Jenn Kranz Guillen
Investor
Based in Venice, California, Jenn Kranz Guillen is an investor at Mucker Capital, where she partners with early-stage startups across the West Coast. She has led investments across HealthTech, FinTech, and Supply Chain, with a particular focus on vertical SaaS platforms and AI-native applications transforming legacy industries. Jenn has supported more than 30 portfolio companies through successful fundraising efforts—shaping narratives, optimizing materials, and facilitating investor introductions.
Jenn brings experience from both sides of the table. She previously contributed to investments at MTech Capital and B Capital Group, enabling over $500M in potential downstream transaction value. At Halogen Ventures, she supported acquisition strategies and LP fundraising initiatives. Earlier, she joined the founding team at Haystack, a venture-backed communications startup, where she built and executed the company’s first GTM sales campaign—driving pipeline that contributed 15% of the annual revenue target.
Jenn began her career at TriNet, where she served as the Venture Capital Practice Leader and was recognized as the top-ranked Technology Consultant in Los Angeles—TriNet’s third-largest market—advising early-stage teams on HR and operational strategy.
A double Trojan (fight on!), Jenn earned both her MBA and BA from the University of Southern California.
Jenn can be reached at jenn at mucker dot com.
Articles by Jenn Kranz Guillen
LA Tech Week 2025 Day 1 Recap: AI Building – Monday Oct 13
We hosted three full days of events during LA Tech Week, each one focused on helping founders learn, connect, and build with the latest in AI and startup growth. Day...
Using Customer Feedback to Build a Product that Customers Will Love
Customer feedback is the lifeblood of successful product development, but many startups struggle with collecting, validating, and prioritizing the constant stream of input from users, advisors, and internal teams. In...
How Shaun Merritt Vibe-Coded Karrot.ai As A Solo Builder
I recently had the opportunity to chat with Shaun Merritt, cofounder and CTO of Karrot.ai, a LinkedIn ABM tool. Shaun was kind enough to share a comprehensive breakdown of how...
7 Steps to Build a Product That Sells Itself
The Founder’s Mental Health Playbook: What I Learned After Nearly Burning Out
A hard-won guide to staying mentally healthy while building a startup I founded Stitcher, the podcast platform, in 2007 and ran it for seven years until we sold in 2014....
Answer Engine Optimization (AEO) for Early Stage Companies
In our latest session from the Mucker Growth Series featuring Ethan Smith from Graphite, we explored AEO, a significant new approach for optimizing visibility in AI-driven search, particularly relevant as...