About AssemblyAI

At AssemblyAI, we’re building at the forefront of Speech AI, creating powerful models for speech‑to‑text and speech understanding available through a straightforward API. With more than 200,000 developers building on our API and over 5,000 paying customers, AssemblyAI is helping unlock and support the next generation of powerful, meaningful products built with AI.

Job Overview

We’re seeking an exceptional Senior Software Engineer to join our LLM team. This role is focused on building and maintaining our LLM gateway service—a unified API platform that connects customers to multiple LLM providers. You’ll work on high‑impact projects that directly solve customer problems, improve their AI and agentic workflows, and ensure reliable access to the best models for their use cases.

This is a deeply customer‑focused role. You’ll work closely with our customer success team to understand customer challenges, help optimize their promp...