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I am a full-stack mobile application developer with more than eight years of experience building high-performance Android, iOS, Flutter, and React Native applications. I have delivered production apps for fintech, healthcare, e-commerce, telecommunications, logistics, wellness, and social media, including solutions serving more than one million monthly users. I enjoy turning business requirements into scalable, secure, and user-friendly products. My experience includes mobile architecture, RESTful and event-driven APIs, BLE device integration, eSIM provisioning, real-time communication, payments, cloud services, CI/CD, and technical leadership. I also use AI-assisted development tools such as Cursor, Claude Code, GitHub Copilot, ChatGPT, and Gemini to improve productivity and code quality.…I am a full-stack mobile application developer with more than eight years of experience building high-performance Android, iOS, Flutter, and React Native applications. I have delivered production apps for fintech, healthcare, e-commerce, telecommunications, logistics, wellness, and social media, including solutions serving more than one million monthly users. I enjoy turning business requirements into scalable, secure, and user-friendly products. My experience includes mobile architecture, RESTful and event-driven APIs, BLE device integration, eSIM provisioning, real-time communication, payments, cloud services, CI/CD, and technical leadership. I also use AI-assisted development tools such as Cursor, Claude Code, GitHub Copilot, ChatGPT, and Gemini to improve productivity and code quality.

Sadaf Khowaja

Web Developer, Full Stack Developer, Back-End Developer, +4

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I am a full-stack mobile application developer with more than eight years of experience building high-performance Android, iOS, Flutter, and React Native applications. I have delivered production apps for fintech, healthcare, e-commerce, telecommunications, logistics, wellness, and social media, including solutions serving more than one million monthly users. I enjoy turning business requirements into scalable, secure, and user-friendly products. My experience includes mobile architecture, RESTful and event-driven APIs, BLE device integration, eSIM provisioning, real-time communication, payments, cloud services, CI/CD, and technical leadership. I also use AI-assisted development tools such as Cursor, Claude Code, GitHub Copilot, ChatGPT, and Gemini to improve productivity and code quality.…I am a full-stack mobile application developer with more than eight years of experience building high-performance Android, iOS, Flutter, and React Native applications. I have delivered production apps for fintech, healthcare, e-commerce, telecommunications, logistics, wellness, and social media, including solutions serving more than one million monthly users. I enjoy turning business requirements into scalable, secure, and user-friendly products. My experience includes mobile architecture, RESTful and event-driven APIs, BLE device integration, eSIM provisioning, real-time communication, payments, cloud services, CI/CD, and technical leadership. I also use AI-assisted development tools such as Cursor, Claude Code, GitHub Copilot, ChatGPT, and Gemini to improve productivity and code quality.

Available to hire

I am a full-stack mobile application developer with more than eight years of experience building high-performance Android, iOS, Flutter, and React Native applications. I have delivered production apps for fintech, healthcare, e-commerce, telecommunications, logistics, wellness, and social media, including solutions serving more than one million monthly users.

I enjoy turning business requirements into scalable, secure, and user-friendly products. My experience includes mobile architecture, RESTful and event-driven APIs, BLE device integration, eSIM provisioning, real-time communication, payments, cloud services, CI/CD, and technical leadership. I also use AI-assisted development tools such as Cursor, Claude Code, GitHub Copilot, ChatGPT, and Gemini to improve productivity and code quality.

Skills

Experience Level

Expert

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Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Senior Mobile App Developer at DevConst Pvt Limited

November 1, 2025 - Present

Designed, developed, and maintained more than 10 native iOS and cross-platform Flutter applications across fitness, e-commerce, logistics, wellness, and utility domains. Integrated health sensors, pedometer APIs, GPS activity tracking, geolocation, RevenueCat, Stripe, Firebase services, WebSockets, Socket.IO, Google Maps, and RESTful APIs. Built Flutter Web administration panels with Syncfusion grids and charts, managed GitHub and GitHub Actions workflows, and collaborated with design, backend, QA, and product teams from requirements through post-release support.

Team Lead Mobile Applications at Zencloud Technologies

March 1, 2025 - Present

Delivered 15+ cross-platform mobile applications across e-commerce, fintech, healthcare, telecom, and social media domains, serving 1M+ MAU with 98%+ crash-free rates. Led end-to-end project lifecycle from requirements to production, managed client relationships, and translated business needs into scalable technical solutions. Implemented real-time chat systems with WebSockets, offline-first architecture with SQLite, video processing with queue management, and dynamic eSIM provisioning. Mentored development teams on Flutter best practices, state management patterns (GetX, BLoC), and established comprehensive code review processes to ensure maintainable, production-ready codebases.

Team Lead Mobile Applications at Webrange Solutions

June 1, 2022 - February 1, 2025

Architected and delivered cross-platform mobile solutions using Flutter for Android and iOS, transforming business requirements into technical specifications. Led end-to-end project lifecycle from discovery through production deployment, managing direct client relationships and requirement elicitation. Optimized application performance through proactive monitoring, championed agile methodologies with sprint planning and retrospectives. Contributed expertise across e-commerce, fintech, healthcare, and logistics sectors with comprehensive database administration and QA coordination.

Senior Software Engineer at Azimut Labs (Wavetec)

June 1, 2022 - October 10, 2025

Designed and developed high-performance self-service kiosk applications for banking and telecommunications sectors, serving over 1 million users monthly with enhanced reliability and speed. Implemented advanced technologies like gRPC, RxJava, and Dagger2, achieving up to 30% faster application performance and reducing system downtime. Collaborated directly with clients for on-site system integration, ensuring seamless deployment, and contributed to front-end development using Angular, improving user interface for Windows-based applications.

Manager Software Development (AVP) at Bank Alfalah

June 1, 2022 - Present

Led end-to-end development of advanced mobile applications for self-service kiosks, digital locker systems, and transaction monitoring portals, achieving a 20% improvement in system performance and reducing downtime by 15%. Implemented payment solutions using in-app purchases and third-party gateways like Stripe, ensuring secure and seamless transaction experiences across Android, iOS, and web platforms. Streamlined development processes by adopting Agile and Scrum methodologies, resulting in a 25% increase in project delivery speed while maintaining high-quality standards through optimized code architecture (MVVM, MVC).

Senior Mobile Application Developer at Sapphire Consulting Services

November 1, 2020 - November 8, 2020

Developed and launched 15+ custom Android applications from scratch, leading projects from concept to delivery, ensuring on-time completion and robust functionality. Improved app performance by 25% by optimizing Android API integrations and SQL database structures, enhancing user experience and reducing load times. Led a team of 5 developers to deliver high-quality projects, introduced Flutter for cross-platform app development, and successfully deployed 3 multi-platform apps within tight deadlines.

Senior Software Engineer (Team Lead) at Sapphire Consulting Services

March 1, 2018 - June 1, 2022

Engineered native Android applications using Java/Kotlin with advanced SDK integration, REST APIs, Google Maps, Firebase services, and SQLite database management. Pioneered adoption of Flutter for cross-platform development, reducing development time by 40% while maintaining native performance standards. Led technical decision-making on architecture patterns (MVVM, Clean Architecture), implemented RxJava for reactive programming, and optimized application performance using Dagger2 dependency injection.

Education

Bachelor of Science, Information Technology at University of Sindh

January 1, 2014 - January 1, 2017

Bachelors in Information Technology at University of Sindh Jamshoro

January 11, 2030 - December 8, 2025

Bachelor of Information Technology at University of Sindh Jamshoro

January 11, 2030 - December 8, 2025

Bachelor of Science in Information Technology at University of Sindh Jamshoro

January 11, 2030 - February 3, 2026

Bachelor of Science in Information Technology at University of Sindh Jamshoro

January 11, 2030 - August 26, 2026

Qualifications

Android Developer

January 1, 2017 - October 10, 2025

Java Developer (Sololearn)

January 1, 2017 - October 10, 2025

Android Developer Certification

January 1, 2017 - December 8, 2025

Java Developer Certification

January 1, 2017 - December 8, 2025

Android Developer

January 1, 2017 - December 8, 2025

Java Developer

January 1, 2017 - December 8, 2025

Android Developer Certification – Gexton Education

January 1, 2017 - February 3, 2026

Java Developer Certification – SoloLearn

January 1, 2017 - February 3, 2026

Industry Experience

Financial Services, Telecommunications, Software & Internet, Professional Services, Healthcare, Media & Entertainment, Retail, Computers & Electronics, Transportation & Logistics