Jeff Clavier

Who they are

Jeff Clavier is Founding Partner of Uncork Capital — a Paris-trained engineer who started the firm in 2004 with under $1 million and built it into one of Silicon Valley's most established seed funds, backing Fitbit, Eventbrite, Postmates, and Poshmark.

Person

Jeff Clavier took his MS in Computer Science from Université Paris Descartes (Paris V) — with a focus on distributed computing — then cut his teeth as a developer and product leader at Effix, a French fintech startup, before moving into a General Partner role at Reuters Venture Capital (RVC), running U.S. operations. That move from engineer to corporate VC was the hinge: in 2004, he left to start SoftTech VC with less than $1 million in a first fund, betting he could back founders at the very earliest moment. Over two decades the firm grew into Uncork Capital, deploying capital across AI, SaaS, developer tools, consumer, and deeptech — with over 275 companies backed, including Fitbit, Eventbrite, Postmates, and Poshmark. He was ranked #81 on the Forbes Midas List of Top Tech Investors in 2017. He started blogging as early as 2004 under the name 'Software Only,' covering social media, search, and online communities — back when that was how seed investors built a profile. The through-line is a technologist who turned market intuition into institutional capital, staying at the earliest stage by design.

Company

In May 2025, Uncork Capital closed $300 million in new funds — a $225 million seed fund (Uncork VIII) and a $75 million growth fund (Uncork Plus IV) — with the capital earmarked for deployment over the next three years. The close coincided with a leadership transition: Andy McLoughlin became sole Managing Partner in May 2025 following Jeff Clavier's step back from that role, marking a generational handoff at the firm he founded. The strategy remains anchored on leading seed rounds — roughly 35 per fund — in B2B software, developer tools, and infrastructure. Uncork has backed over 275 companies since 2004 and has co-invested alongside funds like SV Angel.

Market

Uncork Capital operates in the highly competitive seed-stage venture market in Silicon Valley, where it differentiates by leading rounds (rather than following) and focusing on B2B software, developer tools, and infrastructure. Its portfolio pedigree — Facebook, Intuit, Poshmark, Fitbit, Eventbrite — gives it brand gravity with founders, though it competes for the best seed deals against both established multi-stage funds moving earlier and a crowded field of dedicated seed and pre-seed vehicles.

Network

Jeff's closest professional network is the Uncork Capital partnership: Andy McLoughlin, Amy Saper, Susan Liu, and Tripp Jones are all partners at the firm. He has served on the board of the National Venture Capital Association and Venture Forward, connecting him to the broader institutional VC ecosystem.

Andy McLoughlin· Managing Partner, Uncork Capital
Amy Saper· Partner, Uncork Capital
Susan Liu· Partner, Uncork Capital
Tripp Jones· Partner, Uncork Capital

How they likely show up

Founded Uncork in 2004 and ran it for over two decades → thinks in fund cycles and long founder relationships, not short-term deal flow.
Started with a sub-$1 million first fund and built to $300 million in committed capital → comfortable with constraint and patient about scale; not a spray-and-pray operator.
Engineering background (distributed computing, CTO roles) before becoming a VC → likely engages on product and technical architecture, not just market sizing and pitch decks.
Blogged under 'Software Only' from 2004 onward on social media and search → early adopter instinct, willing to invest conviction ahead of consensus.
Possibly — stepped back from the Managing Partner role in May 2025 while remaining Founding Partner → may be in a principal/emeritus mode, selective about new commitments.

Conversation tips

→ Reference a specific portfolio company — Fitbit, Poshmark, or Postmates — and ask what the early thesis looked like; he's been in these from seed and will have a real story.
→ His engineering background is genuine, not decorative — don't shy away from technical depth on product or infrastructure questions.
→ Acknowledge the leadership transition at Uncork openly if it's relevant; his step back from Managing Partner in May 2025 is public and he likely has a clear view of what he's doing next.
→ He's been in Silicon Valley seed investing since 2004 — treat him as a primary source on how the seed market has structurally changed, not just as a fund manager.

Toolbox

Openers

Open on the May 2025 leadership transition — Andy McLoughlin taking sole Managing Partner while Jeff remains Founding Partner is a specific, recent move that invites a real conversation about what he's focused on now and what comes next.
Reference the 'Software Only' blog, which he started in 2004 alongside the fund — it's a signal that he was thinking in public about social media and search before most VCs were paying attention, and it's the kind of detail that shows you've done the work.
Bring up the Uncork VIII close at $225 million — the decision to pair it with a $75 million growth fund (Plus IV) reflects a deliberate bet on following winners, and asking about the strategic logic behind that structure will land well.

Discovery questions

When you started SoftTech with less than $1 million in 2004, what did a 'seed round' actually look like — and how has the definition of seed changed what you're willing to lead today?
Fitbit, Eventbrite, Postmates, Poshmark — looking back at those early bets, what did you see at seed stage that the market hadn't priced in yet?
With Andy McLoughlin stepping into the Managing Partner role, how are you thinking about where you personally add the most signal now — is it specific sectors, specific founder profiles, or something else?

Avoid

Don't treat him primarily as a networker or brand ambassador — his engineering background is real, and leading with shallow 'ecosystem' framing rather than substantive product or market questions will signal you haven't done the homework.

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