Software Engineer, Backend

buildwithfern· Engineering
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📍 New York City or San FranciscoFullTime💰 USD 200K–250K/yr

About this role

About Fern

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.

About the Role

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.

What We’re Looking For

  • 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.

Benefits

  • Prime office location in the heart of Williamsburg, Brooklyn

  • Paid lunch/meals at the office

  • Health, dental, and vision insurance

  • Unlimited vacation

Frequently Asked Questions

What is the salary for the Software Engineer, Backend role at buildwithfern?
The listed salary for this Software Engineer, Backend position at buildwithfern is USD 200K–250K/yr. This is an FullTime role.
Where is the Software Engineer, Backend position at buildwithfern located?
This Software Engineer, Backend role at buildwithfern is based in New York City or San Francisco. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Software Engineer, Backend role at buildwithfern full-time or part-time?
This is listed as a FullTime position. It is posted as a Software Engineer, Backend role in the Engineering department at buildwithfern.
Which team or department does the Software Engineer, Backend at buildwithfern belong to?
This Software Engineer, Backend position is part of the Engineering department at buildwithfern. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Software Engineer, Backend position at buildwithfern?
Click the "Apply Now" button on this page. You will be redirected to buildwithfern's official application portal hosted on ashby where you can submit your application directly.
When was the Software Engineer, Backend job at buildwithfern posted?
This Software Engineer, Backend position at buildwithfern was posted on Dec 11, 2025. Apply as soon as possible — early applications are often reviewed first.
Software Engineer, Backend
buildwithfern · 💰 USD 200K–250K/yr
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You'll be redirected to buildwithfern's official application page on Ashby ATS.