AI Voice Agent Platform for Phone Call Automation
Retell AI is using the first principles to reimagine the call center with cutting edge voice AI.
Since launching 18 months ago, thousands of companies now utilize Retell’s AI voice agents to handle sales, support, and logistics calls that once required large teams of human agents. Backed by Y Combinator, Altman Capital, and other leading investors, we have scaled to $36M ARR with a team of 20 people, up from $5M at the start of 2025.
In 2026, We are expanding our vision to build a CX platform of the AI era where the entire contact center is reimagined as a team of AI employees. We are moving beyond mechanical automation that relies on human finetuning to instead transform core functions into intelligent, opinionated AI roles. Frontline agents, QA analysts, and managers now operate as distinct digital workers that serve as the new interface for customer experience. They execute, monitor, and improve continuously to create a system where software behaves like an organization.
We’re scaling fast, and we’re looking for bold, ambitious people to help us build the gold standard for voice automation. If you want to work on deeply technical challenges, move fast, and make an outsized impact at one of the fastest-growing Voice AI startups in the world, you’ll love it here.
Let’s build the future together.
Weijia Yu
Weijia excels in product and software development, with a specialization in machine learning. At Meta, he spent three years as a PM hybrid Tech Lead within Facebook product team. Prior to Meta, Weijia led app development at ObEN, a Series B AI tech startup, providing full-stack AI solutions including TTS(text-to-speech), computer vision and chatbot.
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Evie Wang
Evie is the Co-founder and CMO of Retell AI She has a design background and a deep understanding of B2B business as she spent 3 years as a Product Designer at Bytedance.
LinkedInZexia Zhang
Zexia is the co-founder and CTO of Retell AI. Passionate about ML, Zexia is always at the frontier of advancing speech technologies. Before Retell, Zexia spent four years at Google where he led the development of next-gen speech translation experience, and NLP solutions for call analysis.
Bing Wu
Co-founder & CEO at Retell AI. Enthusiastic about the human brain and AI, Bing spent three years as a product manager at ByteDance/TikTok, where he led B2B and consumer products that delighted billions. Before joining ByteDance/TikTok, Bing founded two investor-backed startups in college, generating six-figure revenues.
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Zexia Zhang
Zexia is the co-founder and CTO of Retell AI. Passionate about ML, Zexia is always at the frontier of advancing speech technologies. Before Retell, Zexia spent four years at Google where he led the development of next-gen speech translation experience, and NLP solutions for call analysis.
LinkedIn