Software Engineer, Ruby

About Fern :

At Fern, we believe every software company should offer a world-class API. We're building the toolkit to make that possible. We enable customers like Square, ElevenLabs, Webflow, and Intercom to offer a best-in-class developer (DX) and agent experiences (AX).

Our team is primarily ex-Palantir and ex-founders, working together from our office in Williamsburg, Brooklyn. We give builders the autonomy to take ownership, the speed to move quickly, and the support to do the best work of their careers. Fern is growing more than 5x year-over-year, is at the Series A stage, and has raised over $10M from Bessemer and Y Combinator.

Why you should work here :

• Experience a hyper-growth startup : Join a top-decile growth company early. You'll get firsthand exposure to how a startup scales with visibility into product, engineering, design, and go-to-market. Thinking of founding a startup someday? This is the place to learn.
• High trust and autonomy : You'll have ownership over meaningful projects from day one, with the freedom to shape technical decisions and influence product direction. We trust engineers to figure out the best path forward-without micromanagement.
• We move quick : Your code will ship quickly and be used by our customers within days (and sometimes hours). We prioritize shipping fast, and invest in the developer experience toolchain to make that possible.
• Few meetings and bureaucracy : No bloated sprint rituals or unnecessary status updates. Just clear priorities, thoughtful async communication, and space to build.
• Palantir-inspired customer obsession : Many of our engineers come from Palantir and bring the same focus on solving real customer problems. You'll work directly with users to tackle their top developer priorities and shape the product through hands-on feedback.

What you'll do :

As a Ruby SDK Engineer at Fern, you'll define what great looks like for modern Ruby SDKs-making them idiomatic, reliable, and delightful to use. You'll own parts of our open source compiler, shaping the core abstractions behind all generated SDKs. You'll also stay deeply connected to the Ruby community, evolving the SDK based on real-world developer feedback and emerging best practices.

What we're looking for :

What we're looking for - Bonus :

Benefits :

About the interview :