Backend Engineer

Senior Full-Stack Engineer

San Francisco, CA

Onsite -w2/full time (no-sponsorship)

$190,000 - $220,000

We are hiring a Senior Full-Stack Engineer (backend-leaning) to join our client in person in SF.

building a personal AI assistant for knowledge workers — something closer to “Cursor for knowledge work” than a chatbot.

You will:

• Own features from conception → architecture → implementation → shipping → iteration

• Handle backend-heavy work with some infrastructure/DevOps responsibility

• Implement basic frontend functionality when needed

• Work directly with users (engineers onboard users themselves)

• Translate user feedback into experiments and shipped improvements

• Operate in an ambiguity-tolerant, fast-moving environment

• This is not a ticket-taking role. Feature requests are assigned to individuals, and you own them fully.

Tech Stack

TypeScript

React

Next.js

Node.js

PostgreSQL

Cloudflare

AWS + additional infrastructure providers

AI model integrations (multiple providers)

You must:

• Understand AI applications and agentic workflows

• Have experience with agent loops and model interaction patterns

• Be able to ramp quickly on AI-heavy systems

• You do not need deep ML engineering expertise — but you cannot be starting from zero.

• In-person only (San Francisco office)

• Must be US-based or willing to relocate