Jenn Kranz Guillen
Investor
Based in Venice, California, Jenn invests primarily in early-stage startups on the West Coast. Since joining Mucker, Jenn has led investments in startups across HealthTech, FinTech, Supply Chain, and EdTech sectors, and supported the external fundraising process for over 25 portfolio companies.
Previously, Jenn contributed to investments at MTech Capital and B Capital Group, where she enabled $500+mm in future transaction value for fundraising portfolio companies. At Halogen Ventures, she advised on acquisition strategies and fundraising initiatives.
In addition to venture capital, Jenn gained entrepreneurial experience at Haystack, where she executed a successful sales campaign that contributed 15% to the annual revenue target.
Prior to investing Jenn was the Venture Capital Practice leader and a top-ranked Technology Consultant at TriNet, specializing in the LA tech market. With a blend of investment savvy and entrepreneurial drive, she continues to support and grow innovative startups.
Jenn is a double Trojan (fight on!) having received her BA and MBA from the University of Southern California.
Jenn can be reached at jenn at mucker dot com.
Articles by Jenn Kranz Guillen
Startup Guide to AI Visibility: Be the Brand ChatGPT Recommends
Introduction Today, users aren’t just searching on Google. They’re asking ChatGPT, Claude, Google’s Gemini, Perplexity, and other AI systems for advice. AI visibility is the new frontier of brand awareness....
Practical Uses of AI & Automation for Startup Operations
In a recent Mucker Growth Series session, we invited Rock Vitale, Founder & CEO of Easie, to share how he’s helped early-stage teams move from manual, fragmented workflows to streamlined,...
2025 New York Tech Week Recap Of Mucker Sessions
Last week during New York Tech Week 2025, we joined more than 1,000 events hosted by founders, investors, and VCs. This post is a full Mucker recap of the three...
How to Build a Customer Support Function for Startups Using AI Tools with Alex Velinov
Delivering high-quality customer support can be one of the most resource-draining parts of a startup. The good news: we’re at a turning point where founders can use AI tools to...
Zero → 100: The Exact Steps We Took to Close Our First 100 Paying Customers
Going from zero customers to 100 in just four months sounds impossible—unless you’re a founder willing to roll up your sleeves and hustle relentlessly. I’m Gaurav Bhattacharya, co-founder of Jeeva.ai,...
Unblocking Startup Growth: Best Practices for Sales Discovery & Qualification with Richard Harris
Startups are in a constant race against time and resources, navigating complex sales environments with lean teams and limited margins for error. In a recent session from the Mucker Growth...