JJ Traynor
Managing Partner and co-founder at Serpentine Lake Capital LLP
London, England
JJ Traynor, Managing Partner and co-founder at Serpentine Lake Capital LLP is an active investor based in London, England. This profile covers what JJ Traynor backs, at which stage, and how founders can reach out in 2026.
Dr JJ Traynor has an international career in energy and capital markets, focusing on emerging technologies and ESG impact, including climate change and hydrogen technology.
- Investor type
- VC
- Stages
- Early Stage VentureLate Stage Venture
- Invests in
- Climate & Energy
- Location
- London, England
- Typical check
- $3.8M
How to reach JJ Traynor
Angels and operators like JJ Traynor reply to specific, personalized notes that show real traction, not mass blasts. Build a verified list, write a note that fits their thesis, and track replies, all on Round Funded.
Connect with JJ Traynor
About this profile
This profile is part of Round Funded, an investor database and outreach platform for founders. It covers 60,000+ active VCs, angels, family offices and accelerators with verified contacts, lets you send pitches from your own Gmail, and includes a free Data Room for your raise.
Frequently Asked Questions
What does JJ Traynor invest in?
JJ Traynor invests in Climate & Energy, typically at Early Stage Venture and Late Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does JJ Traynor invest at?
JJ Traynor typically invests at Early Stage Venture and Late Stage Venture. Lead with traction that fits the stage when you reach out.
What is JJ Traynor's typical check size?
JJ Traynor typically writes checks around $3.8M. Use it as a signal for whether your raise fits their stage.
How do I contact JJ Traynor?
Unlock JJ Traynor's verified email on Round Funded and send a personalized pitch. We surface only deliverable contacts so your outreach lands.
What is Round Funded?
Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.