Founding Software Engineer Software company San Francisco, California $180k to $220k USD base a year

raydar; San Francisco (CA); Hybrid; USD 180,000 - 220,000; Full time

Benefits offered by this job

Equity

On-site

Occasional remote days

Job summary

raydar is seeking a Founding Software Engineer in San Francisco to build core product features and AI-enabled components. You will own end-to-end development, from data layer to UI, and shape onboarding while working closely with leadership and users.

You should have 4+ years of software engineering, strong Python and React skills, AWS experience, and a track record with AI-powered systems in production. On-site with occasional remote days in SF.

Qualifications

• 4+ years of professional software engineering experience.
• Proficient in Python and React.
• Experience deploying on AWS.
• Shipped an LLM-powered or agent-style system to production.

Responsibilities

• Deliver new product capabilities from data layer to UI.
• Create and refine AI-powered agent functionality within the product.
• Redesign and own central product areas like onboarding.
• Support customers by email, chat and live calls, troubleshooting issues.
• Help establish how the team plans and ships work.

Skills

Python

React

AWS

LLM-powered systems

Job description

# Founding Software EngineerSoftware company* LocationSan Francisco, California* TypeFull-time* Posted6 October 2026Apply for this roleThe role, as published## About the companyOur client is a software company.## The roleRaydar is recruiting for this role on behalf of our client. Act as an early engineer with broad ownership of a software product, spanning conventional application work and AI-driven components. Partner closely with engineering leadership and with end users to build, rework and improve key areas of the product.## What you'll do* **Deliver new product capabilities** from data layer through server logic to user interface.* **Create and refine AI-powered** agent functionality within the product.* Redesign and take responsibility for central product areas such as user onboarding.* **Support customers by email**, chat and live calls, troubleshooting problems and learning how the product gets used.* Contribute to establishing how the team plans and ships product work.## What we're looking for* At least 4 years of professional software engineering experience.* Strong skills in Python, with solid experience in React and cloud infrastructure on AWS.* Has shipped an LLM-powered or agent-style system to production and can walk through its design, behavior and validation.* Real interest in owning the entire codebase rather than only the AI-focused parts.* Comfort supporting customers directly.* Ability to work on-site in San Francisco, with occasional remote days.* US citizenship is required.## Bonus points* Time spent at an early-stage startup where responsibilities were wide-ranging.* Ability to clearly justify technical decisions on tooling, design and testing.* Background in a compliance-heavy sector.## Location and work model* San Francisco, CA, United States* On-site, with occasional remote days* Full-time## Compensation, as the posting describes it* EquityPay$180k to $220kUSD base a year