Demo

Founding Engineer

TechTree
York, NY Full Time
POSTED ON 12/24/2025
AVAILABLE BEFORE 2/26/2026
About The Company

Our client is a YC X25-backed AI startup based in New York. They've grown from $0 to $675K ARR in just a few months and recently raised a $4M seed round led by Sequoi. They are building the AI layer for professional services and software implementation, automating documentation, discovery, and decision-making in a $400B services market.

About The Role

Lead engineering projects in an AI startup, designing enterprise interfaces, developing workflows, and architecting infrastructure. Based in NYC, full-time, in-person role.

As a Founding Engineer, you will own and lead engineering projects across our software offerings. You will work closely with our operations, GTM, and deployed services teams to build state-of-the-art systems that provide value to our customers. We’re looking for people who want to do the most meaningful work of their career—people who are sharp, fast, and relentless. No fluff. Just speed, execution, and a shot to build something generational. This role is based in New York, NY in person 6 days/week.

What You’ll Do

  • Design and implement enterprise-level application interfaces
  • Develop complex performant agentic workflows
  • Architect full-stack infrastructure for high-performance applications
  • Retrieve over large corpora of unstructured enterprise data
  • Evaluate LLMs across various application layer use-cases

Requirements

  • 0-3 years of experience
  • Comfortable working full-time in NYC office
  • Strong communicator and team player
  • Extremely strong builder capability (active GitHub, won Hackathons/built projects)
  • Strong fundamentals in full-stack engineering or AI integration
  • Ability to ship features end-to-end

Required Skills

  • Programming skills
  • Computer science knowledge
  • Proficiency in Python
  • Proficiency in TypeScript
  • Next.js experience
  • Customer obsession
  • Developing highly-intuitive products
  • Strong communication
  • Teamwork
  • Full-stack engineering
  • AI integration

Benefits

  • In-person hacker-house environment with optional coliving
  • High impact, high visibility early engineering role
  • Work directly with Sequoia-backed founders from Meta, Tesla, AWS
  • Get shipped to production early and often
  • YC alumni network and fast-growing ARR trajectory

Team members

  • four founders
  • one full-time engineer
  • two interns

Salary: 172000 - 250000 USD

Salary : $172,000 - $250,000

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