Abu Sayed
Abu Sayed Chowdhury
Senior Software Specialist
5+ years of Flutter expertise • 20+ successful mobile apps • Technical mentor
20+
Apps Delivered
5+
Years Experience
200K+
Users Served
15+
Team Members Mentored
About Me
Passionate Senior Software Specialist with 5+ years of expertise in Flutter development, mobile app architecture, and technical leadership. I've successfully delivered 20+ high-performance applications serving over 200,000 users across Android and iOS platforms.
My expertise spans scalable mobile architectures, CI/CD pipeline optimization, secure API integrations, and team mentorship. I'm particularly passionate about clean code, performance optimization, and building products that make a real impact on users' lives.
Dhaka, Bangladesh
Available for opportunities
20+
Apps Delivered
5+
Years Experience
200K+
Users Served
15+
Team Members Mentored
Professional Experience
Senior Software Specialist
SSL Wireless
March 2021 – Present
Dhaka, Bangladesh
- Took ownership of the development process and led sessions for 300+ colleagues focusing on Flutter and AI Development.
- Led development of 15+ Flutter applications with 100% on-time delivery and zero critical bugs in production
- Architected scalable mobile solutions serving 200K+ users across Android and iOS platforms
- Improved API response times by 30% through optimized REST and GraphQL integration patterns
- Mentored and upskilled a team of 15 developers on advanced state management and bloc architecture
- Established CI/CD pipelines reducing deployment time from 2 hours to 15 minutes
- Led technical interviews and contributed to hiring 5 new developers
Software Engineer
Appbd
Nov 2020 – March 2021
Dhaka, Bangladesh
- Skilled in implementing the Model-View-Controller (MVC) pattern using GetX for optimized app structure and maintainability.
- Proficient in integrating various Firebase services, including database, storage, Crashlytics, Analytics, Firebase Messaging, local notifications, and push notifications for Android and iOS.
- Utilized custom painters with animation to create engaging user interfaces and enhanced user experience.
- Skilled in utilizing animation and animated widgets to create dynamic and responsive interfaces, improving the app's overall aesthetic and usability
Mobile Application Developer
RingerSoft Limited
March 2020 – Oct 2020
Chattogram, Bangladesh
- Experienced in developing school management and E-commerce apps, ensuring efficient functionality and user experience.
- Successfully developed an E-commerce app using Flutter and Provider state management, meeting a tight project schedule and delivering a high-quality product.
- Proficient in Android Studio and Java, utilizing these tools to develop robust and efficient applications with optimized code.
- Skilled in deploying apps on Play Store, ensuring proper app store guidelines are met and the app is easily accessible to users.
Featured Projects
Othership Workplace Scheduler
Enterprise2023
Enterprise-grade booking and scheduling platform for meeting rooms, desks, and workspaces with real-time availability.
Improved workspace utilization by 40%
FlutterBlocREST APIFirebase
View ProjectOthership Room Display
Enterprise2024
KIOSK application developed with Bloc for managing meeting room schedules and display systems.
Streamlined room management
FlutterBlocKIOSKReal-time
View ProjectOthership Visitor Management
Enterprise2025
KIOSK application developed with Bloc for managing visitor schedules and display systems.
Streamlined visitor management
FlutterBlocKIOSKReal-time
View ProjectmyBKB app
FinTech2025
myBKB app is a mobile application developed using Flutter that provides a secure mobile banking application with biometric authentication, transaction history, and seamless API integration.
Processed $1M+ in transactions
FlutterFirebaseAPI Integration
View ProjectMagpie Banking
FinTech2023
Secure mobile banking application with biometric authentication, transaction history, and seamless API integration.
Processed $2M+ in transactions
FlutterSecurityREST APIBiometrics
View ProjectBDTax
Government2023
Government tax filing application simplifying compliance for taxpayers in Bangladesh with automated calculations.
Served 50K+ taxpayers
FlutterGovernment APIPDF Generation
View ProjectFlutter_sslcommerz
Open Source2022
Open-source Flutter payment gateway package published on pub.dev, enabling secure payment processing.
500+ pub.dev downloads
FlutterPayment GatewayDart Package
View ProjectDesco Utility App
Utility2023
Utility service application for electricity bill payments, account management, and usage tracking.
20K+ downloads
FlutterPayment IntegrationCharts
View ProjectSSL_CLI
DevTools2022
Command-line tool for automating Flutter project setup, module generation, and APK delivery via Telegram bot.
Reduced setup time by 70%
DartCLIAutomationTelegram Bot
View ProjectAkij Cement CRM
Enterprise2023
CRM application with polished UI, enhancing client interactions and productivity for Akij Cement.
Enhanced client productivity
FlutterCRMAnalyticsUI/UX
View ProjectRebella (ARFace App)
AR/VR2022
Augmented reality-based face detection application for Android and iOS platforms.
Innovative AR experience
FlutterARFace DetectionCamera
View ProjectEmployee Buddy
Enterprise2021
Employee management application available on Android and iOS to enhance team collaboration.
Enhanced team collaboration
FlutterTeam ManagementCollaboration
View ProjectDisaster Alert for BD
Utility2024
Disaster Alert for BD is a SwiftUI app that provides real-time updates on natural disasters in Bangladesh. The app uses Core Data to store user preferences and disaster alerts, and integrates with a REST API to fetch the latest disaster information.
Enhanced team collaboration
SwiftUICoreDataAPI Integration
View ProjectBDHonda+
Utility2024
Develop using Flutter to enhance user experience for Honda bikers.
Enhanced user experience
FlutterFirebaseAPI Integration
View ProjectPay By Link (PBL)
FinTech2022
Develop using Flutter to provide a seamless payment experience for users.
Enhanced user experience
FlutterFirebaseAPI Integration
View ProjectBOnline for Merchants
FinTech2022
Develop using Flutter to provide a merchant of GMS can manage their live transactions, orders, and customers.
Enhanced user experience
FlutterFirebaseAPI Integration
View ProjectTechnical Expertise
Mobile Frameworks
FlutterSwiftUI
Programming Languages
DartSwiftPython
State Management
RiverpodBlocGetXProvider
Databases
SQLiteHiveFirebaseObjectBox
CI/CD & DevOps
GitHub ActionsBitbucket PipelinesCodemagic
AI IDE & Tools
WindsurfCursorv0MCPNoteBookLMGamma
Certifications & Education
Education
M.Sc. in Computer Science
Jahangirnagar University, Bangladesh
2020 – 2022CGPA: 3.63/4.0
B.Sc. in Computer Science
Bangladesh Army International University of Science and Technology
2016 – 2020CGPA: 3.87/4.0
Professional Certifications
Unit 1: Foundations of Agents
Hugging Face
March 2025Verified
View CertificateBuild Apps with Windsurf’s AI Coding Agents!
DeepLearning.AI
March 2025Verified
View CertificateIntroduction to iOS Mobile Application Development
Meta via Coursera
March 2024Verified
View CertificateGoogle Cybersecurity Certificate
Google via Coursera
November 2023Verified
View CertificateIntroduction to Flutter Development using Dart
The App Brewery
March 2020Verified
View CertificateNeural Networks and Deep Learning
deeplearning.ai via Coursera
December 2019Verified
View CertificateNatural Language Processing in TensorFlow
deeplearning.ai via Coursera
October 2019Verified
View CertificateLet's Build Something Amazing Together
Ready to bring your mobile app vision to life? I'm passionate about creating exceptional Flutter applications that deliver real value to users. Let's discuss your project!