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Founding Software Engineer

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Simple AI

B2B

Founding Software Engineer

San Francisco
On-site
Full-time
Posted Oct 8, 2025
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Engineering
On-site
About Simple

Simple AI is building state of the art voice AI agents for enterprise. Our realistic agents help iconic businesses like Doordash, xAI, and Omaha Steaks handle all kinds of phone operations, from customer support to order intake to lead qualifications. We are growing revenue like crazy and looking to hire a couple founding software engineers to help us stay afloat of current customer demand and also build out systems for the future. We are very excited about the potential for AI to change the world, and work out of our SF based office 5 days a week.

Simple AI is backed by world-class investors and operators like Y Combinator, Massive Tech Ventures, Michael Seibel (co-founder of Twitch), Jared Friedman (Scribd), Alexandr Wang (Scale AI), Matt Van Horn (June Oven and Lyft), Suhail Doshi (Mixpanel), JJ Fliegelman (WayUp) and Scott Wu (Cognition).

The Team

The founders (Catheryn and Zach) met while running software teams at YC, where they shipped tons of new products for YC founders, including YC’s co-founder matching site. Cat previously worked at Instagram and Facebook and earned degrees in math and computer science at MIT. Zach previously studied computer science and statistics at U Chicago and led software at PEAK6.

What We Offer
  • Competitive salary & meaningful equity

  • Employee-friendly equity terms

  • An office located in SF

  • Health, dental & vision insurance

  • Free lunch & dinner at the office

  • Free Ubers home after 8:30pm

  • Regular team events & offsites

What You'll Need
  • 4+ years of relevant work experience.

  • Strong problem-solving skills and enthusiasm for addressing technical challenges.

  • A customer-first mindset with strong communication skills and interest in product design and prioritization.

  • Self-motivated and able to work independently.

  • Passion about learning and keeping up with latest AI advancements.

Nice To Have
  • Previous experience with prompt engineering or working with AI/LLM-based platforms.

  • Experience as an early-stage startup engineer or founder.

  • Experience with TypeScript, React, Python, Ruby on Rails, PostgreSQL, AWS.

Fun fact: every engineer on our team has founded a company!

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Simple AI logo

Simple AI

Company profile

AI phone agents for enterprise

View Simple AI

Headquarters

San Francisco, CA, USA

Team size

1-10

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