Founding Backend Engineer – Scale AI Voice Platform

Stealth Startup; San Francisco (CA); Hybrid; USD 215,000 - 290,000; Full time

Benefits offered by this job

Unlimited meals

Gym reimbursement

Internet/Phone coverage

Job summary

Stealth Startup is seeking a Founding Senior Backend Engineer to shape core systems powering millions of AI-driven conversations. You’ll tackle real-time audio, telephony, and developer tooling, collaborating with the founding team from architecture to production.

You will own scalable backend design, DevOps workflows, and customer onboarding, with strong emphasis on impact, fast feedback, and cross-functional collaboration. Hybrid work with onsite Redwood City base.

Qualifications

• 2+ years backend development experience with a CS/CE/EE degree.
• Startup environment experience or grit is preferred.
• Ability to own projects from architecture to production.
• Cloud infra/DevOps knowledge is a bonus.

Responsibilities

• Build foundational architecture for the platform, including prompt orchestration and telephony integrations.
• Design scalable backend systems and DevOps workflows for reliable performance across millions of calls.
• Lead complex projects from architecture to production and drive delivery and monitoring.
• Collaborate with product and design to create intuitive APIs and onboarding interfaces.
• Support customer onboarding, troubleshoot issues, and turn feedback into product improvements.

Skills

Backend development

DevOps knowledge

Cloud infrastructure

API design

Education

CS/CE/EE degree

Tools

Observability dashboards

Job description

Stealth Startup is seeking a Founding Senior Backend Engineer to shape core systems powering millions of AI-driven conversations. You’ll tackle real-time audio, telephony, and developer tooling, collaborating with the founding team from architecture to production.

You will own scalable backend design, DevOps workflows, and customer onboarding, with strong emphasis on impact, fast feedback, and cross-functional collaboration. Hybrid work with onsite Redwood City base.