Senior Backend Engineer

About the role

Retell AI is building a modern CX platform powered by voice AI. As a Senior Backend Engineer you will shape the core systems that handle millions of AI‑driven conversations, working closely with the founding team.

Key responsibilities

• Build foundational architecture such as prompt orchestration, testing frameworks, observability dashboards, and telephony integrations.
• Design scalable backend systems and DevOps workflows to ensure reliable performance across millions of calls.
• Lead complex projects from architecture through production, driving delivery and monitoring.
• Collaborate with product and design teams to create intuitive APIs for rapid customer onboarding.
• Support onboarding, troubleshoot issues, and turn feedback into product improvements.

Required profile

• 2+ years of backend development experience with strong CS fundamentals (CS/CE/EE degree or equivalent).
• Experience building scalable, high‑performance backend systems involving concurrency, data, storage, or distributed components.
• Founder‑like ownership mindset and ability to thrive in fast‑moving, ambiguous environments.
• Clear communication, strong collaboration across teams, and momentum‑driven work style.

Required skills

• Backend development
• Scalable system design
• Concurrency and distributed systems
• DevOps workflows

What we offer

• Base salary $200k‑$300k USD per year
• Equity options
• 100% medical, dental, and vision coverage
• $70/day DoorDash credit for meals
• Monthly wellness, commuter, phone, and internet reimbursements
• Visa sponsorship for qualified candidates