// lead software engineer · mumbai, india

Sumit Kumar
Yadav

I design and build backend systems that don't fall over — distributed services, async job pipelines, and cloud-native APIs for enterprise healthcare platforms used by global pharma teams.

  • 7+years shipping backend systems
  • 5enterprise platforms led
  • 150K+downloads on a shipped product

01 · about

Portrait of Sumit Kumar Yadav

Backend systems, at enterprise scale.

I'm a Lead Software Engineer specializing in scalable enterprise applications, distributed systems, and cloud-native backend platforms. Right now I lead backend engineering at Indegene, where I design microservice architectures and secure REST APIs for pharmaceutical content authoring, digital asset management, and publishing platforms used by global pharma clients.

My day-to-day sits at the intersection of system design and execution: architecting services, running code reviews, mentoring engineers, and working directly with architects, product owners, and business stakeholders to ship things that hold up in production. I'm most at home designing asynchronous, queue-based processing — offloading heavy work into independently scalable services rather than letting it slow everything else down.

Languages English (Professional) · Hindi (Native) · Marathi (Conversational)
Education MCA, Late Bahusaheb Hiray S.S. Trust Institute · 2015–2018
Off the clock Long conversations about how people got where they are · walks outdoors

02 · experience

Where I've built things.

  1. Oct 2024 — Present

    Lead Engineer · Indegene

    Technical leadership for backend engineering across multiple enterprise healthcare products — mentoring engineers, running code reviews, and partnering with architects, product owners, QA, and DevOps. Designed Tusker, a dedicated microservice for asynchronous PDF and screenshot generation, offloading heavy rendering from client apps and materially improving platform scalability. Also building AI-assisted automation for publishing workflows, including visual comparison of successive publish versions for content validation.

    • Node.js
    • Fastify
    • Keycloak
    • BullMQ
    • AWS
    • MongoDB
  2. Oct 2021 — Oct 2024

    Senior Solution Engineer · Deqode

    Designed and delivered backend solutions for enterprise and consumer-facing apps — owning API development, database design, deployments, and production support across multiple projects, including VaynerSportsPass and Mobile IP.

    • NestJS
    • TypeScript
    • Prisma
    • MySQL
  3. Oct 2020 — Oct 2021

    Software Engineer · MSMEX Pvt. Ltd.

    Designed backend architecture and REST APIs for webinars, masterclasses, expert consultations, user management, and payment workflows. Recognized organizationally for delivering high-impact features.

    • Node.js
    • React
    • MySQL
    • AWS
  4. Mar 2018 — Aug 2020

    Junior Software Developer · Binary Numbers IT Zone

    Built full-stack web and mobile applications across healthcare and AI-driven products, including Capshun, Unpaniq, and Acadmed — from requirement analysis through production deployment.

    • Node.js
    • React
    • Flutter
    • MongoDB
    • MySQL

03 · selected projects

What I've shipped.

Tusker

Enterprise · Indegene

Lead Engineer · Sep 2022 — Present

A distributed microservice for asynchronous PDF and screenshot generation, built on queue-based processing with BullMQ workers. Eliminated heavy rendering workloads from client applications by processing generation requests independently, improving stability by isolating resource-intensive operations into a service that scales on its own.

  • Node.js
  • Fastify
  • BullMQ
  • Keycloak

CS e-Detail & CS Email

Enterprise · Indegene

Lead Engineer · Sep 2022 — Present

Backend services for pharmaceutical content authoring — from a DAMS-compliant deck design tool to an email template builder that imports modules from in-house sources and produces publish-ready templates for agencies and internal teams.

  • Node.js
  • Fastify
  • MongoDB
  • React
  • GrapesJS
  • AWS

VaynerSportsPass

Live ↗

Senior Software Developer · May 2022 — Sep 2022

Backend infrastructure for a generative-NFT raffle platform granting access to the Vayner network of athletes and collectibles — integrating on-chain contract hooks and building a safelist system to restrict access to sensitive information.

  • Next.js
  • NestJS
  • TypeScript
  • Prisma
  • MySQL

Mobile IP

Clinical Research

Senior Software Developer · Dec 2021 — Apr 2022

A clinical research app connecting Primary Investigators, Sub-Investigators, and Study Coordinators — integrating a Node.js backend with the mobile frontend, databases, and third-party APIs end to end.

  • Node.js
  • React Native
  • MongoDB
  • Docker
  • Azure

MSMEX

Live ↗

Software Engineer · Oct 2020 — Oct 2021

Live business learning for micro and small business owners. Engineered APIs and backend architecture for webinars, masterclasses, and 1-to-1 expert calls — payments, coupons, and user engagement across web and mobile.

  • Node.js
  • Express
  • Next.js
  • Razorpay
  • Firebase

Capshun

Archived

Junior Software Developer

Captions and hashtags for Instagram/Facebook. Built Node.js APIs powering a Flutter app and React admin panel, with AI-driven image processing and object detection to generate personalized captions. Reached 150K+ downloads across 200+ countries before the product changed ownership.

  • Node.js
  • Express
  • Flutter
  • MongoDB
  • Firebase

04 · skills

The toolbox.

Languages

  • Node.js
  • JavaScript
  • TypeScript
  • Python

Backend

  • Fastify
  • NestJS
  • Express.js
  • REST APIs
  • Microservices

Frontend

  • React.js

Databases & ORM

  • MongoDB
  • PostgreSQL
  • MySQL
  • DynamoDB
  • Prisma
  • Sequelize
  • Mongoose

Cloud & DevOps

  • AWS EC2
  • Lambda
  • S3
  • SES
  • CloudFront
  • IAM
  • CloudWatch
  • Docker
  • DigitalOcean
  • Firebase
  • Heroku

Architecture

  • Distributed Systems
  • Event-Driven Architecture
  • Queue-Based Processing
  • Server-Sent Events

Caching & Messaging

  • Redis
  • BullMQ
  • RabbitMQ

Security

  • Keycloak
  • OAuth 2.0
  • JWT

AI & Automation

  • Prompt Engineering
  • AI-assisted Development
  • Computer Vision

Testing & CI/CD

  • Jest
  • Mocha
  • GitLab CI
  • AWS CodePipeline

05 · contact

Let's build something that scales.

Open to conversations about backend architecture, distributed systems, or roles where that's the whole job. Reach out — I read everything.