Senior Frontend Engineer – Real-time Voice Translation Platform

About the role

We’re building VertoX, an AI‑powered real‑time voice translation platform that translates speech while preserving the user’s original voice, tone, and emotion. This founding‑team position works directly with the Founder, AI/ML Engineer and Backend Engineer.

Key responsibilities

• Own the VertoX web application using React, Next.js and TypeScript.
• Integrate the frontend with backend APIs, production infrastructure and real‑time communication layers.
• Build the live translation experience, handling audio streaming, transcripts, captions and voice output.
• Implement core SaaS features such as authentication, profiles, subscriptions, billing and account management.
• Develop developer‑facing functionality including API keys, usage dashboards and an API playground.

Required profile

• Strong professional experience with React, TypeScript and Next.js.
• Production experience building real‑time voice/audio applications.
• Hands‑on knowledge of WebRTC and WebSockets.
• Understanding of audio streaming, STT/TTS, latency and buffering.
• Experience integrating frontend applications with production backend APIs.

Required skills

• React
• TypeScript
• Next.js
• WebRTC
• WebSockets
• Web Audio API / MediaRecorder
• JWT and OAuth authentication
• API integration

What we offer

• 1 % equity – you become a part‑owner of VertoX.
• Salary to be discussed after funding.
• Direct collaboration with the founding team.
• High ownership and the chance to build a global AI product from an early stage.