Fern
Input OpenAPI. Output SDKs and API documentation.
AI Engineer
About the role
As a small team, we’re all generalists, constantly pick up new challenges, and interface with customers regularly. Regarding product and code, we’re looking to work with experienced people who can pick a problem and solve it. We don’t expect you to have a background in all the tools we use, but we expect you to dig in and learn quickly.
What you’ll do
- Launch and scale AI chat in docs. We built a prototype of AI chat with docs and rolled it out in our docs (see it in the search bar of buildwithfern.com/learn). Now our customers are asking for it, and feedback is rolling in. We need your help to iterate and launch the feature so 10,000s of developers can benefit.
- Build to emerging standards. At Fern, we believe in staying ahead of the curve and act as early adopters. We launched
/llms.txtto abide by a new standard for how LLMs and Agents interact with developer documentation. The response exceeded our expectations, with ideas ranging from auto-generating Cursor rules to optimizing this feature for token efficiency. These are still the early days—our team is exploring, iterating, and talking to our 100s of customers about what they want next. - Bring talent to our team. We’re expanding, and you will work directly with the CEO and CTO to bring in talented AI engineers to collaborate with.
What you’ll bring
- 3+ years of professional backend or full-stack development
- Experience developing, deploying, and monitoring an AI product or feature in production
- You are a former or future founder
- (Nice to have) You've worked in a high-growth SaaS company
What we offer
- Ownership of projects end-to-end while wearing multiple hats
- 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
- Phone Screen with a founder
- Technical Interview: Coding
- Technical Interview: Decomp (System Design)
- Work Trial (in office)
- 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 10 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.
