Staff Engineer, API Core Platform

Job description

Staff Engineer — Product Engineering Core Platform About the role: Together AI is seeking an experienced Staff Engineer to own and evolve the core product runtime that powers our Cloud application surfaces. This role sits at the intersection of infrastructure and application architecture and is responsible for ensuring our systems are stable, scalable, and cleanly structured as we grow. You will lead the technical evolution of our production runtime and application architecture, strengthening the foundation that product engineers build on every day. In the near term, this includes improving the performance, reliability, and structure of our existing Next.js-based application and helping drive the separation of responsibilities across the stack. Over time, you will shape the long-term architecture of the product platform so teams can ship quickly and confidently at production scale. This is a deeply hands-on Staff role for an engineer who has operated real production systems, improved them under pressure, and led structural change. You will be the technical owner of how the product runs in production — ensuring it remains fast, resilient, and easy to evolve as the company scales. Yo...