Fullstack Engineer

San Francisco, CA

Founding Fullstack Engineer (Frontend-Focused)

📍 San Francisco | Full-Time | On-Site

We’re looking for a founding engineer to shape the very first version of a next-generation social marketplace for AI products. You’ll have the chance to architect and own the core experience—how users discover, test, and evaluate AI tools—while working side-by-side with the founding team.

What You’ll Do

  • Design and deliver a polished, scalable frontend experience used daily by developers, PMs, and executives in the AI space.

  • Architect and implement interactive testing environments where AI products can be compared in real time.

  • Blend social and marketplace elements into a seamless, engaging product experience.

  • Establish the design system that will serve as the foundation for scaling to hundreds of thousands of future AI products.

  • Collaborate closely with product and leadership to translate loose ideas into high-quality, production-ready features.

What We’re Looking For

  • 2–5 years of experience in fullstack or frontend-heavy engineering roles, ideally in fast-paced startup environments.

  • Deep proficiency in React Native (Expo, navigation frameworks, modern state management).

  • Strong grasp of modern styling systems like Tailwind, Tamagui, or similar, with an eye for pixel-perfect UI.

  • Comfort with profiling and performance optimization for a smooth UX on both mobile and web.

  • Track record of taking ownership from concept through launch.

  • Bonus: prior founder or founding engineer experience, or open-source contributions in the React Native ecosystem.

Why This Role Matters

This is not just about building features—it’s about defining the core experience of a new category . You’ll have deep influence on technical decisions, product direction, and user experience, while working on challenges like:

  • Modeling complex social dynamics in a digital environment.

  • Designing intuitive workflows for comparing and evaluating AI products.

  • Building infrastructure that can handle real-time interactions at scale.

If you’re excited to build something from the ground up, own the frontend vision, and see your work shape the way people adopt and trust AI products, this is your chance.

Posted 2025-09-10

Recommended Jobs

RESTAURANT BUSSER PT

Springboard Hospitality
Venice, CA

RESTAURANT BUSSER PT Location Venice, CA : About our company: Springboard Hospitality is a premier third-party hotel management company with a 30+ year history transforming lifestyle hotels, from th…

View Details
Posted 2025-09-06

Research Engineer

OpenAI
San Francisco, CA

By applying to this role, you will be considered for Research Engineer roles across all teams at OpenAI. About the Role As a Research Engineer here, you will be responsible for building AI syst…

View Details
Posted 2025-09-10

Arby's Team Member

KBP Inspired
Vista, CA

Looking to kickstart your career? At our KBP Inspired franchise location, we’re on the lookout for individuals like you to become part of our Arby’s team. If you’re motivated, a team player, and exci…

View Details
Posted 2025-08-29

Staff Software Engineer, AI/Machine Learning

Murata America
San Diego, CA

pSemi Corporation is a Murata company driving semiconductor integration. pSemi builds on Peregrine Semiconductor’s 30-year legacy of technology advancements and strong IP portfolio but with a new mis…

View Details
Posted 2025-09-10

Entry Level Event Promotions Assistant

PESG Inc.
Fresno, CA

Full-Time | Entry-Level | Immediate Openings | Weekly Pay Are you energetic, outgoing, and ready to launch your career in event marketing and brand promotions ? We're hiring Entry-Level Event …

View Details
Posted 2025-09-10

Infant Teacher

San Jose Day Nursery
San Jose, CA

Job Description Job Description We are hiring a Full Time (40 hours per week) Infant Teacher Our teaching staff are responsible for: Maintaining a healthy, safe environment both indoors and…

View Details
Posted 2025-07-29

Front-End Developer

Moss Bros. Auto Group
Moreno Valley, CA

With 100 years of experience, our commitment to our employees and our customers is strong. See why we are one of the largest, locally-owned auto groups in Southern California. Using a "hands-on" appro…

View Details
Posted 2025-09-11

Senior Research Associate/Associate Scientist, Antibody Screening and Display

CEDENT
Berkeley, CA

Client uses a combination of novel, cutting edge methods in machine learning, biology at scale and next gen antibody discovery that address key bottlenecks in the drug development pipeline. To accompl…

View Details
Posted 2025-07-31

Cook

HOT GAI LLC
San Francisco, CA

We are looking for a reliable and skilled Cook to join our kitchen team. The Cook will be responsible for preparing menu items to specification, maintaining a clean and organized workstation, and ens…

View Details
Posted 2025-09-02

PATIENT DINING ASSOCIATE (DIETARY AIDE) (PART TIME)

Compass Group
Sylmar, CA

  We are hiring immediately for part time PATIENT DINING ASSOCIATE (DIETARY AIDE) positions. Location : Olive View Medical Center - 14445 Olive View Drive, Sylmar, CA 91342. Note: online appl…

View Details
Posted 2025-08-29