Full Stack Engineer

The role

You will build and maintain high-performance web applications using React and Next.js. You will design end-to-end features and work across the engineering stack to build voice AI agent experiences.

What you will do

• Build and maintain high-performance, responsive web applications using React and Next.js
• Design and implement end-to-end features across frontend and backend systems
• Work closely with backend engineers to integrate APIs, real-time systems, and voice AI workflows
• Own UI/UX quality
• Manage state effectively across complex applications
• Optimize frontend performance
• Build internal tools and dashboards for monitoring, debugging, and controlling AI agents
• Write clean, maintainable, and well-tested code across the stack
• Debug production issues and continuously improve reliability and usability
• Contribute to system design, architecture decisions, and product direction

Required qualifications

• 5+ years of experience building production applications
• Strong experience with React and Next.js
• Experience building full-stack applications (API design, backend integration)
• Solid understanding of TypeScript, modern frontend tooling, and state management
• Experience working with APIs, real-time systems, and async data flows
• Understanding of performance optimization and scalable frontend architecture
• Familiarity with cloud environments, CI/CD, and modern deployment workflows
• Strong product sense and attention to detail
• Clear communicator who can work across teams

Benefits

• We eat meals together (company-paid)
• We run, hike, and surf
• We travel together (Airbnbs in places like the Rockies, Costa Rica, Indonesia—multiple times a year)

About the company

phonely is a team of ex-athletes, founders, and builders. They are building voice AI agent experiences for businesses.