Founding Engineer

Open Posted on May 13, 2026

At a glance

Pay
$100k – $200k/yr
Type
Full Time
Location
San Francisco, California
Posted
May 13, 2026
Company size
Startup (1-50)
Industry
Technology/Software

About the role

As a founding member of our engineering team, you’ll play a pivotal role in building the data and evaluation infrastructure that powers frontier models. Joining as one of our earliest hires, you’ll take on significant ownership - leading projects from start to finish and seeing direct and immediate impact of your work.

Company Overview

We're a YC-backed startup on a mission to bridge the gap between AI and the $5T knowledge work economy through cutting-edge data infrastructure and environments. We're a technical team with experience from Scale AI, Uber, and previously founding a successful AI company. We’re based in San Francisco, CA, and recently raised an oversubscribed seed round led by top-tier VCs.

Required Qualifications

  • Strong technical / computer science fundamentals.
  • Experience building production-grade backend / full-stack systems
  • Deep understanding of scalability challenges and good system design.
  • The ability to take ambiguous requirements, conduct research, analyze tradeoffs, and own project execution end-to-end, balancing speed vs reliability.
  • Strong communication skills and a bias toward ownership

Preferred Qualifications

  • 1+ years of experience as a SWE
  • Prior experience at startups / high-growth companies
  • Experience with applied AI / AI research - specifically in post-training / RL

About MangoDesk

MangoDesk
Technology/Software · Startup (1-50)
YC Backed

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