About RJS Tech

RJS Tech is a leading product development company based in Kolkata, India. Established in 2001 to provide software development services, we soon after launched our first game—Lexulous. The game received immense popularity on Facebook and quickly amassed a loyal user base of over 10 million players worldwide.

Building upon the success of Lexulous, we launched several other highly popular games, including our Word Search Puzzle Game, which continues to delight players across multiple platforms.

Managing high-volume traffic on our games helped the company gain invaluable expertise in technology scaling and tech-stack selection—skills that are hard to teach or learn through traditional means. This real-world experience of handling millions of concurrent users has shaped our engineering philosophy and technical capabilities.

This expertise naturally led us to launch a services division that serves the high-end technology needs of major ecommerce players across the world. Today, we bring the same rigor, scalability mindset, and technical excellence to every client engagement.

We extended our product portfolio with MyKB.in — an AI-enabled, customizable knowledge base built for teams — and simultaneously grew a services division focused on custom software, starting with ecommerce backend work for external clients. That work eventually led us to build and maintain the complete backend for a national Indian brand in the wellness and food sector (satvicmovement.org), handling order processing from Amazon, Flipkart, and their own website through a unified team workflow — processing thousands of orders daily in production. We now run multiple products across games and SaaS tools, all serving real users at scale. And central to how we operate is working with AI agents as first-class teammates — a practice that has become integral to our workflow and culture.