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Jeff Clavier

Jeff Clavier

Founding Partner at Uncork Capital, a seed-stage venture firm

Palo Alto, California
San Francisco, California
Joined January 2025

Network

78.9K connections
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Seed Stage Investors
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AI Deep Tech Founders
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VC Firm Operations
⚖️
Startup Legal Counsel
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Uncork Capital Team
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NVCA
🛰️
Loft Orbital Team

Summary

Jeff Clavier is a pioneering seed-stage venture capitalist, having founded Uncork Capital (originally SoftTech VC) in 2004, one of the earliest institutional seed funds in Silicon Valley. He has since overseen investments in over 280 companies, demonstrating a consistent ability to identify and support early-stage tech startups that have gone on to achieve significant success and exits, including Fitbit, Sendgrid, Eventbrite, Postmates, and Poshmark. uncorkcapital+5
With a strong background in technology, Jeff began his career as a developer and CTO at a fintech startup (Effix Systems) in France before transitioning into product development and leadership at Reuters Plc. His technical expertise provided a solid foundation for his later move into venture capital, where he served as a General Partner at Reuters' corporate venture fund (RVC Capital) before founding his own firm. uncorkcapital+2
Beyond his investment activities, Jeff is recognized for his contributions to the venture capital ecosystem, including a four-year term on the board of the National Venture Capital Association. He is a veteran of the Forbes Midas List and the CB Insights Top 100 VCs, underscoring his influence and success in the industry. uncorkcapital+3
Jeff combines a demanding professional life with personal interests, including a passion for wine, evident from his eclectic collection and a small wine project. He also maintains an active lifestyle, dedicating himself to logging 15,000 steps daily and engaging in activities like skiing, hiking, and strength training. uncorkcapital+1

Work

Education

Hobbies

An avid oenophile and 'grape nut' with an eclectic wine collection, who has also launched a small wine project in Walla Walla, WA. uncorkcapital

Loves spending time with friends and family, often engaging in activities such as traveling, skiing, and hiking. uncorkcapital

Dedicated to physical activity, logging 15,000 steps daily, often using a walking desk or 'walk and talk' sessions, and has become addicted to strength training on Tonal. uncorkcapital+1

Notes

CHCharles Hudsonsaid
JCJeff Clavier
stands out for their leadership and judgment in seed-stage investments in complex technical fields.

Mar 20, 2026

CHCharles Hudsonsaid that if they needed advice or insight into AI, robotics, or other Deep Tech sectors,
JCJeff Clavier
would be at the top of their list.

Mar 20, 2026

SDSarah Dusaid
JCJeff Clavier
is one of the most respected investors they know in edutainment.

Mar 13, 2026

SDSarah Dusaid that if they needed advice or insight into AI, robotics, or other Deep Tech sectors,
JCJeff Clavier
would be at the top of their list.

Mar 13, 2026

DGDiego Gomessaid
JCJeff Clavier
is one of the most influential Deep Tech leaders they know.

Mar 13, 2026

SLSusan Liusaid
JCJeff Clavier
is one of the best seed-stage deep tech investors they know.

Feb 26, 2026

CHCharles Hudsonsaid
JCJeff Clavier
is one of the most respected early-stage investors they know.

Jan 26, 2026

CHCharles Hudsonsaid
JCJeff Clavier
stands out for both the quality and amount of their pre-seed investments.

Dec 20, 2025

CHCharles Hudsonsaid
JCJeff Clavier
is one of the most insightful early-stage investors they've met in healthcare AI.

Dec 12, 2025

AMAndy McLoughlinsaid they would count
JCJeff Clavier
among the best early-stage investors focused on robotics or industrial tech.

Nov 24, 2025

SDSarah Dusaid that if they were launching an edutech startup at the pre-seed stage,
JCJeff Clavier
would be among their top choices as an investor.

Nov 4, 2025

GTGarry Tansaid
JCJeff Clavier
is someone they’d recommend to SaaS founders seeking angel investment.

Oct 17, 2025

GTGarry Tansaid they've seen
JCJeff Clavier
add meaningful value to early-stage founders in B2B SaaS or AI.

Oct 1, 2025

MWMyles Weissledersaid that if they were building a seed-stage B2B SaaS or AI company,
JCJeff Clavier
would be among their first choices to have on their investor team.

Oct 1, 2025

LFLaura Fittonsaid they've seen
JCJeff Clavier
add meaningful value to early-stage founders in B2B SaaS or AI.

Sep 30, 2025

ARAdriana Rochesaid
JCJeff Clavier
is one of the most respected investors they've seen backing CPG startups.

Sep 10, 2025

SDSarah Dusaid
JCJeff Clavier
is one of the most insightful seed investors they've worked with, especially in network-based businesses.

Aug 11, 2025

SDSarah Dusaid they've seen
JCJeff Clavier
consistently make smart bets on very early-stage robotics startups.

Aug 11, 2025

ACAshley Cravenssaid
JCJeff Clavier
is one of their favorite early stage investors to work with.

Jun 17, 2025