Senior Full-Stack Software Engineer

This is a high-impact full-stack engineering role at a fast-growing, YC-backed Voice AI startup. You'll help shape a platform that powers millions of AI-driven conversations, working across the entire stack to deliver scalable systems and polished user experiences that define a new category in global communication.

• Build core product features including prompt orchestration, analytics dashboards, and telephony integrations.
• Develop full-stack systems end-to-end, from polished frontend UIs to robust backend APIs and Dev Ops workflows.
• Lead projects from initial architecture through production deployment and iterative improvement.
• Design intuitive interfaces and APIs that enable customers to onboard and activate quickly.
• Support customer onboarding, debug production issues, and translate user feedback into product enhancements.
• Collaborate closely with the founding team to bridge backend architecture and frontend experience.

• 5 to 10+ years of software engineering experience, with meaningful time spent at VC-backed startups, ideally in a founding or early engineer capacity.
• Strong proficiency in React and Type Script for frontend development.
• Strong proficiency in backend languages, specifically Python or Node.js, and hands-on experience with AWS.
• Deep knowledge of distributed systems architecture and implementation.
• Proven track record of shipping full-stack features end-to-end in production environments.
• Background in fast-moving, high-growth tech environments, with a strong computer science foundation (degree in CS, Computer Engineering, or Electrical Engineering preferred).
• Experience with Voice AI systems or prior senior/staff-level engineering roles is a plus.

Base salary range: $215,000 to $290,000 USD annually
. Visa sponsorship is available.

On-site in Redwood City, California, United States.