# Senior Full Stack Engineer (Back-End) at Wordware

- Company: Wordware (YC S24)
- What the company does: AI agents you can rely on. Backed by Y Combinator and Felicis.
- Company website: https://wordware.ai/
- Type: Startups (AI role)
- Level: Senior
- Location: San Francisco
- Work setup: On-site
- Pay: $180K to $240K base salary per year (USD)
- Posted: 2026-07-21
- Apply by: 2026-10-08
- Apply: https://www.ycombinator.com/companies/wordware/jobs/q25ojiS-senior-full-stack-engineer-back-end
- Page: https://www.1752.vc/careers/jobs/wordware-senior-full-stack-engineer-back-end/

## About the role

You'll write and ship full-stack features end to end, from the agent runtime and backend APIs, to the web and desktop UI that users interact with every day. We're still ~20 people and shipping to our first paying users. You won't just be building features, you'll be making the decisions that determine whether this system holds at 1000x the current load.

## What they're looking for

- You've worked with Cloudflare Workers, Durable Objects, or serverless compute at the edge
- You've built agent systems, model routing layers, or tool-use architectures with LLMs
- You've been a founder or early-stage engineer and care deeply about product

Tags: Engineering