Founder Jobs in United States

Flex is building the AI-native private bank for business owners. We’re re-architecting the entire financial system for entrepreneurs—from the first dollar a business earns to how that value compounds, moves, and is ultimately spent in real life. Banking, credit, payments, personal finance, and finan

Deep Science Ventures is seeking an exceptional formulation chemist to join the team of a new venture at the intersection of crop nutrition and weed control. This is a deeply hands-on role: You will take ownership of a critical part of the technology, developing the formulation and coating system re

Nango (YC W23) lets developers build product integrations with AI. It gives agents and applications access to the APIs their users rely on. More than 700 paying customers use Nango today, including ServiceNow, Monday, Replit, Ramp. We are a YC-backed team of 14 from AWS, GitHub, Okta, Snyk, Netlify,

About Eventual Eventual is a well-funded, seed-stage fintech startup on a mission to improve American housing unaffordability. We're starting with a narrow but high-impact niche: insurance. With insurance prices up dramatically over the last five years, home insurance represents a new corner of hous

Join Us in Building the Future of Digital Work At Sola, we’re transforming the way work is done. We’re developing AI agents that make powerful automation effortless, enabling any user to record a workflow and instantly scale it up to millions of executions. Sola today powers enterprise workflows in

Who we are Today, 1 in 5 children in the U.S. has a diagnosable mental health disorder, yet about half who need care never receive it. Handspring is a virtual mental health clinic for children, young adults, and families, and we've set out to rebuild this system from the ground up. We're a team of d

Founding Engineer, Applied Research About Backbone Care should be paid for the moment it’s delivered. At Backbone, we’re making that possible for the first time by building the clinical AI layer for healthcare payments. Today, U.S. healthcare wastes more than $350B yearly on administrative work that

Founder's Associate Location: Downtown San Francisco, in-person 5 days a week Comp: $90-130K cash (incl. variable) plus founding-level equity Risely is building the agentic operating system for universities. We're live at some of the largest universities in the country and growing fast. The role You

Jetty is building the first AI functional health doctor & coach. We're starting with solutions for people living with chronic illness, the hardest use case. Our mission is to help people become their own best advocates by giving them an intelligent partner that evolves with their health journey, hel

Frustrated by how discourse is so broken on social media that it seems to make us dumber instead of smarter? Build the world's first Debate Prediction Game with us. Together we'll make discourse fun and beneficial for millions of people and supercharge the collective intelligence of humans and AIs.

Temelio is a venture-backed startup that is on a mission to supercharge the effectiveness of the non-profit community. We are building an all-in-one customer-first grant management platform that enables non-profit organizations, specifically private foundations, to optimize distributing & managing f

Who We Are Kipsi is a venture-backed bespoke technology platform for accounting firms looking to streamline and automate their client engagements. Our software helps firms of all sizes complete client engagements efficiently and effectively. Kipsi is based in the Bay Area but we are a remote-first c

About BoltWise BoltWise envisions revolutionizing the distribution and supply chain domain, with a special emphasis on the fasteners industry. Every year, the US utilizes over 200 billion fasteners – essential components in manufacturing, aircraft, automobiles, and virtually all modern infrastructur

Founding Engineer You’ll be our second engineer, working directly with Caddy’s founders on core architecture, product direction, and execution. If you’re excited about real-time systems, agentic workflows, and building a product you’ll use every day, you’ll have outsized impact here. You will own la

At Terminal, we're building a cloud-native IDE where engineers work alongside always-on AI software engineers - combining the interactive feel of Cursor with the parallelism of Devin. We are building AI software engineers that are proactive and learn from experience. We are a fully in-person team ba

About Echelon Echelon is the AI operating system for corporate transformation — your agentic command center for running a leaner, faster, and more aligned business. We integrate directly with enterprise systems (HRIS, ERP, CRM, CLM, Email, etc.) to create a live map of people, contracts, and goals —

Founding Engineer Location: Los Angeles (in-office, 5 days/week) Compensation: $225K–$300K base + equity About Gerra We’re deploying AI-powered robots that are transforming how businesses acquire and serve customers. Our robots drive 5x sales increases and 10x reductions in customer acquisition cost

Company Hey 👋, we’re Haz and Wyatt, the founders of Pally, and we’re building at the intersection of AI and human relationships. We believe that while AI will automate a lot of low-level tasks, that this will dramatically increase the value of human connection at the highest level. In a world full o

We’re Nerve, and we’re building the AI “supercomputer coworker” every startup wishes they had. We’ve seen firsthand from our previous jobs (Brex, Coinbase, Box, YC startups) how hard it is to scale a company from a handful of people to hundreds. Our answer? Give every team a ridiculously smart AI th

About 3EX Holdings: At 3EX Holdings, we're dedicated to building and buying B2B service businesses that are not only impactful but also poised for long-term success. Our commitment is towards entities that enrich their customers, teams, and communities, promoting a healthier, more productive world.