Justin Kaufenberg

Managing Director , Rally Ventures
Justin Kaufenberg, a repeat founder who scaled SportsEngine from a dorm-room startup to NBC Sports acquisition and started 10+ ventures, specializes in partner-driven SaaS embedding payments, insurance and compliance-informed trust-and-safety.
How to contact Justin Kaufenberg
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Avg Check
$50K - $5M
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Does their fund Lead?
Yes
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Geos their fund invests in
USA
Justin Kaufenberg
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Sectors their fund invests in
SaaS
Cybersecurity
AI
Fintech
Health
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$50K - $5M
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Yes
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About Justin Kaufenberg

Justin Kaufenberg built and scaled SportsEngine from a dorm-room startup into a leading youth sports software platform acquired by NBC Sports, and has founded or co-founded 10+ businesses, giving him unusually deep repeat founder experience compared with many VCs. He brings unique expertise in building partner and ecosystem-driven SaaS+ models where software platforms embed financial services like payments and insurance, and has first-hand experience building compliance-focused platforms that directly informs his investments in human security and trust-and-safety companies.

Justin Kaufenberg's Interests

What they've been talking about across their social media accounts
  • Strong emphasis on the SaaS+ business model, specifically the integration of embedded finance tools like payments and insurance into vertical software. He draws heavily on his operational experience at SportsEngine to validate this thesis, frequently citing portfolio companies like JustiFi and Vertical Insure as examples of the correct path forward for monetizing a customer base beyond simple subscription fees.
  • Prioritizes deep technical architecture and product capability over surface-level user interface design. He argues that for business software, founders often mistakenly believe a modern look is what users want, when in reality, robust functionality and the correct architectural decisions are infinitely more important for long-term success.
  • Focuses on high standards of personal and team conduct rather than just shared goals. He believes that a winning culture is built by individuals choosing to be exceptional every single day, and notes that customers and investors ultimately buy from people who are easy and enjoyable to work with, not just people they like personally.
  • Advocates for respectful and mature leadership practices, particularly regarding employee management. He advises leaders to never embarrass team members regardless of their position and emphasizes that even strong disagreements on business decisions can be handled without stripping someone of their dignity.
  • Passionate about ice hockey and the strategic elements of coaching, frequently commenting on the Minnesota Wild and high school level play. While this is a personal interest, he often frames it through the lens of performance and dedication, praising specific plays or coaching roles that demonstrate high-level execution.

About their Fund

Rally Ventures

Sectors
SaaS, Cybersecurity, AI, Fintech, Health
Rounds
Seed - Series B+
Avg Check Size
$50K - $5M

Rally Ventures has built a network of 100+ senior tech operators who have personally invested over $130M into the fund and help source 60%+ of deals while engaging as board members, advisors, and customers for portfolio companies. The firm created and coined the "SaaS+" model for vertical SaaS platforms that layer embedded fintech products to multiply revenue per customer, backed by Managing Director Justin Kaufenberg's experience building SportsEngine into one of the first at-scale SaaS+ businesses before selling to NBC Sports.

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