Senior Full-Stack Engineer with Equity Options

Moss (YC F25); San Francisco (CA); On-site; USD 140,000 - 180,000; Full time

Benefits offered by this job

Equity: Meaningful stock options

Job summary

A leading AI startup in San Francisco is looking for a Senior Full-Stack Engineer with over 6 years of experience. You will architect core systems, build complex infrastructure, and optimize performance in a high-trust collaborative environment. The role requires strong capabilities in TypeScript, React, and backend service design. You will work closely with the founding team to shape the future of conversational AI. The company offers meaningful equity options and encourages ownership and initiative.

Qualifications

• 6+ years building and shipping production software in a product-focused environment.
• Strong expertise in TypeScript and modern front-end frameworks.
• Experience designing and owning backend services.

Responsibilities

• Architect and build core services that power Moss at scale.
• Own end-to-end product surfaces: APIs, dashboards, and tooling.
• Optimize Moss for latency, resource efficiency, and reliability.

Skills

TypeScript

React

Next.js

Node.js

Rust

Go

AWS

Azure

GCP

Job description

A leading AI startup in San Francisco is looking for a Senior Full-Stack Engineer with over 6 years of experience. You will architect core systems, build complex infrastructure, and optimize performance in a high-trust collaborative environment. The role requires strong capabilities in TypeScript, React, and backend service design. You will work closely with the founding team to shape the future of conversational AI. The company offers meaningful equity options and encourages ownership and initiative.