Sumit Pande

Developer 

Full Stack Engineer specializing in backend systems, distributed architecture, and scalable real-time applications using Node.js, TypeScript, PostgreSQL, Redis, Kafka, and React.

About Me
Full Stack Engineer with 4+ years specializing in backend systems, distributed architecture, and internal platform engineering. Experienced in building scalable real-time applications, microservices, event-driven systems, and developer platforms using Node.js, TypeScript, React, PostgreSQL, Redis, and Kafka. Strong expertise in system design, API architecture, schema modeling, authentication systems, and production-ready infrastructure. Known for owning greenfield products end-to-end — from architecture and schema design to deployment and optimization.
Experience
  • July 2022 - Present
    Software Engineering Specialist
    Dassault Systèmes

  • Led end-to-end development of enterprise-grade internal platforms used across multiple teams, focusing on scalability, maintainability, and performance.
  • Built backend systems and APIs using Node.js and TypeScript, improving operational workflows and reducing manual effort through automation.
  • Designed and developed real-time and data-intensive features using distributed system principles and event-driven architecture.
  • Implemented AI-assisted tooling and workflow automation solutions to improve user productivity and platform usability.
  • Created reusable shared libraries and developer utilities adopted across multiple projects, improving development consistency and reducing duplication.
  • Collaborated closely with cross-functional teams on architecture design, code reviews, deployment workflows, and production support.

    • Projects
  • Nexus
    Nexus

  • Designed a horizontally scalable real-time messaging system supporting direct and group conversations using Redis Pub/Sub adapter for distributed WebSocket event fan-out.
  • Built a Notification Microservice consuming Kafka events and routing notifications to email and in-app channels with retry and dead-letter handling.
  • Implemented secure JWT authentication with HTTP-only refresh tokens, token rotation, reuse detection, and Redis-backed session management.
  • Modeled a normalized PostgreSQL schema with composite indexing and cursor-based pagination optimized for high-throughput message retrieval.
  • Architected the platform using Node.js, TypeScript, PostgreSQL, Redis, Kafka, Docker, and Socket.io following scalable microservice patterns.

    • ReactNode.jsTypeScriptPostgreSQLRedisKafkaSocket.ioDocker
    • Skills

    Node.js

    TypeScript

    Java

    Python

    REST APIs

    Microservices

    System Design

    Distributed Systems

    React.js

    Next.js

    Vue.js

    JavaScript

    HTML5

    CSS3

    Zustand

    PostgreSQL

    MongoDB

    Redis

    Kafka

    Prisma

    GraphQL

    Database Design

    Event-Driven Architecture

    Docker

    AWS

    Git

    GitHub

    CI/CD

    NPM Publishing

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