Fullstack Developer - Founding Team

Founding Full Stack Engineer (Voice + AI CRM Platform)

Gurgaon | Onsite | Full-time

voice-first, multilingual AI assistant

Founding Full Stack Engineer

Location : Gurgaon, Work from Office.

contact@insybit.com

https://docs.google.com/forms/d/e/1FAIpQLSd3VHkTj17-hPw3BgQVtATXWx5dzTXpwyy_E_xO15rtQkPmgw/viewform?usp=sharing&ouid=100047232028293343480

Role & responsibilities

• Design and develop scalable backend services using

  Node.js + Express

  or

  Python + FastAPI

• Design frontend systems (chat widget + admin dashboards+websites) using React + Tailwind
• Design &

  Build AI CRM

  with features like lead management, agent assignment, status tagging, history tracking, and analytics
• Build

  lead management workflows

  : submission, scoring, tagging, follow-ups via WhatsApp/email/Voice
• Integrate telephony or IVR platforms like Twilio, Exotel, or Ozontel for calls and voicebots.
• Create the technical architecture of the system.
• Design and develop database schema as per the requirement
• Integrate WhatsApp APIs (Gupshup or Twilio) and handle conversational workflows
• Collaborate with AI engineer to implement - GPT-4/Gemini-based conversation flows, Post-call analysis (Whisper/Gemini STT),
• Multilingual memory and tone detection logic.
• Design robust

  MongoDB/PostgreSQL

  schemas and APIs
• Deploy and manage infrastructure via

  AWS/GCP/Azure

  with CI/CD and observability
• Ensure

  high uptime, secure data handling, and fast responses

  across all channels

Must have Skills:

• 36 years of

  full-stack development experience

  , preferably in startups or fast-paced teams
• Strong proficiency with

  Node.js/Express

  ,

  React

  ,

  MongoDB

  , REST APIs, and webhooks
• Experience building

  admin tools

  , internal CRMs, or customer-facing dashboards
• Deep understanding of

  database design

  , caching, and async workflows
• Hands-on with modern frontend (Tailwind, component libraries)
• Strong Experience with

  GitHub workflows, CI/CD pipelines

  , and cloud deployments on AWS/GCP/Azure

Bonus:

• Experience working with OpenAI, Gemini, or other LLMs
• Experience integrating STT engines (e.g., Whisper, Google STT) or AI classifiers
• Redis or vector DB familiarity for user memory or personalization
• Prior work on chatbots, voicebots, or conversational flows
• Exposure to building or integrating LMS/CRM platforms
• Integrated telephony and whatsapp APIs like Twilio, Exotel, or Ozontel

Preferred candidate profile

AI-driven, voice-first CRM platforms