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 and developed key features using Flutter, Riverpod, and Clean Architecture, contributing to growth to ~50K global users
- AI Intro Video Maker App – Supervised development, guided feature innovation, improved usability, and helped achieve 10K+ downloads
- Employee Management App – End-to-end design and integration with responsive UI, optimized workflows, and scalable architecture
- Vocab AI Flashcard App – Created AI-powered vocabulary learning platform delivering personalized flashcard sets
- Performed market research, competitor analysis, and product optimization to enhance engagement, retention, and user satisfaction
- Collaborated with cross-functional teams on UI/UX improvements, iterative updates, and data-driven decision making
Technologies & Skills
Co-Founder & CTO
Managed all technical operations including website development, SEO optimization, and mobile app development. Built multiple successful applications with thousands of downloads and high user ratings.
Key Achievements
- Waqt App (Native Android) – Built an ad-free prayer app with global Salah tracking, six themes, multilingual support, Dua/Quran, Qibla compass, and smart notifications. Achieved 1200+ downloads with 4.5 rating
- NewsSip App (Flutter) – Developed a news app delivering short, fact-based news and instant breaking news notifications with automated update intervals
- UKGreenLineTravel Web App (WordPress) – Built a web app with PayPal integration for booking rides and ordering services
- Managed all technical operations: website building, fixing issues, and improving SEO
Technologies & Skills
AI Trainer
Specialized in improving machine learning models for Bengali conversation tasks, ensuring accurate and culturally appropriate AI responses. Applied advanced prompt engineering techniques to optimize AI performance.
Key Achievements
- Learned and applied efficient prompt engineering techniques to optimize AI responses
- Improved machine learning models for Bengali conversation tasks, ensuring accurate and context-aware information delivery
- Enhanced AI's ability to serve correct, relevant, and culturally appropriate responses for Bengali-speaking users
- Contributed to quality assurance and data validation processes to refine model performance
Technologies & Skills
Flutter Developer
Developed advanced Flutter applications with machine learning integration and real-time features. Gained experience in industry-standard development practices and agile methodologies.
Key Achievements
- Developed RNNoise machine learning–based noise reduction in Flutter for real-time audio enhancement
- Designed and built a QR & barcode scanner app with Firebase push notifications, cloud backup, and sync, using Flutter and Provider state management
- Learned and applied Jira for task tracking, participated in 1-to-1 meetings, and adapted to industry-standard agile culture
- Gained hands-on experience in mobile app development best practices, clean architecture, and collaborative development workflows
Technologies & Skills
Android Developer
Developed and maintained Android applications with focus on IPTV solutions and booking systems. Managed Google Play Console operations and ensured quality app publishing processes.
Key Achievements
- Integrated in-app subscriptions and Chromecast support into a Java-based IPTV app, enhancing the TV viewing experience
- Designed and developed a room booking app in Kotlin, streamlining reservation management with smooth and intuitive functionality
- Developed SpellX — a voice-based vocabulary spelling checker built with Flutter that lets users hear a word and type its correct spelling for learning and practice
- Managed and maintained Google Play Console account, handling app publishing, updates, and compliance
- Published multiple Android and Flutter apps, ensuring quality assurance, timely delivery, and store optimization
Technologies & Skills
Technical Skills
Design
Development
UX Methods
Soft Skills
© 2025 Muhammad Sajedul Islam. All rights reserved.