Senior AI Software Engineer - Scalable Agent Platform

Justworks, Inc. is seeking a Senior Software Engineer to join a small, autonomous team building AI-native systems that scale operations. You will own large sections of the technology stack, drive pragmatic decisions in evolving space, and ship production-ready systems relied on daily.

You will contribute to agent design, backend architecture, and knowledge infrastructure while mentoring peers. The role blends hands-on development with strategic product thinking in a fast-paced, early-stage