About the role
ABOUT RETELL AI
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, Alt 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.
Our vision for 2026 is to build a modern CX platform where entire contact centers are powered by AI. Instead of basic automation that needs constant human tuning, we’re creating intelligent AI “workers” that can act as frontline agents, QA analysts, and managers — continuously executing, monitoring, and improving customer interactions.
We’re growing quickly and looking for ambitious builders who want to tackle hard technical problems, move fast, and have real impact at one of the fastest-growing voice AI startups.
Let’s build the future together.
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We’re a top 50 AI app in a16z list: https://tinyurl.com/5853dt2x
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#4 on Brex's Fast-Growing Software Vendors of 2025: https://www.brex.com/journal/brex-benchmark-december-2025
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We're also one of the top ranking startups on: https://leanaileaderboard.com/
ABOUT THE ROLE
As a Founding Senior Data Engineer at Retell, you will build the company’s analytics foundation from the ground up. You will own how data flows, how metrics are defined, and how decisions get made across Product, GTM, Finance, and Infrastructure.
This is a highly technical, high-leverage role. You’ll work directly with the founders and functional leads to turn raw data from product events, billing systems, CRMs, and internal services into reliable insights that shape strategy, pricing, hiring, and product direction.
