Full Stack Developer - Python/React.js

Job Description : Full Stack Developer (Python + AI + React + Node.js)

Experience : 5 - 7 Years

Location : Hyderabad (WFO)

Notice Period : 0 - 30 Days

About the Role :

We are building an AI receptionist and ambient assistant platform that answers and routes calls intelligently, books appointments automatically, summarizes conversations in real-time, and provides real-time help inside live calls.

Required Skills :

Real-time voice/telephony services :

• Build Python microservices (FastAPI) for call control, presence, and routing.
• Implement SIP/WebRTC/RTP signaling and media handling, conference control, and callflow orchestration.
• Create low-latency streaming ASR pipelines and TTS playback; manage VAD, diarization, barge-in.

AI assistants and conversation intelligence :

• Integrate ASR/TTS/STT vendors (Whisper/Deepgram/Google/OpenAI, etc.) and LLMs.
• Ship summarization, action-item extraction, and RAG over knowledge bases/Content.
• Implement prompt safety, guardrails, evaluations, and fallbacks.

Appointment scheduling and personal assistant features :

• Build booking flows with Google/Microsoft calendars, availability, buffers, reminders, time zones.
• Capture/relay messages, human escalation, policy-based routing and SLAs.

Ambient assistance in live calls :

• "Join/leave" wake phrases; real-time IM/notes; add/remove participants; read knowledge on demand.

Core Python :

• Strong proficiency in Python 3.8+
• Deep understanding of OOP, decorators, context managers, and generators
• Experience with async/await, asyncio, and concurrent programming
• Authentication and authorization (JWT, OAuth, session-based)
• Familiarity with type hints and static analysis tools (mypy)

Web Frameworks :

• Django or FastAPI (production experience required)
• ASGI servers (Uvicorn, Gunicorn)
• RESTful API design and implementation

Node.js :

• Proficiency in Node.js with Express.js or NestJS
• Real-time applications with Socket.io
• Caching with Redis for caching and sessions

React.js :

• Functional components with Hooks (useState, useEffect, useContext, useMemo)
• State Management : Redux Toolkit, Zustand, or Context API
• API Integration : Axios, React Query, or SWR

Tech Stack :

• Backend : Python 3.11+, FastAPI, Pydantic, asyncio
• Frontend : React.js, Redux Toolkit
• Runtime : Node.js, Express.js / NestJS
• Real-time : WebSockets, gRPC, SIP/WebRTC/RTP
• AI/Voice : OpenAI, Whisper, Deepgram, Google STT/TTS
• Data : PostgreSQL, MySQL, Redis, Kafka
• Infra : AWS/Azure