Jeff Lawson
Co-Founder & CEO @ Twilio
San Francisco, United States
Jeff Lawson is a Co-Founder and CEO at Twilio. He is a serial inventor with over 15 years of entrepreneurial and product experience. Prior to co-founding Twilio, Jeff was Founder & CTO of NineStar, Founding CTO of Stubhub.com and Founder, CEO & CTO of Versity. He was also one of the original product managers for Amazon Web Services.Atevery business, Jeff identified the fundamental need for a platform for developers and companies to easily build communications-based business solutions.Jeff grew up in the suburbs of Detroit, started his first company in middle school, and earned his BS in Computer Science & Film/Video from University of Michigan.
- Total investments:
- 20
- Last investment:
- Lead investor:
- 0%
Last updated:
For AI agents: llms.txt
Industries Jeff Lawson invests in
Stages Jeff Lawson invests in
Countries Jeff Lawson invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Seed
- $400k–$35M
- Pre-Seed
- $650k–$2.5M
- Series A
- $6.5M–$37M
Investment Focus
Industry
- Software 10 (50%)
- Artificial Intelligence 6 (30%)
- SaaS 4 (20%)
- Internet 4 (20%)
- Developer Tools 4 (20%)
Stage
- Seed 6 (30%)
- Series A 6 (30%)
- Pre-Seed 2 (10%)
- Series B 2 (10%)
- Series C 2 (10%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Bland AI provides a voice AI platform that enables organizations to build, deploy, and manage automated phone agents for inbound and outbound conversations. The platform supports voice calls, SMS, web chat, and messaging channels while maintaining shared context across customer interactions. It includes tools for conversation design, workflowtesting, call monitoring, integrations with CRM, scheduling, and telephony systems, as well as APIs for custom development. Bland AI also offers voice cloning, multilingual communication capabilities, security controls, compliance-focused features, and deployment options designed for industries that handle regulated customer communications. | $50M / Series C / Jun 16, 2026 | ||
| Arcjet helps developers protect their apps in just a few lines of code. Implement rate limiting, bot protection, email validation, and defense against common attacks. | $8.5M / Series A / Oct 08, 2025 | ||
| Julius AI develops a platform that analyzes data with computational AI. It enables users to analyze datasets, create visualizations, solve math, and much more. | $10M / Seed / Jul 28, 2025 | ||
| Pegasi helps enterprises deploy self-improving AI agents with confidence. Simulate and steer agents with a single API, test their behavior in realistic environments before deployment, and enforce runtime controls with agentic interventions. Trusted by Fortune 500s and part of Snowflake Startup Accelerator (Nov '25). Backed by our researchaccepted at NeurIPS and ICML 2025, Pegasi enables teams to simulate, score, and steer production-ready agents in just three lines of code.We guide the flight path. You reach new heights. | $2.5M / Pre-Seed / Dec 15, 2024 | ||
| Socket is a new security company that can protect your most critical apps from supply chain attacks. We are taking an entirely new approach to one of the hardest problems in security in a stagnant part of the industry that has historically been obsessed with just reporting on known vulnerabilities.Socket is built by a team of open sourcemaintainers with over 1 billion monthly downloads. Everyone on the Socket team is an open source maintainer. We are all driven to defend the open source ecosystem from supply chain attacks and make it safe for everyone.Socket is unique because, unlike other tools, it detects and blocks supply chain attacks before they strike, mitigating the worst consequences. | $40M / Series B / Oct 22, 2024 | ||
| Resolve AI is a firm dedicated on automating software processes. The company creates AI solutions that can automatically troubleshoot and resolve manufacturing challenges. | $35M / Seed / Oct 01, 2024 | ||
| Bland AI provides a voice AI platform that enables organizations to build, deploy, and manage automated phone agents for inbound and outbound conversations. The platform supports voice calls, SMS, web chat, and messaging channels while maintaining shared context across customer interactions. It includes tools for conversation design, workflowtesting, call monitoring, integrations with CRM, scheduling, and telephony systems, as well as APIs for custom development. Bland AI also offers voice cloning, multilingual communication capabilities, security controls, compliance-focused features, and deployment options designed for industries that handle regulated customer communications. | $16M / Series A / Aug 28, 2024 | ||
| MaintainX is a software company that provides maintenance and asset management tools for industrial and frontline operations. Its platform helps organizations manage work orders, preventive maintenance, inspections, reporting, asset tracking, and parts inventory through a centralized digital system. The company integrates AI-powered features thatassist teams with troubleshooting, data collection, operational analysis, and predictive maintenance workflows. MaintainX is used across industries such as manufacturing, facilities management, food and beverage, retail, and distribution to improve equipment uptime and streamline maintenance processes. The platform also supports compliance and safety procedures by digitizing workflows and standardizing maintenance operations across multiple sites. | $50M / Series C / Dec 06, 2023 | ||
| Superblocks provides a platform for building internal enterprise applications, enabling development teams to create tools, workflows, and scheduled jobs using a combination of visual components and code. The platform includes a drag-and-drop UI editor, a component library, and integration with databases and APIs to streamline development processes.Superblocks allows users to automate business logic through scheduled tasks and workflow execution. The service supports secure access management, audit logging, and version control to align with enterprise security and compliance requirements. It also offers extensibility through custom code, giving teams flexibility in application behavior and design. Superblocks is designed to simplify the development and maintenance of internal tools used across business functions. | $37M / Series A / Aug 11, 2022 | ||
| Courier offers an API that lets developers intelligently route user notifications across their existing channels – like SendGrid, Twilio, Slack, and Facebook Messenger – using factors like "is the user online?" and "which channel has produced the most engagement for this user previously?" | $35M / Series B / Jun 22, 2022 | ||
| See all 20 investments → | |||
Co-Investors
About Twilio
Twilio is a developer platform for communications and is reinventing telecom by merging the worlds of cloud computing, web services, and telecommunications. With Twilio, developers, and businesses make communications more contextual by embedding voice, video, messaging, and authentication directly into applications.
Twilio Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Andy O'Dower
Head of Product, Programmable Voice
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Luis Lopez
Principal Real Time Communications Strategist - WebRTC
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Umair Akeel
Product Architect
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Will Mason
Senior Technical Lead for Edge
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Aidan Viggiano
Chief Financial Officer
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FAQ
What does Jeff Lawson invest in?
Jeff Lawson invests primarily in Software, Artificial Intelligence and SaaS startups, most often at Seed and Series A stage. Most of the 20 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Jeff Lawson's check size?
Jeff Lawson typically joins rounds of $400k–$35M at Seed, $650k–$2.5M at Pre-Seed and $6.5M–$37M at Series A. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Jeff Lawson participates in.
How do I contact Jeff Lawson?
Public channels for Jeff Lawson include LinkedIn, X (Twitter) and Facebook. 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 Jeff Lawson last invest?
The most recent investment recorded for Jeff Lawson closed in Jun 2026. Shizune tracks 20 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 Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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