Senior Backend Engineer - Voice AI Startup
Join a fast-growing Y Combinator-backed Voice AI startup as a Senior Backend Engineer. You will architect the backbone of a platform handling millions of AI-driven calls, designing scalable backend systems and DevOps workflows. Collaborate with product and design teams to create intuitive APIs for rapid customer onboarding.
Key Highlights
Technical Skills Required
Benefits & Perks
Job Description
Senior Backend Engineer | Voice AI Startup
About the Company
Our client is a fast-growing Y Combinator-backed Voice AI startup. With $5M in seed funding and approaching $30M ARR already, achieved with just 20 people, they're building the standard for voice automation at scale.
The Role
A You'll architect the backbone of a platform handling millions of AI-driven calls. From real-time audio to worldwide telephony to the tools developers rely on, you'll be building it all alongside the founding team as they establish a new category leader.
Key Responsibilities
- Build foundational architecture including 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, owning delivery and monitoring
- Collaborate with product and design teams to create intuitive APIs for rapid customer onboarding
- Support customer onboarding, troubleshoot issues, and translate feedback into product improvements
Requirements
- 3+ years backend development experience
- CS, CE, or EE degree or equivalent practical experience
- Ownership mindset with passion for impactful software
- Thrives in fast-paced, ambiguous environments with strong problem-solving skills
- Clear communication and cross-functional collaboration abilities
- Bonus: Startup experience and cloud infrastructure/DevOps knowledge
Compensation & Benefits
- Salary: $200K - $280K USD
- Equity: 0.25% - 0.45%
- Schedule: Full-time, 70 hrs/week (50 onsite + 20 remote, flexible hours)
- Location: San Francisco Bay Area
- 100% medical, dental, vision coverage
- Unlimited meals and snacks
- Gym and commute reimbursement
- Visa sponsorship + relocation assistance available (H1B, TN, L-1, E-3, F-1, O-1)
Interview Process
- Online coding assessment (25-30 min)
- Technical phone interviews (2 rounds focusing on data structures and algorithms)
- Onsite/virtual interviews: practical coding, system design, and automation
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