Hi, I'm Mohammad Qasim Senior Android & Mobile Application Developer
I am a Senior Mobile App Developer with 7+ years of experience engineering production-ready Android and cross-platform mobile apps. Specialized in Kotlin, Java, Flutter, Jetpack, MVVM architecture, Firebase, RESTful APIs, payment integrations, and performance optimization for high-scale apps.
Architecting High-Performance Mobile Experiences
Senior Mobile Application Developer with 7+ years of expertise in native Android (Java, Kotlin) and cross-platform Flutter (Dart) development.
Experienced across the complete mobile software lifecycle—from application architecture design and dynamic responsive UI development to REST API backend integrations, Firebase cloud services, real-time push messaging, payment gateway workflows, third-party SDK maintenance, unit debugging, performance optimization, and Google Play Store / Apple App Store publishing.
Clean Architecture & MVVM
Strict adherence to MVVM, MVC, MVP patterns, clean code principles, Jetpack, and modular code structures.
Full Lifecycle & Deployment
End-to-end experience with Play Console publishing, App Store deployment, update releases, and post-launch maintenance.
AI & Modern Mobile Stack
Exploring and integrating OpenAI APIs, Firebase AI services, ChatGPT API tools, and smart API features into mobile applications.
Optimization & Reliability
Focusing on low-latency API handling, smooth layout rendering, memory leak prevention, and robust error handling.
Core Skills & Engineering Capabilities
Comprehensive toolkit spanning native Android, Flutter, backend APIs, and mobile DevOps.
Mobile Development
Cross-Platform
Architecture & Engineering
APIs & Integrations
Firebase & Backend
Database & Storage
Tools & Deployment
Modern Mobile & AI Integration
Selected Mobile Applications
Production applications engineered across travel, live streaming, loyalty, e-commerce, and ride-hailing.
Travello — Travel Clinic
Tour management application designed for corporate employee travel administration.
Key Contributions:
- Developed dynamic tour management functionality for travel itineraries.
- Implemented user-friendly corporate dashboards and expense views.
- Integrated REST APIs with low-latency JSON response parsing.
- Integrated Firebase Cloud Messaging (FCM) push notifications.
AVM Lite
Interactive live streaming mobile app focused on real-time creator and user engagement.
Key Contributions:
- Developed live streaming core architecture and video feed handlers.
- Implemented real-time creator-user interaction features (live chat, likes, reactions).
- Designed responsive user interfaces with low-lag UI rendering.
- Managed Play Store deployment, app maintenance, and build optimizations.
Honda Joy Club
Customer loyalty and rewards application for official Honda vehicle owners.
Key Contributions:
- Implemented user registration, profile management, and authentication flows.
- Developed reward points engine, tier redemption, and coupon modules.
- Implemented service booking and vehicle maintenance schedule management.
- Integrated insurance details and customer support helpdesk modules.
Winkel
Full-featured mobile e-commerce shopping app with seamless checkout and payment flows.
Key Contributions:
- Developed intuitive e-commerce interfaces, product catalogs, and cart handling.
- Integrated secure payment gateway processing workflows.
- Integrated REST APIs for product feeds, user auth, and order tracking.
- Handled third-party analytics and UI customization.
G1 Cabs
Cab booking mobile application equipped with real-time GPS ride tracking.
Key Contributions:
- Developed cab booking workflow, pickup/drop location pickers, and trip estimates.
- Implemented real-time GPS ride tracking with map location updates.
- Integrated in-app payment systems and digital fare breakdown.
- Optimized application battery usage and responsiveness during active navigation.
Professional Experience
7+ years of progressive engineering roles in high-velocity tech teams.
Android & Flutter Developer
- Develop and maintain scalable Android and Flutter applications for enterprise and customer-facing products.
- Implement payment gateway integrations, Firebase services, push notifications, and real-time backend APIs.
- Design modular reusable UI components and optimize app performance and rendering efficiency.
- Manage end-to-end application publishing and version updates on Google Play Store and Apple App Store.
- Collaborate with backend engineering teams for REST API contracts, authentication, and deployment cycles.
- Enforce MVVM architecture and clean coding standards across codebase iterations.
Android Developer
- Developed multiple commercial Android applications using Java and Kotlin.
- Implemented REST API integrations, payment systems, and Firebase authentication protocols.
- Engineered dynamic user interfaces and improved overall application responsiveness.
- Worked on live streaming, cab booking (G1 Cabs), and e-commerce (Winkel) applications.
- Handled Google Play Store publishing, bug resolution, and client application maintenance.
Android Developer
- Developed native Android applications utilizing Java and Kotlin.
- Collaborated closely with project managers, UI designers, and backend teams.
- Implemented JSON APIs, third-party libraries, and modern Android UI components.
- Worked on mobile application architecture, bug fixing, and continuous feature enhancements.
Key Engineering Expertise
- Native Android (Java, Kotlin) & Cross-Platform (Flutter, Dart) execution.
- RESTful API integration, JSON serialization/deserialization, & network handling.
- Firebase Auth, Realtime DB, Cloud Firestore, & FCM Push Notifications.
- Secure Payment Gateway workflows & transaction processing.
- Responsive Mobile UI development & custom reusable UI widgets.
- Performance profiling, memory leak detection, & memory tuning.
Deployment & Production Lifecycle
- Google Play Store app publishing & production releases.
- Apple App Store deployment management.
- App bundle versioning, release signing, & update distribution.
- Production bug triage, patch deployment, & live crash monitoring.
- API contract testing & backend API coordination.
- Third-party SDK maintenance & library updates.
Education
Bachelor of Technology (B.Tech)
Key Achievements
- Successfully delivered multiple Android & Flutter apps for enterprise and client projects.
- Published and maintained apps on Google Play Store and Apple App Store.
- Improved app response speed & user satisfaction via code refactoring.
- Integrated modern AI-powered features & OpenAI APIs into mobile projects.
Let's Build Impactful Mobile Applications Together
Seeking senior roles in Android Development, Flutter Development, or Mobile Application Architecture. Feel free to reach out directly via email, phone, or LinkedIn.
Target Roles:
Senior Android Developer • Senior Mobile Application Developer • Android Kotlin Developer • Flutter Developer