Founding Senior Full-Stack Engineer

As a Founding Senior Full-Stack Engineer, you’ll build the core platform powering millions of AI-driven conversations. Working with React, TypeScript, and Node.js, you’ll create scalable systems and intuitive interfaces that enable seamless customer experiences., * Develop core features including prompt orchestration, dashboards, analytics, and telephony integrations

• Build full-stack systems from polished UIs to robust APIs and DevOps workflows
• Own projects end-to-end from architecture to production deployment
• Create intuitive interfaces enabling rapid customer activation
• Support customer onboarding and translate feedback into product improvements

• 2+ years full-stack experience with React, TypeScript, Node.js, or Python
• CS/CE degree or equivalent practical experience
• Ownership mindset with ability to solve problems independently
• Thrives in fast-paced, dynamic environments
• Strong communication and collaboration skills

Our client is a fast-growing Y Combinator-backed Voice AI startup transforming sales, support, and customer engagement. 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.