Senior Fullstack Engineer

Senior Full-stack Engineer

San Francisco | Full-time, On-site | $180K $230K + Equity

About the Role

This is a rare opportunity to join an early-stage team building foundational systems in AI-driven products. You'll work side-by-side with the founders, own critical architecture and product decisions from day one, and directly shape the customer experience.

If you thrive in environments where ambiguity is the norm, speed matters, and getting things done trumps everything else, this role is for you.

What You'll Do

Scale architecture : Design and optimize systems to handle rapid user and traffic growth while maintaining real-time performance.

Automate AI workflows : Build and own tooling for evaluating and retraining AI models in production, ensuring they improve continuously.

Own the product : Work directly with customers, define problems, design solutions, ship code, and iterate quickly.

Full-stack execution : Develop across the stack (frontend, backend, integrations) to get users live and delighted.

Build integrations : Create rich, bidirectional features with tools like Slack and Teams to embed the product where customers already work.

Who You Are

58 years of full-time full-stack engineering experience, ideally at YC-backed or top-tier startups.

Experience in agentic product development and shipping products with real users and revenue.

A background that blends big tech stability with early-stage startup scrappiness .

Experience as a technical PM turned SWE is a strong plus.

Strong CS or engineering degree .

Full-stack capabilities with high proficiency in TypeScript and React .

Strong intuition on when and how to use AI , with experience leveraging it to accelerate workflows.

Soft Skills & Mindset

Mission-driven : Deeply interested in and aligned with the company's mission.

Scrappy builder : Assemble resources to move faster without compromising quality.

Customer-obsessed : Comfortable speaking with users directly to shape product direction.

High-agency : Self-directed problem solver who thrives in ambiguous, fast-changing environments.

Whats Offered

Competitive compensation : $180K $230K base salary

Equity : 0.7 2.0%

Visa sponsorship available (TN-1, H1B transfers)

Health, dental, and vision  are fully covered

High trust, high ownership environment, micromanagement

A real shot at something big : Help define the future of AI-powered products