Retell AI

Senior Software Engineer, Backend

San Francisco Bay Area · Senior

Work authorization required$200k-$300kDetected 595 days ago

PythonJavaReactNode.jsBackend DevelopmentDevOpsNegotiationLogisticsOnboardingCollaboration

About the role

As a Senior Backend Engineer, you'll shape the core systems powering millions of AI-driven conversations.
You'll tackle real-time audio, global telephony, and developer tooling, working across the stack with the founding team.
This high-impact role offers rapid feedback loops, customer collaboration, and the chance to define a category-leading product.

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.
Take ownership like a founder and enjoy building core systems that need to be fast, reliable, and correct.
Communicate clearly, collaborate well across teams, and move work forward with momentum.
Practical coding session focused on code fluency and system design (For frontend roles, we will focus on React-specific questions.
Let's build the future together.

Have 2+ years of backend development experience and a strong foundation in CS fundamentals (CS/CE/EE degree or equivalent).
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.

100% coverage for medical, dental, and vision insurance
$200/month wellness reimbursement (gym, fitness classes, etc.)
$300/month commuter reimbursement (gas, Caltrain, etc.)
$75/month phone bill reimbursement
$50/month internet reimbursement
Our vision for 2026 is to build a modern CX platform where entire contact centers are powered by AI.
Small teams, >$1M revenue/employee, and significant equity.
Have 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.
Equity: Offer Equity
Best Offer Upfront: Choose from three cash-equity balance options; no negotiation needed.

Retell AI is open to sponsoring work authorization for qualified candidates, including H-1B, TN, L-1, E-3, F-1 (OPT/CPT), and O-1 visas.

This listing is sourced directly from Retell AI's careers page and normalized into a canonical job model.