Jeff Lawson
About Jeff Lawson
Jeff Lawson co-founded Twilio in 2008 with Evan Cooke and John Wolthuis. Twilio makes programmable communications tools that developers use to add calls and messaging to software. Crunchbase lists him as Twilio co-founder and CEO from 2008 to January 2024.
Before Twilio he was co-founder and CTO of NineStar, founding CTO of StubHub, co-founder, CEO and CTO of Versity, and one of the first product managers at Amazon Web Services. In 2021 he published a book on building software with developers, "Ask Your Developer."
Crunchbase lists him as co-founder and CEO of Inertia from January 2025. A April 2026 angel registry newsletter describes Inertia as a commercial fusion energy company. Crunchbase also lists him as an owner of The Onion since May 2024. He is based in San Francisco.
Crunchbase lists 18 personal investments for Lawson. Tracxn counts 12 portfolio companies and lists his investment locations as the United States and Sweden. The two sources count differently, so treat both numbers as approximate.
Crunchbase's activity timeline shows him in rounds going back to Topknot in December 2020. Later entries include RevOps (2021), Welcome and Superblocks (2022), MaintainX (2023), Bland AI (2024), Julius AI (2025) and Arcjet (2025). These are round announcement dates. They do not necessarily show when he wrote his check.
Lawson is listed among the angels in ActionAI's $10M Seed, reported in April 2026. FinSMEs says the round was led by UAE-based investors. It describes ActionAI as a company building AI for mission-critical enterprise workflows, with an emphasis on transparency, accuracy and compliance. Aravind Srinivas and Guillermo Rauch are also named as angels in that round.
Crunchbase and Tracxn list other AI-related investments. These include Julius AI (Seed, July 2025), Resolve AI (Seed, October 2024), Bland AI (Series A in August 2024 and a later Series C) and Pegasi AI (Pre-Seed).
His public portfolio leans toward developer tools, enterprise software and applied AI. It includes companies such as Arcjet, Socket and Superblocks. Tracxn also lists MaintainX. The portfolio spans Pre-Seed through Series C. Check size, fund size and any stated investment criteria are not public, so none are given here.
- ActionAI: AI for mission-critical enterprise automation. Participated in the $10M Seed reported April 2026.
- Julius AI: AI data analysis company. Participated in the Seed round announced July 2025.
- Resolve AI: AI for operating software in production. Seed round, October 2024 (Tracxn).
- Bland AI: AI voice agents company. Participated in the Series A (August 2024) and later the Series C (Crunchbase).
- MaintainX: Maintenance software company. Participated in the Series C, December 2023.
- Superblocks: Internal tools platform. Participated in the Series A, August 2022.
- Arcjet: Developer security company. Participated in a round announced October 2025.
- crunchbase.com/person/jeff-lawson
- crunchbase.com/person/jeff-lawson/person_overview_investor/timeline
- tracxn.com/d/people/jeff-lawson/__p4K5SDNLn0FTs_b73L75Icr0aDrXZfXsSSCz
- twilio.com/en-us/blog/authors/author.jeff-lawson
- buttondown.com/raisetrack/archive/angel-registry-update-april-22-2026
- finsmes.com/2026/04/actionai-raises-10m-in-seed-funding.html
- linkedin.com/in/jeffiel
- techcrunch.com/2021/01/15/twilio-ceo-jeff-lawson-says-wisdom-lies-with
Investing activity
Jeff Lawson appears in 1 AI deal tracked by the Lounge deals desk. The rounds are mostly Seed, with a median round size of $10M. The most recent is ActionAI (Seed, $10M, Apr 2026).
Jeff Lawson most often invests alongside Guillermo Rauch and Aravind Srinivas, and the companies they back on Lounge are mostly in AI.
Deals
Frequently asked questions about Jeff Lawson
Did Jeff Lawson invest in ActionAI?
Yes. An angel registry newsletter from April 2026 lists him among the angels in ActionAI's $10M Seed, alongside Aravind Srinivas and Guillermo Rauch. FinSMEs reports the round was led by UAE-based investors.
What is Jeff Lawson's check size as an angel?
He has not made his check sizes public, and we found no reliable source for them. Check with him directly or look at the specific rounds he has joined.
What kinds of startups does Jeff Lawson back?
His public investments are mostly developer tools, enterprise software and AI companies. Examples include Julius AI, Resolve AI, Bland AI, Socket and Superblocks. He has invested from Pre-Seed to Series C.
Who is Jeff Lawson?
He is the co-founder and former CEO of Twilio, which he started in 2008. Crunchbase and LinkedIn list him as co-founder and CEO of Inertia, and Crunchbase also lists him as an owner of The Onion.
How many companies has Jeff Lawson invested in?
Crunchbase lists 18 personal investments and Tracxn lists 12 portfolio companies. The counts differ because each source tracks rounds differently.
How should founders approach Jeff Lawson?
He has no public pitch process or stated criteria that we found. His LinkedIn and X profiles are listed on this page. A warm introduction from a founder in his portfolio is a common route.
Is Jeff Lawson an angel investor?
Yes. Jeff Lawson invests personally as an angel.
What AI companies has Jeff Lawson invested in?
Jeff Lawson's AI investments include ActionAI. The 1 round on Lounge are listed on this page with amounts, dates and co-investors.
What stage does Jeff Lawson invest at?
In the rounds tracked on Lounge, Jeff Lawson has invested at Seed, with a median round of $10M.
Who does Jeff Lawson co-invest with?
Jeff Lawson's most frequent co-investors on Lounge are Guillermo Rauch (1 deal) and Aravind Srinivas (1 deal).