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
7 Steps to Build a Product That Sells Itself
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...
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...
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...