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Hi, I'm Sony Johnson, a Mobile Application Developer with 5+ years of experience and a B.Tech in Electronics and Communication Engineering. I specialize in Android (Java/Kotlin) and Flutter development, building intuitive, scalable mobile apps with clean UI/UX and strong API integration. I've led end-to-end app development, from gathering requirements and architecture to publishing apps on Google Play. I thrive in agile teams, collaborating with UI/UX designers and backend engineers to deliver high-quality software on time.…Hi, I'm Sony Johnson, a Mobile Application Developer with 5+ years of experience and a B.Tech in Electronics and Communication Engineering. I specialize in Android (Java/Kotlin) and Flutter development, building intuitive, scalable mobile apps with clean UI/UX and strong API integration. I've led end-to-end app development, from gathering requirements and architecture to publishing apps on Google Play. I thrive in agile teams, collaborating with UI/UX designers and backend engineers to deliver high-quality software on time.

Sony Johnson

App Developer, Developer, Programmer, +4

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Hi, I'm Sony Johnson, a Mobile Application Developer with 5+ years of experience and a B.Tech in Electronics and Communication Engineering. I specialize in Android (Java/Kotlin) and Flutter development, building intuitive, scalable mobile apps with clean UI/UX and strong API integration. I've led end-to-end app development, from gathering requirements and architecture to publishing apps on Google Play. I thrive in agile teams, collaborating with UI/UX designers and backend engineers to deliver high-quality software on time.…Hi, I'm Sony Johnson, a Mobile Application Developer with 5+ years of experience and a B.Tech in Electronics and Communication Engineering. I specialize in Android (Java/Kotlin) and Flutter development, building intuitive, scalable mobile apps with clean UI/UX and strong API integration. I've led end-to-end app development, from gathering requirements and architecture to publishing apps on Google Play. I thrive in agile teams, collaborating with UI/UX designers and backend engineers to deliver high-quality software on time.

Available to hire

Hi, I’m Sony Johnson, a Mobile Application Developer with 5+ years of experience and a B.Tech in Electronics and Communication Engineering. I specialize in Android (Java/Kotlin) and Flutter development, building intuitive, scalable mobile apps with clean UI/UX and strong API integration.

I’ve led end-to-end app development, from gathering requirements and architecture to publishing apps on Google Play. I thrive in agile teams, collaborating with UI/UX designers and backend engineers to deliver high-quality software on time.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Malayalam

Advanced

Work Experience

Mobile Application Developer at HashGate Technology

April 30, 2023 - July 22, 2025

Collaborated with UI/UX designers and backend developers to create seamless user experiences for the e-commerce raffle draw app COPO DEALS. Developed features including product catalogue, shopping cart, order history, checkout flow, wishlist, coupon code, and referral systems. Implemented RESTful APIs, real-time databases such as Firebase and SQLite, third-party SDKs, push notifications, in-app purchases, and payment gateways. Optimized app performance and maintained the app on Google Play Store.

Mobile Application Developer at Infozapp Technologies

July 31, 2021 - July 22, 2025

Designed and developed the full online classroom app CITC CLASSROOM, enabling students and teachers to connect. Maintained app efficiency and wrote clean, maintainable code. Collaborated with design and backend teams to define and ship new features. Implemented RESTful API services, push notifications, and video download services. Published and maintained the app on Google Play Store.

Mobile Application Developer at Xigologix Pvt. Ltd, Technopark

May 31, 2019 - July 22, 2025

Designed and developed MAWAD EXPO, an e-commerce app for construction and maintenance. Worked closely with UI/UX designers and backend developers to create seamless user experiences. Developed efficient, maintainable code. Integrated features like GPS location tracking, polyline, push notifications, OTP generation, and RESTful APIs. Ensured app performance and responsiveness.

Android Developer at Hetnet Technologies Pvt. Ltd

March 31, 2018 - July 22, 2025

Assisted in developing multiple Android apps, focusing on UI/UX design, version control, and app testing. Implemented user interface features and improved app functionality. Performed unit testing and developed bug fixes and new features. Integrated basic APIs for social login and Firebase for real-time database and notifications.

Mobile Application Developer at HashGate Technology

April 30, 2023 - August 28, 2025

Developed COPO DEALS, an e-commerce raffle draw application featuring rich UI and animations. Collaborated with UI/UX designers and backend developers to create seamless user experiences. Built e-commerce features such as product catalog, shopping cart, order history, and checkout flow. Implemented wishlist, coupon codes, referral systems, RESTful APIs, real-time databases, and third-party SDKs. Optimized app performance, integrated push notifications, in-app purchases, and payment gateway. Published and maintained the app on Google Play Store.

Mobile Application Developer at Infozapp Technologies

July 31, 2021 - August 28, 2025

Designed and developed CITC CLASSROOM, an online classroom app connecting students and teachers. Maintained code efficiency and wrote clean, maintainable code. Evaluated and recommended third-party solutions. Ensured app performance, quality, and responsiveness. Collaborated with design and backend teams to define and implement new features. Integrated RESTful API services, push notifications, and video download service. Published and maintained the application on Google Play Store.

Mobile Application Developer at Xigologix Pvt. Ltd, Technopark

May 31, 2019 - August 28, 2025

Developed MAWAD EXPO, an e-commerce application for construction and maintenance. Managed full app development lifecycle and collaborated with UI/UX designers and backend developers for seamless user experience. Delivered efficient, maintainable code while ensuring performance and responsiveness on mobile devices. Integrated RESTful APIs, real-time databases, GPS location tracking, Polyline, push notifications, and OTP generation.

Android Developer at Hetnet Technologies Pvt. Ltd

March 31, 2018 - August 28, 2025

Assisted in the development of several Android apps, focusing on UI/UX design, version control, and app testing. Implemented user interface features, enhanced functionality, and performed unit testing. Developed and deployed app updates including bug fixes and new features. Integrated basic APIs for social login and Firebase real-time database and notification services.

Mobile Application Developer at HashGate Technology

February 29, 2024 - October 3, 2025

Collaborated with UI/UX designers and backend developers to create seamless user experiences. Built e-commerce features: product catalogue, shopping cart, order history, and checkout flow. Implemented wishlist, coupon code, and referral systems to support marketing and user engagement. Implemented RESTful APIs, real-time databases (Firebase, SQLite, etc.), and third-party SDKs. Optimized app performance and published the application on Google Play Store.

Mobile Application Developer at Infozapp Technologies

July 31, 2021 - October 3, 2025

Designed and developed the CITC Classroom online class app, maintaining efficiency and code quality. Integrated restful API services, push notifications, and downloadable video service. Published and maintained the application on Google Play Store; collaborated with design and backend teams to ship new features.

Mobile Application Developer at Xigologix Pvt.Ltd, Technopark

May 31, 2019 - October 3, 2025

Designed and developed an e-commerce based MAWAD EXPO application for construction and maintenance; integrated GPS location tracking, Push Notifications, REST API, SQLite, and OTP.

Android Developer at Hetnet Technologies Pvt.Ltd

March 31, 2018 - October 3, 2025

Analyzed problems and provided solutions. Assisted in the development of Android apps, learning core concepts such as UI/UX design, version control, and testing. Implemented UI features, debug and new features with senior developers; integrated social login and Firebase for real-time database and notifications.