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Barun kumar User

@barunkumaruser

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Senior Frontend Engineer at Nisum Consulting building rental commerce features and integrating LLM-powered workflows.

India

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What I'm looking for

I’m seeking a challenging role where I can use AI-powered tools and intelligent automation in frontend development to build smarter, scalable, user-centric applications. I’m interested in integrating Generative AI, AI-assisted UI personalization, predictive user behavior analytics, and workflow automation into modern web platforms.

At Nisum Consulting, I’m developing TBI-Rental, an e-commerce platform for product rentals, pricing, and availability. I implemented feature-flagged rollouts and reusable React and Next.js components.

I’ve integrated LLM-powered capabilities and AI-assisted workflows into the platform. I also work on REST API integrations and frontend performance improvements.

At Persistent Systems, I modernized legacy UI components for Intuit’s email marketing application using React and Next.js. I implemented CDP-based feature flags to control how new features were rolled out.

Earlier, I migrated a teacher-student tuition app from Ionic 4 to Ionic 8 at ESME Digital and developed frontend and backend features for a helpdesk platform at Roitech. Across my roles, I’ve worked on healthcare, retail, employee claims, and e-commerce applications.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Nisum Consulting

Jun 2025 - Present (1 year 4 months)

Developed and enhanced a rental-based e-commerce platform with feature-flag-driven architecture and AI-powered capabilities. Built scalable UI components and integrated REST APIs and LLM-powered features.

React Next.js Redux toolkit TypeScript Tailwind Material UI NodeJS REST APIs LLM APIs AI Powered Interfaces GitHub

Software Engineer

Persistent Systems

Oct 2024 - Jan 2025 (3 months)

Modernized an email marketing platform by redesigning legacy UI components and implementing CDP-based feature flagging for controlled rollout. Built reusable modular components and collaborated with cross-functional teams.

React Next.js Angular Redux TypeScript Tailwind Material UI NodeJS REST APIs Git

Full Stack Developer

ESME Digital

Apr 2024 - Oct 2024 (6 months)

Created UI templates from wireframes and migrated a Teacher-Student tuition app from Ionic 4 to Ionic 8. Built frontend using Angular 16 and React 18, integrated GenAI features, and managed state with Redux Toolkit and NgRx.

React Next.js Angular Redux TypeScript Ionic Tailwind Material UI NodeJS REST APIs Git

React Consultant

Roitech

Jan 2023 - Jan 2024 (1 year)

Developed a helpdesk and alumni management platform, designing scalable frontend architecture and implementing end-to-end features with Node.js and MongoDB. Integrated REST APIs, used Docker for containerization, and implemented Cypress testing.

React Redux TypeScript NodeJS MongoDB Tailwind REST APIs Webpack Docker Cypress Git

Software Engineer

Prowiz Mansystems Pvt Ltd

May 2016 - Jan 2023 (6 years 8 months)

Developed healthcare benefits applications, retail contract management systems, employee claim management portals, and corporate/e-commerce portals using Angular and React. Worked on XML labeling and AI-driven extraction systems.