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Full Stack Developer

Actively Reviewing the Applications

3sigma crm

India On-site
Posted 1 day ago Apply by June 13, 2026

Job Description

This role is mostly about working on an existing, live production product used by real customers daily.

You will:

  • Improve existing features
  • Build new features on top of current architecture
  • Fix production issues
  • Optimize performance and stability
  • Work inside a structured but fast-moving codebase

This is not greenfield development.

What You Will Do

  • Work on existing Node.js backend services
  • Build and enhance React Native mobile app features (Primary Work)
  • Add new modules inside current architecture
  • Fix bugs and production issues quickly
  • Improve performance, sync reliability, and app stability
  • Work on integrations (APIs, messaging, third-party services)
  • Understand legacy decisions and improve them safely

Tech Stack

  • Node.js
  • TypeScript
  • React Native (Primary)
  • MongoDB
  • Redis (Plus)
  • AWS / Cloud (Plus)

Reality Of The Role

  • Large part of work is improving and extending existing systems
  • Need to read and understand current code before building new features
  • Balance between speed and stability is critical
  • Production safety matters — real users depend on it

Must Have

  • Strong Node.js experience
  • Strong React Native hands-on development
  • TypeScript working knowledge
  • Experience working on live production apps
  • Comfortable working inside existing codebases
  • Debugging skills (logs, production issue tracing, root cause)

Good To Have

  • SaaS / CRM product experience
  • Experience maintaining legacy or mid-stage product code
  • Performance optimization experience
  • Mobile app release cycle understanding

Who Will Do Well

  • Developers who can read existing code fast
  • People who like improving systems, not just building new ones
  • People who can ship safely without breaking production
  • Engineers who think product impact, not just tickets

Basic Qualification

  • 2–4 years real product development experience
  • Must have worked on at least one live production app

Job Type: Full-time

Pay: ₹13,961.29 - ₹40,000.00 per month

Experience:

  • nodejs: 2 years (Required)
  • React Native: 2 years (Required)

Work Location: Remote

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