# Founding Full Stack Engineer

> Raydar · San Francisco, United States · Full-time · Posted 2026-10-12

**Salary:** USD 180,000–230,000

**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. Join a very small engineering group as an early hire, working across the front end, back end and infrastructure of a customer-facing software product. You will ship features, diagnose production issues and help set technical standards for future engineers. Expect broad ownership with little prescribed structure.

What you'll do

\- Build and ship features across the full stack, from user interface to backend services.

\- Develop and refine systems built on large language models, including conversation flow, tool use and voice.

\- Prototype adaptive interface components and turn ideas into working demos quickly.

\- Build and maintain an evaluation pipeline that measures output quality and catches regressions.

\- Investigate production issues by reviewing logs, tracing root causes, rolling back changes and adding tests.

\- Design infrastructure for versioning and safe previewing of changes before release.

\- Create low-latency, reliable infrastructure so users get instant responses.

\- Take on whatever work is needed, including UI fixes, data migration scripts and customer issue debugging.

\- Help establish engineering culture and practices as the team grows.

## Requirements

What we're looking for

\- Prior full stack engineering work at a growing software startup that has paying users.

\- A track record of designing polished interfaces and shipping product features that users directly interact with.

\- Working proficiency in React and Python.

\- Hands-on delivery of AI-powered features in production, such as LLM-driven assistants, retrieval pipelines or orchestration layers.

\- A bachelor's degree in computer science.

\- Comfort with ambiguity and a strong sense of ownership.

\- Good product instincts and enthusiasm for turning user feedback into code.

\- Sound judgment about when work is ready to ship, and the ability to move quickly without creating hidden problems.

\- Experience running systems that real users depend on, and an understanding of how they fail.

\- Interest in closing the gap between a demo and a reliable production system through evaluation and iteration.

Bonus points

\- Experience at a sales technology startup.

## Benefits

Compensation and benefits

\- Base salary: USD 180,000 to 230,000 per year

\- Equity

Location and work model

\- San Francisco, CA, United States

\- On-site, 5 days per week in office

\- Full-time

## Apply

[Apply at Raydar](https://apply.workable.com/raydar/j/6943CF3D72/apply)

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