Open to opportunities

Rajeev Ranjan Singh

@rajeevranjansingh

Message

I build scalable full-stack web products, real-time analytics dashboards, and AI-driven applications.

India

Message

What I'm looking for

I'm looking to build reliable, scalable full-stack and AI-driven products with cross-functional engineering, product, data science, and DevOps teams.

I've built production-grade web applications at Novalyze AI, Ment Tech, Kellton Tech, and Cognizant, spanning real-time analytics, product management, e-commerce, and data-driven dashboards.

At Novalyze AI, I develop scalable React.js, Next.js, Python, and Flask applications, including an analytics dashboard, AI-assisted chat, secure RBAC, and a real-time notification system that increased user engagement by 30%. I deploy and maintain applications on AWS with Docker and CI/CD while partnering with data science, DevOps, and backend teams on AI and predictive analytics modules.

I've also improved page-load performance, built reusable component systems, mentored junior developers, and grown ReactJSOfficial into an 80,000+ follower developer community.

Experience

Work history, roles, and key accomplishments

Current

Full Stack Developer

Current

Novalyze AI

Apr 2025 - Present (1 year 4 months)

Designed and developed a scalable real-time analytics dashboard using React.js, Next.js, Python, Flask, and Apache ECharts. Built an AI-assisted chat application with WebSocket and implemented secure authentication and RBAC.

React Next.js Python Flask ECharts WebSockets AWS Docker CI CD RBAC

Full Stack Developer

Ment Tech

Aug 2023 - Mar 2025 (1 year 7 months)

Led full stack development of a production-grade product management system in Next.js and Node.js. Optimized application performance, reducing page load times by 25%.

Next.js Node REST APIs Agile Scrum

Front-End Developer

Kellton Tech

May 2022 - Jul 2023 (1 year 2 months)

Launched a high-performance e-commerce platform in React.js and Next.js, increasing user engagement by 20% and reducing load time by 15%. Built reusable UI components and design systems.

React Next.js REST APIs GraphQL Figma Component Libraries

React Developer

Cognizant

Oct 2020 - Jan 2022 (1 year 3 months)

Developed data-driven web applications using React.js, Redux, and JavaScript (ES6+). Built custom dashboards and product tour features, improving client onboarding and adoption.

React Redux JavaScript ES6 Cross Browser Development