Best Startups Founding Engineer Jobs in San Francisco, United States

About This RoleWe’re looking for a self-starter who loves building new products in an iterative, fast-moving environment. As a Founding AI Engineer, you’ll report directly to the cofounders and work c...

What we're looking for?We are seeking a scrappy and product-minded Fullstack/AI Engineer, who is passionate about building AI systems for the real world. You should be comfortable working in an ambigu...

ABM, a leading provider of integrated facility solutions, is looking for a Journeyman Building Engineer.The Journeyman Building Engineer supports the designated leadership with the daily operations of...

The Role Shape the agentic integrations platform.Own projects end-to-end. Build the core of an agentic integrations platform: mapping, testing, retries, queues, observability, and more. Work across th...

tl;dr Employee #1. A 1-of-1 role alongsidea Thiel Fellow founder. The world is trending toward fewer, shallower friendships. Empathic is creating a great friend for everyone on Earth, by digitizing co...

Kidder Mathews has been a leader in the commercial real estate industry for over 56 years, fostering an innovative and dynamic work culture with more than 100 "best workplace" awards. Now the largest ...

About This RoleClera is a fast-growing AI start-up that is rethinking the way how top talents find their next dream jobs. We are working with some of the leading start-ups like Mintlify, Luminai and W...

The Role Founding AI engineer. Build agents + models.Messy, high-impact problems. Zero to one. Work on problems most people would walk away from. Take ideas from zero to one quickly while thriving in ...

The Role Build product at lightning speed.Own everything from infra to customer success. As a Founding Engineer, you'll be an integral part of the product build-out. Your role will be dynamic — adapti...

The Role High-agency founding engineer.Build core agent infrastructure, scale to Series A. 1+ years shipping to production. First-principles thinker who thrives in ambiguity and wants real ownership. ...

The Role Build Agnes from the ground up — an AISupply Chain Manager for global manufacturing. Agnes decides what to produce, where to make it, and how to move it through factories, warehouses, and cha...

This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers.She will pick the best candidates from Jack's networkThe next step is to speak to Jack.Founding Engineer ...

About This Role The Opportunity 75% of the best candidates never apply to jobs. They're not looking. They're building. We're building AI agents that do the actual work of recruiting: finding passive c...

The Role Help brands understand how LLMstalk about them — and change their minds. Unusual reverse-engineers the sources, implicit biases, and reasoning patterns that guide LLM outputs. An immensely im...

About This RoleYou’ll design, develop, and deliver features, fixes, and improvements for our customers. You’ll collaborate closely with designers, engineers, and partners to architect high-quality sol...