Fern

Input OpenAPI. Output SDKs and API documentation.

AI Engineer

$170K - $210K
Location
New York, NY, US
Job Type
Full-time
Experience
3+ years
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Danny Sheridan
Danny Sheridan
Founder

About the role

This role is ideal for ambitious engineers with entrepreneurial goals. Many of us are former or future founders, and this is an opportunity to scale a company from $1M to $10M ARR while partnering with fast-growing tech companies shaping the future of software. We value in-person collaboration and work out of our office in the Williamsburg neighborhood of Brooklyn.

Sound like you? Get in touch.

What you’ll do

  • Launch and scale AI chat in docs. We’ve built a prototype for AI chat in our docs—check it out in the search bar at buildwithfern.com/learn). Customer demand is growing, and feedback is rolling in. You’ll help us refine, iterate, and fully launch this feature so tens of thousands of developers can benefit.
  • Build to emerging standards. We launched /llms.txt to support a new standard for how LLMs and agents interact with developer docs, receiving incredible feedback and ideas—from auto-generating Cursor rules to optimizing for token efficiency. You’ll play a key role in shaping and iterating on these early innovations based on input from our customers like ElevenLabs, Cohere, Vapi, Pinecone, and more.
  • Instrument and analyze performance. As we develop AI tools, you’ll design evaluation systems, monitor performance metrics, and troubleshoot issues as they arise. You’ll implement tracking and analytics to understand how features are used and ensure they deliver meaningful value to developers. Additionally, you’ll integrate usage and billing systems, ensuring alignment between feature adoption and transparent, scalable pricing for our customers.
  • Bring talent to our team. As we scale, you’ll work closely with our CEO and CTO to attract and hire talented engineers.

What you’ll bring

  • 2+ years of professional software engineering development
  • Experience developing, deploying, and monitoring an AI product or feature
  • (Bonus) You've worked in a high-growth SaaS company
  • (Bonus) Experience working with the OpenAPI specification, Conjure (Palantir), or Smithy (AWS)

What we offer

  • First-hand experience building an early-stage startup
  • A salary of $170,000 to $210,000 and equity
  • Living proximity bonus of $18,000 per year if you choose to live near the office
  • Meals (breakfast, lunch, and dinner) at the office
  • Health, dental, and vision insurance
  • Unlimited vacation

Our tech stack

  • Anthropic, Amazon Bedrock & AI SDK (LLMs)
  • Algolia & turbopuffer (Search)
  • Fern (API)
  • Microservices: Express (NodeJs), FastAPI (Python)
  • AWS (Cloud)
  • NextJS + Vercel (Frontend)

About the interview

  1. Phone Screen with a founder
  2. Technical Interview: Coding
  3. Technical Interview: Decomp (System Design)
  4. Work Trial (in office)
  5. Offer!

About Fern

APIs underpin the internet but are still painful to work with. They are often untyped, unstandardized, and out-of-sync across multiple sources of truth.

Fern enables businesses to offer “Stripe-level” SDKs (client libraries) and Docs for their REST API. Inspired by internal tooling we saw at AWS and Palantir, we’re building Fern to let every engineering team offer easy-to-use and well-documented APIs.

Founded in 2022, we’re less than 20 people, building open source, and backed by YCombinator. We work together in our office in the Williamsburg neighborhood of Brooklyn, NY. Our customers include Cohere, ElevenLabs, Webflow, and Merge.dev.

Fern
Founded:2022
Team Size:12
Location:New York
Founders
Danny Sheridan
Danny Sheridan
Founder
Deep Singhvi
Deep Singhvi
Founder