Senior Software Engineer - Full Stack

ABOUT RETELL AI

Retell AI is using the first principles to reimagine the call center with cutting edge voice AI.

We believe voice is still the most natural way humans communicate, yet it has been trapped in outdated call centers for decades. Our mission is to bring intelligence, empathy, and speed to every phone conversation between businesses and their customers.

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 $30M ARR with a team of 20 people, up from $5M at the start of 2025.

Now, 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 of voice automation together.

• We're a top 50 AI app in a16z list :
• We're also one of the top ranking startups on :

CULTURE

We like to keep it real, we move fast, build fast, and change fast. That's part of the fun for us, but we know it's not for everyone.

ABOUT THE ROLE

As a Senior Full-Stack Engineer, you'll shape the heart of Retell AI's voice automation platform, building scalable systems and intuitive interfaces that power millions of AI-driven conversations. You'll work across the stack-leveraging React, TypeScript, and Node.js-to deliver fast, beautiful, and reliable solutions. Collaborating closely with the founding team, you'll bridge backend architecture (like prompt orchestration and telephony integrations) with frontend experiences (such as dashboards and analytics tools), ensuring seamless customer onboarding and impactful user experiences. This high-impact role offers rapid feedback loops, customer collaboration, and the opportunity to define a category-leading product that transforms global communication.

KEY RESPONSIBILITIES

YOU MIGHT THRIVE IF

JOB DETAILS

OTHER BENEFITS

COMPENSATION PHILOSOPHY

$1M revenue / employee, and significant equity.

INTERVIEW PROCESS

Practical Coding : Tackle real-world coding tasks with debugging.

Learn More

Retell AI - API That Turns Your LLM Into A Human-Like Voice Agent

Retell AI Basics : Everything You Need to Start Building Voice Agents

Join Retell AI to shape the future of voice automation, building scalable, impactful full-stack systems that redefine AI-driven communication.