Founding Full-Stack Engineer

Join a pre-seed Applied AI startup in San Francisco as a Founding Full-Stack Engineer, working directly alongside the founders to ship across the entire product. This is a high-ownership, high-impact role at a small team building at the intersection of generative AI, creative intelligence, and social media - with ambitions to reach hundreds of millions of users.

You’ll touch everything: web, mobile, backend, infrastructure, AI integrations, and video processing pipelines. If you thrive in fast-moving, founder-led environments and want your work to matter from day one, this role is for you.

What You’ll Do

• Build across the full product surface: web app (Next.js), mobile app (React Native), admin tools, pricing flows, and dashboards.
• Ship real features fast - multi-agent orchestration, FFmpeg video stitching, Remotion pipelines, and LLM/VLM integrations.
• Architect systems designed to scale to one million users per day.
• Collaborate directly with founders on product decisions, UX flows, and technical direction.
• Dive into whatever moves the product forward - UI, backend, infra, orchestration, computer vision, ML, or DevOps.
• Own problems end-to-end without waiting for permission or detailed instructions.

Required (dealbreakers):

• Strong proficiency with Next.js and React Native for building web and mobile interfaces.
• Hands-on, end-to-end full-stack experience across UI, backend, and infrastructure.

Strongly preferred:

• Experience integrating and deploying AI systems, including large language models (LLMs) and vision language models (VLMs).
• Practical experience with video processing and media pipelines using FFmpeg and Remotion.
• 1-3 years of relevant experience in a fast-paced, multi-disciplinary environment.
• Ownership mindset - you ship fast, communicate clearly, and flag issues early rather than going quiet.
• Experience building consumer-facing applications at high user volumes.

• Salary: Up to $300,000 USD annually (commensurate with experience).
• Early-stage equity in a pre-seed company with strong investor backing.
• Visa sponsorship: Not available.