Founder of Coding Liquids and top-rated Udemy instructor — teaching Flutter, Dart, Python, and Excel to 30,000+ developers across 174 countries. Previously consulted for Tata Digital.
I'm Sagnik Bhattacharya — founder of Coding Liquids, top-rated Udemy instructor, and tech consultant based in Kolkata, India. I started Coding Liquids in 2018 with a simple idea: programming education should be hands-on, project-driven, and grounded in industry standards.
My Flutter course on Udemy has reached over 30,000 students across 174 countries, and has been recognized as one of the best Flutter courses online. I've also consulted for companies like Tata Digital, helping teams build and ship production-grade Flutter applications.
I focus on the what, why, and how — because understanding the reasoning behind the code matters just as much as writing it. Whether it's Flutter, Dart, Python, or Excel with AI, every course I create is packed with real-world projects and ninja challenges.
Hands-on, project-based courses designed to take you from fundamentals to production-ready skills. No fluff — just real code and real applications.
The most comprehensive, industry-oriented Flutter course online. Master layouts, animations, Riverpod, Firebase, design patterns, and build production-grade apps from scratch. 30,000+ students enrolled.
Master the Dart programming language from scratch. Covers OOP, async programming, collections, generics, and everything you need before diving into Flutter.
From beginner to advanced Excel workflows, supercharged with AI integration. Learn formulas, pivot tables, data analysis, and how AI tools can automate your spreadsheet work.
Whether you need hands-on development, team upskilling, or strategic tech guidance — I bring real-world experience to every engagement.
Tailored workshops for development teams — from Flutter fundamentals to advanced architecture and deployment. Previously delivered training for Tata Digital and multiple enterprises across India.
End-to-end mobile and web app development using Flutter. Clean architecture with Riverpod, Firebase integration, thorough testing, and deployment-ready builds for Android, iOS, and web.
Strategic guidance on tech stack selection, app architecture, DevOps pipelines, and development best practices. Helping startups and enterprises make the right technical decisions from day one.
Whether you're looking for a training partner, a consultant, or just want to chat about tech — I'd love to hear from you.