RevoTec
IoT home automation app for managing devices on Android and iOS, with ESP32 firmware and Firebase backend work.
View Case StudyKazi Shakib Uddin
Software Engineer
Founder & CEO, Vaizans Tech
Software engineer specializing in mobile application development and IoT systems, including system design, database architecture, and production-issue work.
Five years of professional experience across Flutter, IoT, Android, iOS, and Windows — including ISP, CRM, medical, pharmacy, home-automation, and fire-alert products.
Building mobile and IoT software with a focus on system design, reliable delivery, and production issues.
I am a software engineer with 5 years of experience, specializing in mobile application development and IoT systems.
Professional work has included ISP, CRM, medical, pharmacy SaaS, home-automation, and fire-alert products — typically with Flutter, Firebase, REST APIs, and ESP32 where the product required it.
I currently work as a software engineer at Hasan's IT Solution, across Flutter, IoT, Android, iOS, and Windows.
- 5 Years of experience
- BSc CSE · 2022 – 2025
- Flutter · IoT · Firebase · REST
Selected applications.
BMZ Link
IoT fire-alert device management app for Android and iOS, including ESP32, Firebase, FCM, and BLE.
View Case Study
EasyISP24
Android app for an ISP company, including REST APIs, video streaming, and bKash payments.
View Case Study
CRM Pro
Customer relationship management system for Android and iOS, built with Flutter, REST APIs, and BLoC. A product of Omega Solution.
View Case Study
eLightICG Medical App
iOS app for fluorescence-guided surgeries using NIR devices, with a focus on medical UI for diagnostics.
View Case StudyHow the work is done.
Understand
Clarify the product — ISP operations, CRM, pharmacy SaaS, medical UI, or an IoT device flow — and the services it has to talk to.
Structure
Choose an application structure that fits the project, including GetX, BLoC, Riverpod, MVC, or clean architecture where that is the established pattern.
Build
Implement Flutter screens and business logic across the platforms the product requires.
Connect
Integrate REST APIs, Firebase, payments, FCM, BLE, or ESP32 firmware as the product requires.
Stabilize
Work through production issues so the system stays reliable after it is in use.
From a first Flutter role to current software engineering work.
Junior Mobile Apps Developer (Flutter)
Protibeshi App
Junior Flutter development on the Protibeshi application.
Mobile Apps Developer (Flutter)
DPSSL Tech.
Flutter mobile application development.
Junior Software Engineer (Flutter)
Omega Solution
Junior software engineering on Flutter applications.
Flutter Trainer — Part Time
CSL IT
Part-time Flutter training alongside professional engineering work.
Software Engineer (Flutter, IoT, Android, iOS, Windows)
Hasan's IT Solution
Software engineering across Flutter, IoT, Android, iOS, and Windows.
Core expertise
- Flutter
- IoT systems
- Firebase
- REST API integration
- Android and iOS
Java · C · C++ · JavaScript · PHP · MySQL · Supabase PostgreSQL · Video streaming · Android Studio · VS Code · GitHub
Vaizans Tech
A software company behind the work.
Vaizans Tech is a software company building mobile applications and IoT systems — from architecture and development through production support.
Mobile Apps · IoT · Flutter · Firebase · Android