Fern helps software companies build a world-class API experience. Our customers include industry leaders like Nvidia, Square, and Twilio, as well as fast-growing AI companies like ElevenLabs and OpenRouter.
In the next year, the majority of API integrations will be implemented by AI agents. Agents don’t read marketing pages. They need strongly typed schemas, structured endpoints, deterministic contracts, and documentation that can be fed into a context window.
Our team is small and talent-dense. We’re a team of builders from Google, Palantir, Amazon, and Uber, working together in Williamsburg, Brooklyn. We were acquired by Postman — giving us access to 40 million users and 98% of the Fortune 500 — while maintaining the independence, speed, and ownership of a startup.
As a Software Engineer, Backend at Fern, you’ll build APIs, scale AI infrastructure, and design developer experiences that reach millions of people.
Scale infrastructure to keep up with growth: Work on AI systems deployed on Vercel, AWS, and Turbopuffer that must be performant, reliable, and secure under real-world load.
Stay close to customers: We work directly with API teams at companies like Nvidia, Twilio, and Square. You’ll debug real production edge cases, shape APIs based on customer feedback, and ship improvements quickly.
Collaborate across the stack: Partner closely with product designers and frontend engineers working in TypeScript and Next.js to define polished interfaces and slick user experiences.
You have 3+ years of professional software engineering experience.
We’re building open source and we care deeply about taste — we’re looking for builders that know developer experience is a craft.
Strong written and verbal communication skills to solve technical problems with customers.
Bonus: Experience building with TypeScript.
Prime office location in the heart of Williamsburg, Brooklyn
Paid lunch/meals at the office
Health, dental, and vision insurance
Unlimited vacation
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