A deeptech seed fund with the highest signal.
We take bets on crazy ideas very early—across every hardware sector. Most importantly, we're extremely helpful to founders. As the creators of Deep Checks, we know almost every deeptech VC. When we invest, VCs take notice—and can fill out the rest of your round within days. Our deeptech companies have a 100% Seed to Series A rate.
We built DeepChecks.vc, which is the largest source of deeptech deal flow in the world. Deep Checks' CRM of scientist founders spans every niche from mining robotics to photonic chip interconnects—we have unparalleled reach.
As a result, when we invest, we intro you to most of your initial customers, partners, suppliers, and advisors. Because they're among the thousands of engineers who know and trust us. No one is as connected as we are in deeptech.
And given the quantity of deeptech VCs behind Deep Checks, we're in an incredible position to make investor intros for your future fundraising. We give you a serious advantage.
Case Studies
The best engineers and scientists come to us first. We’re often the first check for unicorn founders pursuing their new deeptech companies.
Julian optionally embeds into your weekly growth sprints and works closely to build a massive social presence to help with recruiting, press, and sales.
The results speak for themselves— fund 1's deeptech companies have a 100% Seed to Series A graduation rate. Those three-year-old companies have already raised $600M+.
Portfolio—we invest everywhere
Team
Julian was the VP of Marketing for Webflow ($4B+ valuation) and later ran growth for Heap Analytics ($960M+ valuation).
He then founded Demand Curve (YC S19), the largest educator of growth marketing for startups. His agency, Bell Curve, has grown LinkedIn, Ancestry, TechCrunch, and more. He also wrote TechCrunch’s marketing column.
However, most people know him for his longform handbooks on Julian.com. There, he built a large audience of startup founders.
Before growth marketing, Julian was an engineer. He built one of the most popular open source libraries: Velocity.js. He was awarded the Stripe Open Source grant and was profiled in Forbes.
Jacob was a founder and startup revenue leader before turning investor.
After founding a med device company, he was the CRO at MedStack, a healthcare DevOps platform, and then Head of Growth at Mammoth, an enterprise decarbonization company. He brings extensive sales and ops experience to hardware and climate companies.
Why Julian Capital?
Submit your deck
We review decks weekly. Pre-seed and seed statups are welcome. In 2026, we've already invested in two startups submitted via this form.
We only invest in companies making something physical (AI software doesn't count). All sectors are welcome, including robotics, climate, chemicals, materials, medtech, chips, and more. We love early ideas, crazy ideas, and founders pursuing their life's mission.
