Job Description

Founding Full Stack Engineer

Location: San Francisco, CA (In-Person)

Salary: $150K - $220K + 0.50% - 1.50% Equity

About the Opportunity

An early-stage startup is building the only platform for self-improving voice AI agents. After closing a $4.5M seed round, the company has experienced rapid growth, doubling in size within just eight weeks. They are now looking for a Founding Full Stack Engineer to take ownership of core features and play a key role in shaping both the product and company culture.

The Role

As a Founding Full Stack Engineer, you will:

• Own and deliver entire features and projects end-to-end.
• Ship optimizations and refactors to improve system performance.
• Engage directly with customers to understand their needs.
• Build intuitive and delightful user experiences.
• Work within real-time, low-latency constraints to develop high-performance applications.

What We’re Looking For

The ideal candidate should have:

• Experience with TypeScript + Next.js or a similar frontend framework.
• Experience with Python and modern async patterns.
• Strong communication skills and the ability to clearly articulate technical ideas.
• A startup mindset —willing to take ownership, iterate quickly, and adapt to uncertainty.
• A founder’s mentality —new ideas come naturally, and you take initiative to bring them to life.

Qualifications

• Previous experience as a Founding Engineer, Senior Engineer, Staff Engineer, or Principal Engineer .
• 1+ years of experience working at a company with fewer than 100 employees.
• Ability to thrive in a fast-moving, in-person startup environment.

Why Join Us?

• High Impact Role: Shape the future of AI-driven voice agents.
• Fast Growth: Be part of a team that’s rapidly scaling and innovating.
• Equity & Ownership: Significant equity in an early-stage, high-potential startup.
• Collaborative Culture: Join a tight-knit team where your ideas and contributions will directly influence the product and company trajectory.

If you're an ambitious full-stack engineer excited about building cutting-edge AI applications, we’d love to hear from you! Apply today to be part of something groundbreaking.

Encouraging Diverse Applications

We encourage applicants from all backgrounds and experiences, including women, non-binary professionals, underrepresented groups in tech, career changers, and those returning to the workforce.

If you're excited about building the next wave of AI development tools and working in a fast-paced, high-impact environment, we’d love to hear from you!

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