About the job
JOIN RETELL AI
At Retell AI, we are pioneering the future of call center operations by leveraging advanced voice AI technology based on first principles. Our innovative AI voice agents are transforming the way businesses handle sales, support, and logistics communications, significantly reducing the need for extensive human teams.
Having successfully scaled to $36M ARR within just 18 months, fueled by investments from Y Combinator and Alt Capital, our dedicated team of 20 is on a mission to revolutionize customer experience. We aim to develop a comprehensive CX platform by 2026, where AI powers entire contact centers, offering intelligent agents capable of executing, monitoring, and enhancing customer interactions without constant human intervention.
We are rapidly expanding and seeking driven innovators eager to tackle complex technical challenges and make a significant impact at one of the fastest-growing voice AI startups. Join us in shaping the future of customer experience.
Recognized as a top 50 AI app by a16z: https://tinyurl.com/5853dt2x
Ranked #4 on Brex's Fast-Growing Software Vendors of 2025: https://www.brex.com/journal/brex-benchmark-december-2025
Featured among the top startups on: https://leanaileaderboard.com/
ROLE OVERVIEW
We are seeking a passionate and innovative Research Scientist to join our team. In this high-impact role, you will focus on advancing machine learning capabilities for human-like voice agents operating in dynamic, real-world scenarios. Your expertise will be crucial in exploring new methodologies in LLMs and audio models, designing unique evaluation techniques, and prototyping systems that enhance reasoning, latency, and conversational quality.
This is a unique opportunity for those eager to delve into open-ended ML problems, rapidly experiment, and influence the performance and cognitive capabilities of voice AI systems at scale.

