Job Description

We’re an early-stage stealth AI startup founded by MIT engineers—privately funded, technically ambitious, and determined to lead in frontier conversational AI. Our technology is built to directly rival platforms like Character.ai , and we’re looking for a Staff Full-Stack Engineer to help shape our core architecture, scale aggressively, and impact millions of users globally. You’ll join a lean, driven team committed to technical excellence, autonomy, and rapid growth.

You’ll have direct ownership over critical technical decisions, architecture, and implementation. You will rapidly build, iterate, and ship key features, working closely with our founding team to scale a world-class conversational AI product to millions of users. Your responsibilities include:

• Leading architecture and development of scalable, product-ready applications.
• Rapidly prototyping and iterating AI-driven features in close collaboration with ML engineers.
• Owning projects end-to-end, from ideation and implementation to deployment and optimization.
• 5+ years building and deploying scalable full-stack systems.
• Proven ability to operate autonomously in ambiguous, fast-paced startup environments.
• Strong technical decision-making, excellent communication, and a clear sense of ownership.
• Driven by impact, eager to iterate quickly, and comfortable navigating rapidly changing technical requirements.

Why Join Us

• Collaborative, passionate team.
• Fully remote (for now), flexible hours.
• Accelerated path to tech leadership.

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Job function

  Engineering and Information Technology

• Industries

  Technology, Information and Internet

Referrals increase your chances of interviewing at Stealth AI Startup by 2x

Get notified about new Full Stack Engineer jobs in San Francisco Bay Area .

Palo Alto, CA $140,000 - $185,000 2 weeks ago

Software Engineer (L5) - Open Connect Platform

United States $100,000 - $720,000 2 weeks ago

San Francisco, CA
$130,000.00
-
$165,000.00
3 days ago

San Francisco, CA
$140,000.00
-
$220,000.00
5 months ago

San Francisco, CA
$105,000.00
-
$180,000.00
3 weeks ago

Software Engineer, HTML - AI Training (Freelance, Remote)

San Francisco, CA
$40,000.00
-
$100,000.00
2 weeks ago

San Francisco, CA
$175,000.00
-
$250,000.00
1 month ago

San Francisco, CA
$150,000.00
-
$175,000.00
1 month ago

San Francisco, CA
$150,000.00
-
$180,000.00
2 days ago

Oakland, CA
$120,000.00
-
$200,000.00
2 weeks ago

San Francisco, CA $150,000 - $190,000 1 month ago

Palo Alto, CA $105,000 - $145,000 2 weeks ago

Software Engineer - AI Training (Freelance, Remote)

Software Engineer, Node.js - AI Training (Freelance, Remote)

Mountain View, CA $180,000 - $210,000 1 month ago

We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.

Job Tags

Similar Jobs