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Kazi Shakib
@kazi_sakib_56
Level 1
IoT and Embedded Systems Engineer ESP32 MQTT Flutter AWS BLE
Bangladesh
English
About me
I am a professional Mobile Apps Developer, IOT expert and Software Engineer with 4+ years of experience building production-ready smart device solutions and mobile applications.
I specialize in designing complete IoT ecosystems including:
• ESP32 / Arduino firmware development (C/C++)
• MQTT-based real-time device communication
• BLE (Bluetooth GATT) provisioning and control
• Secure OTA firmware update implementation
• FreeRTOS task management & performance optimization
• AWS / Firebase cloud integration
• Flutter mobile apps (Android & iOS)
• Web dashboards & backend integration
Skills
Kazi Shakib
$20/hour
Offline •
Average response time: 1 hour
See my services
Cross-Platform Development
I will develop iot app using ble flutter, esp32, firebase, mqtt
Cross-Platform Development
I will develop android and ios mobile apps using flutter
Want to work on an hourly basis?
Tell Kazi Shakib what you need.
$20
/
hourPortfolio
Work experience
Software Engineer – IoT & Mobile Systems
Hasans IT Solution • Full-time
Jul 2023 - Dec 2025 • 2 yrs 5 mos
• Developed ESP32-based IoT firmware with MQTT and cloud integration • Implemented BLE provisioning systems for device onboarding • Designed Flutter mobile apps for smart device control • Integrated AWS, Firebase, and VPS-hosted backends • Built production-ready home automation and monitoring systems • Optimized FreeRTOS task handling for stability and performance
23 Reviews
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
1-5 out of 23 Reviews
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Most relevant
mahasolaiman
Repeat Client
Saudi Arabia
Excellent work and a very smooth experience overall. The freelancer demonstrated strong technical skills, clear understanding of the requirements, and great attention to detail. Communication was professional and timely throughout the project.
Helpful?
mahasolaiman
Repeat Client
Saudi Arabia
He was highly professional, detail-oriented, and exceeded expectations throughout the project. Communication was always quick and clear, and the work was delivered with excellent quality and attention to detail. The project was bug-free, well-documented, and showed strong technical expertise and cooperation.
Helpful?
jerome_gg
Repeat Client
China
Kazi delivered a suction with a full scope, he has knowledge in various fields which make it easy for the interfaces between different components. He was always very supportive and quick to answer and apply some modifications. I will work with him again!
Helpful?
jerome_gg
Repeat Client
China
Very good work done by Kazi, I really appreciated his communication and clarifying together the specification and deliverable to establish a good cost for the project and make sure we are aligned before starting. Very professional. Kazi sent some regular updates during the project. Definitely recommend!
Helpful?
mahasolaiman
Repeat Client
Saudi Arabia
Thank you for your great effort and professionalism. I truly appreciate your work and support. It was a pleasure working with you.
Helpful?
