Founding Software Engineer

Boston / CambridgeFull-time$100k–$150k2026-11-07 → 2026-11-10

HybridVisa sponsorship offered

Core

Build a real-time, AI-native medical interpretation platform connecting patients and clinicians via voice-to-voice translation in the browser.

Role type

Founding full-stack engineer (real-time audio/video & agentic AI)

Builds

Real-time WebRTC stack, agentic AI interpreter, clinician/patient web client

Domain

Healthcare + Real-time communication + AI

Deliverable

production ML models

Required skills

Full-stack engineering, Next.js/React, WebRTC/MediaStream APIs, Backend (Go/TypeScript/Python), SQL, Cloud infrastructure, CI/CD

Preferred skills

Agentic AI, Voice agents, NLP, Speech recognition/synthesis, Audio signal processing, LiveKit/Twilio/SIP/VoIP, Regulated domain experience

Technologies

Next.js, React, WebRTC, Go, TypeScript, Python, SQL, LiveKit, Twilio, SIP, VoIP

Responsibilities

Architect and build the provider/patient web app and WebRTC layer (media negotiation, audio routing, reconnection, observability); Design agentic behavior for the AI interpreter; Drive product strategy with founders; Build and shape the engineering team

Seniority

Founding, high autonomy, small team

About Lexi

10 Employees

Lexi is an early stage Harvard–backed startup building AI-native, real-time medical interpretation so clinicians and patients can communicate clearly across languages. Every day, clinicians lose precious time and patients face preventable risks because they can’t speak the same language, while traditional interpretation services remain slow, costly, and inconsistent in quality. For patients with limited English proficiency, this shapes every encounter with the health system.