Harsh Prajapati | Software Engineer | MERN & Next.js Developer

What i do.

I’m a Software Developer & Analyst with over 3+ years of professional experience, currently working at Merkle (Dentsu). I specialize in building scalable full-stack web applications using JavaScript, TypeScript, the MERN stack, and Next.js, with a strong focus on clean architecture, APIs, and long-term maintainability.

Alongside application development, I work extensively on analytics engineering, implementing and optimizing GA4, GTM, and GMP APIs to enable accurate data collection and insight-driven decision-making. I am also capable of building AI-ready web applications, integrating LLM-based workflows and modern AI services, and I actively explore new technologies to continuously evolve my skill set.

Javascript (ES6+)
React
NextJS
Typescript

Node
MongoDB
AWS
Google Analytics

Places i’ve worked.

Since 2023, had a privilege to work with several companies that enables me to hone my skills and talents. These companies will always have a special place in my heart. Currently I am working with Merkle.

Software Developer & Analyst#Merkle Adverstising & Analytics

Jun 2023 - Present

Led end-to-end full-stack and analytics implementations using MERN stack and Next.js, delivering scalable web applications with optimized REST APIs, database architecture, and AWS deployments.
Delivered advanced analytics engineering across GA4, GTM, GMP APIs, and media platforms, including audits, custom API-driven integrations, and best-practice enforcement to improve data accuracy and business outcomes.
Built automation scripts using JavaScript and Python for GTM and GA4 data extraction, metric anomaly alerts, and reporting workflows, improving system reliability and operational efficiency.
Provided technical consulting for global clients, implementing tracking architecture, web and mobile tagging, cookie and CSP compliance, and complex integrations—contributing to Merkle’s Analytics Agency of the Year 2024 recognition.

Some of my works.

A selection of production-ready platforms and systems I’ve built across full-stack engineering, analytics, and cloud deployments.

#01 Curiomart

A scalable multi-vendor e-commerce CMS built using the MERN stack. Features include role-based authentication, real-time chat with Socket.IO, Stripe payment integration, and a responsive admin dashboard. Deployed on AWS EC2 for production scalability.

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#02 WealthFox

A production-grade financial advisory platform built with Next.js and Tailwind CSS. Integrated GA4 via GTM, Google Places reviews with MongoDB TTL caching, SEO optimization, and automated lead capture synced with Odoo CRM.

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#03 AgriCom

AgriCom is my final-year BTech project, an information-focused platform for farmers combining agri news, government schemes, learning resources, and IoT insights. Built on the MERN stack with a full admin dashboard and clean, modern UI.

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