Private Equity & Investors

"Sierra Growth Partners helped us refine our GTM strategy, optimize our ICP & segmentation and align our team —leading to higher win rates, larger deal sizes, and faster growth. Their sales and customer success playbooks strengthened our entire revenue engine. They’ve been indispensable partners, combining strategy and execution to drive consistent, measurable impact."

— Bart Bartlett, Founder & CEO, DemandZEN

“Brett helped scale our business from $14M to $40M and from 65 to 320 employees —while improving margins, customer NPS, and global brand visibility. We achieved industry-leading growth rates under his metrics-driven leadership. Brett combines data-fueled execution with deep customer empathy. A trusted partner and communicator, he was critical to our success and exit.”

— Shashi Mudunuri, Founder & CEO, Research Square

“When I joined, marketing was a ‘black box.’ Brett and his team helped us build attribution clarity, optimize spend, and turn marketing into a revenue engine—sourcing 34% of new deals. From hiring and budgeting to conversion rate optimization and events, his strategic, data-driven guidance transformed our function. It’s the most effective marketing strategy I’ve seen in my career.”

— Emilia Pintos, Director of Marketing, Record360

“Working with Brett and his team was a transformative experience!  They brought an energy and systems-level thinking to our go-to-market teams across Radicle Health. His people-first leadership fostered a thriving, collaborative culture while keeping us focused on measurable outcomes. He helped align our sales and marketing strategy across multiple businesses, creating a unified growth engine. We couldn’t have done it without him.”

— Lisa Potter, VP of Marketing, Radicle Health

“We worked together for two years, and Brett was a trusted advisor throughout. His expertise in sales strategy, budgeting, and forecasting—combined with thoughtful challenges and encouragement—was invaluable as I built a stronger, more resilient growth org. I’m grateful for his partnership. My team and I are in a much better place because of him.”

— Amanda Sullivan, VP of Growth at Sierra Interactive

“Brett was instrumental in building a scalable growth engine at Record360. He helped us optimize marketing attribution, launch our SDR program, and refine sales forecasting—resulting in a 135% Net ARR increase and a record-setting exit. His strategic insight, data-driven approach, and ability to mentor GTM leaders made a lasting impact.”

— Robert Daniel, Chief Revenue Officer, Record360

“Sierra Growth Partners has been a trusted partner at the highest level—providing board-level guidance, fractional CRO leadership, and actionable GTM playbooks leading to accelerated growth. Brett is the rare ‘CEO whisperer’—strategic, steady, and focused on outcomes. It’s remarkable how he’s built deep trust with both the co-founders and Board, as well as front-line teams alike.”

— William Pigeon, Co-Founder & CEO, Tablet Command

“We connected the dots between marketing attribution, unit economics, and scalable growth. Brett & his team coached us through key inflection points, helped onboard new leaders, and brought structure to our strategy. His impact on how we scale—and how we think—has been lasting. I’ve learned more from him than anyone else in SaaS marketing.”

— David Bitton, Co-Founder & CMO at Doorloop

“Brett was instrumental in helping us scale pipeline in line with our unit economics and expand into new market segments. His strategic guidance helped us build a predictable growth engine—one of the key drivers behind our premium exit. He’s a rare mix of thoughtful advisor and hands-on growth operator.”

— Alex Altvater, VP of Marketing & Partnerships, Trucker Tools

“Brett was a strategic partner in building our multi-year growth plan. He helped us test market hypotheses, align our budgeting process with revenue goals, and implement a system of leading indicators. His data-driven approach gave us clarity and confidence in our forecasts—and helped us plan for sustainable, scalable growth.”

— Dushant Ravindra, CFO at Record360

“Brett and his team quickly sized up our product/market fit and identified immediate ways to ramp up our sales engine while staying true to the core strengths of our platform. They integrated seamlessly with our sales team, brought clarity to our process, and helped us operate more efficiently—setting us up for scalable, sustainable growth in a traditionally slow-moving niche market.”

— Andy Bozzo, Co-Founder, Tablet Command