Retell AI · 4 hours ago
Senior Software Engineer, Backend
San Francisco Bay Area
Full-time
Onsite
Mid, Senior Level
$215K/yr - $290K/yr
2+ years expRetell AI is a rapidly growing startup focused on reimagining call centers with advanced voice AI technology. The Senior Backend Engineer will play a crucial role in shaping core systems for AI-driven conversations, tackling real-time audio and global telephony while collaborating with the founding team to define a leading product.
Artificial Intelligence (AI)AudioCall CenterGenerative AITelecommunications
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
Qualification
Required
Have 2+ years of backend development experience and a strong foundation in CS fundamentals (CS/CE/EE degree or equivalent)
Have worked on scalable, high-performance backend systems — especially anything 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
Preferred
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
Benefits
100% coverage for medical, dental, and vision insurance
$70/day DoorDash credit for unlimited breakfast, lunch, dinner, and snacks
$200/month wellness reimbursement (gym, fitness classes, etc.)
$300/month commuter reimbursement (gas, Caltrain, etc.)
$75/month phone bill reimbursement
$50/month internet reimbursement
Company
Retell AI
Retell AI is the AI voice platform that helps corporate call centers automate calls indistinguishable from human.
11-50 employees
H1B Sponsorship
Retell AI has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (5)
2024 (3)
Funding
Current Stage
Early StageTotal Funding
$4.68MKey Investors
Alt CapitalY Combinator
2024-04-03Seed· $4.55M
2023-11-01Pre Seed· $0.12M
Leadership Team
Evie Wang
Co-Founder
Recent News
2025-12-17
Company data provided by crunchbase