I teach developers how to build real things — with real projects, real tools, and no fluff.
Founder of Coding Liquids · Teaching tech to 30K+ learners across 175 countries · Flutter • Excel • AI • Automation
My teaching philosophy is simple: every concept needs a what → why → how breakdown, and every course needs real projects at its core. No toy examples, no hand-waving — just build it.
- 📍 Based in Kolkata, India
- 🎙️ Conducted developer workshops at universities across India (2018–2020)
- 🌍 Students in 175+ countries across all courses
My flagship course — 30,000+ students across 175 countries, one of the best Flutter courses on Udemy. Covers cross-platform mobile app development for Android, iOS, Web, and Desktop using Flutter and Dart.
Topics include: Dart fundamentals, Flutter widgets, state management with Riverpod, navigation with Go Router, local storage with Hive, REST API integration with Dio, MVVM architecture, testing, and CI/CD.
Real-world project: Giggle Grid — a full-featured joke app built from scratch.
A modern, comprehensive Microsoft Excel course for professionals and aspiring data analysts. Covers core Excel fundamentals, advanced formulas, pivot tables, data visualisation, and AI-powered productivity workflows.
Launching mid-2026 on Udemy
Mobile & Cross-Platform Development
Backend, Scripting & Automation
Data & Business Intelligence
Security & Ethical Hacking
DevOps & Infrastructure
Companion code for my Udemy courses — clone, explore, and build on top of these.
| Repo | Course | What it covers |
|---|---|---|
giggle_grid |
Flutter | Chuck Norris API · Dio · Hive · Riverpod · MVVM · Go Router |
money_control |
Flutter | Budget tracking app · Flutter fundamentals |
navigations_complete |
Flutter | Deep-dive into Flutter navigation patterns |
budget_app_complete_project |
Flutter | Full budget app · state management |
I'm available for corporate training and technical consulting — primarily in Flutter, mobile architecture, and Python.
📬 sagnikbhattacharya.com · codingliquids.com