Senior Software Engineer, Backend

Retell AI· Redwood City, CA, US

Posted October 31, 2026

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Experience
3+ years
Pay
$215K – $290K per year
Education
Not specified
Location
Redwood City, CA, US
Work mode
On-site
Job type
Full-time

About this role

Retell AI builds AI voice agents that handle sales, support, and logistics calls for enterprises. This role shapes core backend systems for real-time audio, telephony, and developer tooling that power millions of AI-driven conversations.

What you will do

  • Build foundational architecture for prompt orchestration, testing frameworks, observability, and telephony integrations
  • Design scalable backend systems and DevOps workflows for millions of calls
  • Lead complex projects from architecture to production
  • Collaborate with product and design on APIs and interfaces
  • Support customer onboarding and turn feedback into improvements

What the employer expects

  • 2+ years backend development experience with CS fundamentals
  • Experience with scalable high-performance backend systems involving concurrency or distributed components
  • Ability to take ownership like a founder
  • Thrive in fast-moving ambiguous environments
  • Clear communication and collaboration skills

Benefits

  • 100% coverage for medical, dental, and vision insurance
  • $70/day DoorDash credit
  • $200/month wellness reimbursement
  • $300/month commuter reimbursement
  • $75/month phone bill reimbursement
  • $50/month internet reimbursement

Skills

  • AWS
  • JavaScript
  • Node.js
  • PostgreSQL
  • DynamoDB

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