Senior Software Engineer - Fern

Postman•New York, NY

36d•$200,000 - $250,000•Onsite

About The Position

Fern, a Postman company, helps software companies build API experiences. As a Senior Software Engineer, you will build APIs, scale AI infrastructure, and design developer experiences. You will work on AI systems deployed on Vercel, AWS, and Turbopuffer, ensuring they remain performant, reliable, and secure under real-world load. You will work directly with API teams at customers including Nvidia, Twilio, and Square to investigate production edge cases, shape APIs based on customer feedback, and ship improvements quickly. You will also collaborate with product designers and frontend engineers using TypeScript and Next.js to define polished interfaces and user experiences. Fern describes its team as small and talent-dense, with team members from Google, Palantir, Amazon, and Uber, working together in New York City. Postman emphasizes in-person collaboration at its hubs. The role’s stated base salary range is $200,000 to $250,000, plus a competitive equity package; actual compensation depends on skills, qualifications, and experience.

Requirements

At least 5 years of professional software engineering experience.
Strong written and verbal communication skills for solving technical problems with customers.
A strong sense of developer experience as a craft; the company is building open source.

Nice To Haves

Experience building with TypeScript.

Responsibilities

Build APIs, scale AI infrastructure, and design developer experiences.
Scale AI systems deployed on Vercel, AWS, and Turbopuffer to be performant, reliable, and secure under real-world load.
Work directly with customer API teams to debug production edge cases.
Shape APIs based on customer feedback and ship improvements quickly.
Collaborate with product designers and frontend engineers using TypeScript and Next.js to define polished interfaces and user experiences.