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Retell AIRetell AIRedwood City, CA

Senior Software Engineer, Backend

Builds scalable backend systems for AI voice platform handling millions of calls, focusing on prompt orchestration, telephony integrations, and DevOps workflows. Requires 2+ years backend experience with CS fundamentals, concurrency, and distributed systems.

200k – 300k/yr
On-site2+ YOEBackend Engineering

About the role

Key Responsibilities

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

Requirements

  • 2+ years of backend development experience and a strong foundation in CS fundamentals (CS/CE/EE degree or equivalent).
  • Worked on scalable, high-performance backend systems — especially involving concurrency, data, storage, or distributed components.
  • Take ownership like a founder and enjoy building core systems that need to be fast, reliable, and correct.
  • Thrive in fast-moving, ambiguous environments where you learn quickly and solve new technical problems.
  • Communicate clearly, collaborate well across teams, and move work forward with momentum.
  • Startup experience or the grit to operate in a high-velocity environment — bonus points if you’ve worked on infrastructure, databases, or large-scale backend systems.

Compensation & Benefits

Cash: $200k - $300k
Equity: Offered
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

PythonJavaNode.jsAPIsDevOpsKubernetesDatabasesDistributed SystemsTelephonyObservability

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