CRO Specialist & Growth Expert

I help ecommerce brands unlock revenue through data-driven experimentation and strategic optimization

Joe Pennebaker

About Me

I'm an experienced marketer and CRO specialist with a deep passion for the intersection of design, data, and user psychology. Currently at Thirty Madison, I've spent the last decade optimizing ecommerce experiences for brands ranging from early-stage startups to established market leaders.

My background spans UX/UI design, conversion rate optimization, brand management, and digital marketing. What drives me is the thrill of discovering insights in data and translating them into beautiful, high-converting experiences. I've generated millions in incremental revenue through systematic testing and optimization programs.

When I'm not optimizing conversion funnels, you'll find me playing ping pong, exploring new music production tools, or spending time with my family in Atlanta.

$20M+
Portfolio Revenue Managed
300+
A/B Tests Executed
10+
Years in Ecommerce

Areas of Expertise

Conversion Rate Optimization

Systematic A/B testing, multivariate testing, and experimentation frameworks that drive measurable revenue growth

UX/UI Design

User-centered design that balances aesthetics with functionality, informed by behavioral data and user research

Growth Strategy

Data-driven strategies to identify and capitalize on growth opportunities across the customer journey

Brand Management

Building and scaling brand identity, managing product launches, and creating cohesive brand experiences

Digital Marketing

Paid advertising, email marketing, content strategy, and omnichannel campaigns that drive customer acquisition

Analytics & Insights

Google Analytics, data interpretation, and turning raw metrics into actionable business intelligence

Case Studies

Real results from real optimization work

+22%
CVR Increase

Stur Drinks

Onsite Testing Program

Adding a competitor comparison block to the homepage helped Stur position their unique value proposition above competitors. Purchase rate increased 22% with 95% confidence and revenue per visitor increased 39% with 99% confidence.

Homepage Optimization Competitive Analysis Value Prop Testing
+24%
CVR Increase

Happy Viking

Onsite Testing Program

Tested video vs. still imagery on homepage hero section. Found that still imagery performed better on mobile while video excelled on desktop. Device-specific optimization led to significant conversion improvements.

Device Optimization Content Testing Hero Section
+15%
Revenue Increase

Native Pet

Onsite Testing Program

Implemented a bundling widget on product pages that increased average order value by 8% while simultaneously increasing transaction rate by 7%. This dual lift resulted in 15% revenue per user growth.

Product Page AOV Optimization Bundling Strategy
+19%
CVR Increase

RtA

Onsite Testing Program

Tested placement of value propositions directly underneath the add-to-cart button. This strategic positioning reduced cart hesitancy and increased purchase confidence, resulting in 19% CVR improvement.

Cart Optimization Trust Building Value Props

Strategic Partnerships

Leveraging industry-leading platforms for optimal results

Convert.com Partner

Expert in advanced A/B testing and experimentation using Convert's powerful platform for enterprise-scale optimization

Intelligems Partner

Specialized knowledge in dynamic pricing, personalization, and revenue optimization through Intelligems integration

Lemma Lift is officially certified as both a Convert.com Partner and Intelligems Partner, ensuring access to the latest tools and best practices in CRO and optimization.

Professional Journey

Lemma Lift

Founder & CRO Specialist

Built and scaled a CRO agency specializing in conversion optimization for ecommerce brands. Managed portfolio of 8+ businesses with combined annual revenue exceeding $20M

Thirty Madison

Current Role

Leading CRO and optimization initiatives for health and wellness ecommerce brands

Levitate Foundry

CRO Specialist

Drove conversion optimization and experimentation programs for premium ecommerce brands. Published as "The Man Behind Levitate's CRO" in industry publications

Hawke Media

Digital Marketing Specialist

5 years managing paid advertising, content strategy, and growth initiatives across diverse ecommerce portfolios

BigWood Boards

Brand Manager & Growth Lead

Grew company 30% YoY, achieved first profitable year, increased cyber week sales 600% YoY, and built content program that doubled organic revenue

Let's Work Together

Whether you're looking to optimize conversion rates, scale your growth, or transform your digital presence, I'd love to chat.