Paul Johnson
General Partner @ Flex Capital
San Francisco, United States
Paul Johnson is a seed investor at Flex Capital in San Francisco focused on Artificial Intelligence and Software. Paul started his entrepreneurial career aged 15. Aged 28, he relocated to San Francisco, investing his life savings to revolutionize the US healthcare landscape through the launch of Lemonaid Health - the first national direct-to-consumer healthcare service. He helped raise over $60 million in funding, built a fantastic team of over 150 and ledLemonaid to a $400 million sale in 2021.
- Total investments:
- 22
- Last investment:
- Lead investor:
- 0%
Last updated:
For AI agents: llms.txt
Industries Paul Johnson invests in
Stages Paul Johnson invests in
Countries Paul Johnson invests in
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Investment Focus
Industry
- Artificial Intelligence 10 (45%)
- Software 7 (32%)
- SaaS 3 (14%)
- Health Care 3 (14%)
- Finance 2 (9%)
Stage
- Seed 13 (59%)
- Pre-Seed 6 (27%)
- Series A 1 (5%)
- Series C 1 (5%)
Country
- United States 17 (77%)
- Germany 1 (5%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| CodeRabbit is an artificial intelligence company that offers detailed, line-by-line code suggestions and reviews within lines of code. | $143M / Series C / Aug 12, 2026 | ||
| Uniti AI develops artificial intelligence agents designed to assist real estate professionals by engaging, qualifying, and scheduling leads through various communication channels, including email, SMS, WhatsApp, and website chat, operating around the clock. The platform offers customization options, allowing users to tailor qualificationquestions, messaging styles, and escalation protocols without requiring coding skills. Uniti AI's solutions cater to diverse real estate sectors such as self-storage, coworking spaces, multifamily housing, brokerages, and event venues. By automating routine tasks, the company aims to enable human teams to focus on strategic, high-value activities. | $12M / Series A / Jul 21, 2026 | ||
| Nilo is a collaborative 3D platform that works across desktop, mobile, Discord, and Telegram. It combines generative AI with world-building tools, allowing users to generate assets, characters, animations, and code from natural language or drawings. The result: a radically simplified creation experience that lowers the barrier to entry andaccelerates how quickly new ideas can be built, tested, and shared.It’s creation at the speed of culture: whether spinning up a game inspired by today’s viral sound, turning a group chat joke into a playable world or crafting a custom hangout, Nilo transforms imagination into interaction — instantly and collaboratively.Nilo’s key features include:Text-to-3D generation: Create characters, environments, and code from prompts or images. Browser-Based: Nilo runs entirely in your browser - no installs, no downloads, no friction. Voice-enabled coding: A built-in AI-powered code editor that supports spoken commands and natural language for playful, social programming. Real-time multiplayer: Co-create and play with friends instantly.Nilo was founded in April 2024, bringing together veterans from Fortnite, Twitch, YouTube, Snapchat, Microsoft, Adobe, Blizzard, VRChat, Rec Room, and major VFX projects such as Avatar and Star Wars. | $4M / Seed / Sep 24, 2025 | ||
| Grata is an AI-enabled addiction treatment platform that pairs a virtual clinic (MAT, therapy, peer support) with software to triage, schedule, and support patients in under a minute. The patient app delivers continuous recovery touchpoints, and the EHR automates provider workflows and risk monitoring to improve retention and lower cost of care. | Pre-Seed / Sep 01, 2025 | ||
| Cekura AI is an AI based Software Development firm offering Developer Tool to observe and test AI voice agents. | $2.4M / Seed / Jul 01, 2025 | ||
| Argus Systems builds data and evaluation infrastructure for robotics and physical AI | $3M / Pre-Seed / Jun 23, 2025 | ||
| YieldClub is a mobile app that helps you grow your savings with higher returns than a traditional bank. | $2.5M / Pre-Seed / Jun 20, 2025 | ||
| Sygaldry Technologies is a tech company building quantum-accelerated AI servers to exponentially speed up AI training and inference. | $34M / Seed / Jun 15, 2025 | ||
| Generative AI company backed by Y Combinator building the future of accounting. | Seed / Jun 03, 2025 | ||
| PiLogic AI platform offers rapid analysis of radar data for real-time applications. | $4.1M / Seed / Apr 30, 2025 | ||
| See all 22 investments → | |||
Co-Investors
About Flex Capital
Evolving the Venture Model Our unique approach puts experienced CEOs at the center of the investment process. Our team combines seasoned venture investors and Dual Threat CEOs – founders who are running companies and also investors at Flex.We've Been There Before And Are Still In the Game We are the founding CEOs of companies like LiveRamp(NYSE: RAMP), Brightroll, SafeGraph and Pipedream. We are investors in 200+ companies including Chime, Coinbase, Niantic, StockX, GetYourGuide, Marqeta, and Datavant. We have led companies from founding to $300m+ in annual revenue and hundreds of employees. Deep Alignment & Hyper-Relevant Experience We are in the same shoes as the entrepreneurs we support. We get the founder’s journey because we are still on it ourselves. We believe in relationships built on trust and growth, instead of control. We want to be the first call without fear of repercussions.Seed to Series B We believe in empowering our fellow founders at the early stages of development. Whether we’re leading the next round or playing a supporting role on the cap table, we want to be on the team helping founders take breakthrough ideas and turn them into world-changing companies.
Flex Capital Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Auren Hoffman
General Partner
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David Hahn
Limited Partner & Investor
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Paul Johnson
General Partner
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Tod Sacerdoti
Founder, General Partner
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FAQ
What does Paul Johnson invest in?
Paul Johnson invests primarily in Artificial Intelligence, Software and SaaS startups, most often at Seed and Pre-Seed stage. Most of the 22 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
How do I contact Paul Johnson?
Public channels for Paul Johnson include LinkedIn, X (Twitter) and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
When did Paul Johnson last invest?
The most recent investment recorded for Paul Johnson closed in Aug 2026. Shizune tracks 22 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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