templated workflows agencies depend on. The goal is simple: help companies and operators make confident, margin protecting decisions that scale.

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Operator Philosophy

built on principles - not retainers, packages, or automation

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Ajarro operates under a few core rules:

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    No Retainers:

    You only pay for work performed.

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    No Handoffs

    All work is performed by a 19-year e-commerce veteran and operator.

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    Transparency Always:

    No hidden markups or retainer chains. No inflated reporting or hours.

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    Mentorship + Execution:

    You learn the why behind every move.

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    Proactive Monitoring

    I monitor all client accounts several times throughout the day, free of charge, to catch issues before they become expensive.

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quiet execution. transparent decisions. margin as the north star.

Ready to discuss your needs? 

A 30-minute consultation can reveal your biggest opportunities for margin, clarity, and sustainable growth.

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