Teqsonic Corporation Private Limited

Teqsonic Corporation Private Limited is a Kolkata-based software development company that builds systems designed to make business processes easier — helping our clients increase sales, improve productivity, and drive measurable revenue growth through the right software, not just more software.

We specialize in e-commerce and business-process platforms end to end: PHP/Laravel and Node.js/NestJS backends, Flutter and React Native mobile apps, and React/Next.js web storefronts, all backed by MySQL and Redis data layers built to perform under real transaction volume, not just demo traffic. Our work covers the systems that directly affect a business's bottom line — order management and checkout flows, multi-seller marketplace logic, admin panels that stay fast under daily staff use, and mobile apps that keep customers engaged and coming back.

We also modernize existing systems that have started holding a business back: migrating legacy platforms to current frameworks, rebuilding slow or fragile admin panels for speed and stability, and re-architecting APIs for better performance and future scale — all while preserving existing business logic and data, so the transition improves the system without disrupting the business running on it.

Our focus isn't writing code — it's implementing systems that remove friction from how a business actually operates, so growth doesn't get bottlenecked by the software behind it.