Menu
Muhammad Sajedul Islam
Software Engineer & Product Manager
About Me
I'm a passionate Software Engineer and Product Manager with expertise in mobile app development, particularly Flutter and Android. I've contributed to apps with 50K+ users globally and have experience leading technical operations and product development from concept to deployment.
Professional Focus
Building scalable mobile applications with Flutter and Android
Leading product development and technical operations
Creating user-centered solutions with clean architecture patterns
Experience
Software Engineer
Leading development of enterprise-level mobile applications with focus on e-commerce platforms, financial management solutions, and healthcare applications. Progressed from Junior Software Engineer to Software Engineer, designing and implementing scalable architectures using Flutter and Clean Architecture patterns.
Key Achievements
- Designed and developed CareXpert, an e-commerce platform with post feeds, service booking, and service provider apps, using Flutter and Clean Architecture
- Developed and maintained Amar Khata, a Flutter app for draft calculations and financial management
- Contributed new features to Treatment Diary — a medical student LMS and prescription app — improving functionality and user experience
- Integrated offline mode to allow full app functionality without internet connectivity
- Developed and designed Grameen School LMS app (1K+ downloads) using Flutter, GetX and integrated SSLCommerz payment gateway
- Built Deshi — a location-based e-commerce app for buying/selling, from design to deployment with scalable architecture
- Contributed features to StartWish App — users can find celebrities by category, view bios and schedules, book appointments, create favorite lists, and manage profiles with full app support
- Added features to Service Caller App — a service booking and chat platform supporting multiple service types
Technologies & Skills
Junior Product Manager
Managed product development lifecycle for multiple mobile applications, contributing to apps with 50K+ global users. Led cross-functional teams and performed market research to drive product optimization and user engagement.
Key Achievements
- OneIELTS App – Designed product features and guided Flutter development, contributing to growth to ~50K global users
- AI Intro Video Maker App – Supervised development, guided feature innovation, and improved usability, achieving 10K+ downloads
- Employee Management App – Planned system workflows, feature scope, and UI structure
- Vocab AI Flashcard App – Defined AI-powered learning flows and personalization logic
- Performed market research, competitor analysis, and product optimization
- Collaborated with design and engineering teams on UI/UX and iterative releases
Technologies & Skills
Co-Founder & CTO
Managed all technical operations including mobile app development, website development, payment integration, and SEO optimization. Built multiple production-ready applications with real users.
Key Achievements
- Waqt App (Native Android) – Built an ad-free prayer app with Salah tracking, Qibla, Dua, Quran, multilingual support, and smart notifications (1200+ downloads, 4.5★)
- NewsSip App (Flutter) – Developed short-form news app with breaking news notifications and automated updates
- UKGreenLineTravel Web App – Built WordPress-based booking system with PayPal payment integration
- Handled full technical ownership including app publishing, bug fixes, and SEO improvements
Technologies & Skills
AI Trainer
Worked on improving AI conversational quality for Bengali language tasks through prompt optimization and data validation.
Key Achievements
- Applied prompt engineering techniques to improve AI response quality
- Enhanced Bengali conversational accuracy and cultural relevance
- Validated and refined AI-generated outputs for correctness and clarity
- Contributed to data quality and evaluation workflows
Technologies & Skills
Flutter Developer
Developed Flutter applications with real-time features and machine-learning-based audio processing while following agile development practices.
Key Achievements
- Implemented RNNoise-based noise reduction for real-time audio processing in Flutter
- Built QR & barcode scanner app with Firebase notifications and cloud sync
- Used Jira for task tracking and participated in agile team workflows
- Applied clean architecture and Flutter best practices in production apps
Technologies & Skills
Android Developer
Developed Android and Flutter applications including IPTV and booking systems, and managed Google Play publishing workflows.
Key Achievements
- Integrated subscriptions and Chromecast support into a Java-based IPTV app
- Developed room booking app using Kotlin with smooth reservation flows
- Built SpellX, a voice-based vocabulary spelling checker app
- Managed Google Play Console publishing, updates, and compliance
Technologies & Skills
Technical Skills
Design
Development
UX Methods
Soft Skills
© 2025 Muhammad Sajedul Islam. All rights reserved.