S

Founding Senior Backend Engineer

Stealth Startup • San Francisco Bay Area
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This Job is No Longer Active This position is no longer accepting applications

We're seeking a Founding Senior Backend Engineer to shape the core systems powering millions of AI-driven conversations. The ideal candidate will have 2+ years of backend development experience and a degree in CS, CE, or EE. The role offers rapid feedback loops, customer collaboration, and the chance to define a category-leading product.

Key Highlights
Build foundational architecture for the company's platform
Design scalable backend systems and DevOps workflows
Lead complex projects from architecture to production
Key Responsibilities
Build foundational architecture for the company's platform
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
Technical Skills Required
Backend development DevOps Telephony integrations
Benefits & Perks
100% medical, dental, vision insurance coverage
Unlimited breakfast, lunch, dinner, and snacks
Gym and daily commute fee reimbursement
Nice to Have
Cloud infra/DevOps knowledge

Job Description

About

We're not just automating calls—we’re transforming how the world communicates. Our AI voice agents are reshaping sales, support, and customer engagement for leading brands. Backed by Alt Capital, Y Combinator, and top-tier investors, we've raised $4.7M in seed funding and hit $14M ARR with just 12 people.

We’re one of the fastest-growing Voice AI startups and we're on a mission to become the standard for voice automation at scale.

About the Role

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