# Senior Full Stack Engineer

> Raydar · San Francisco, United States · Full-time · Posted 2026-10-15

**Salary:** USD 225,000–275,000

**Workplace:** on_site

## Description

About the company

Our client is a fast-growing software company.

The role

Raydar is recruiting for this role on behalf of our client. Act as a hands-on senior engineer who owns the customer-facing side of a web application, carrying features from first prototype through release with care for polish and speed. Work side by side with leadership and cross-functional colleagues while raising the bar for code quality and coaching other engineers.

What you'll do

\- Design and build full-stack features, including refined user interfaces, dependable APIs and scalable backend services.

\- Take product features from early prototype to launch, paying close attention to responsiveness, usability and visual finish.

\- Collaborate with product, sales, marketing and leadership to connect third-party generative AI models through their APIs and open up new use cases.

\- Translate design mockups into polished, production-ready interfaces.

\- Lead large product initiatives from concept to release, including upcoming launches.

\- Define coding conventions and quality practices for the team, and coach colleagues through your own example.

## Requirements

What we're looking for

\- 5 to 10 years of professional experience delivering full-stack web products.

\- Industry experience with TypeScript and AWS, including React front ends and Node.js back ends.

\- Background building full-stack systems that scale, such as data-heavy processing, search and retrieval, or background job workflows.

\- At least 12 months of professional experience building LLM-based or agent-based products at a startup or AI-focused company; personal projects do not count.

\- Startup experience; a career spent only at large technology companies is not a fit.

\- A portfolio of shipped interfaces or products that demonstrates strong product sense and visual taste.

\- Solid computer science fundamentals, including system design, algorithms and application architecture.

\- A formal computer science or engineering degree.

\- Fluent English for reading, writing and speaking.

\- A record as a hands-on technical lead who raises standards and helps mid-level engineers grow.

\- Ability to work on-site five days a week in a fast-paced startup and start in the office right away.

Bonus points

\- Familiarity with working on media or video technology.

\- Experience with consumer-facing generative AI products.

## Benefits

Compensation and benefits

\- Base salary: USD 225,000 to 275,000 per year

\- Equity

\- Health, dental and vision coverage

Location and work model

\- San Francisco, CA, United States

\- On-site, 5 days a week in the office

\- Full-time

## Apply

[Apply at Raydar](https://apply.workable.com/raydar/j/2983488CA6/apply)

---
Powered by [Workable](https://www.workable.com)