SUMANTA CHATTERJEE
Bishnupur
Summary
To secure a responsible career opportunity into a prestigious organization to utilize my skills and to learn from new huddles from the new role.
Highly organized and hardworking Android Developer with 7-years' experience into core Android Application Development. A team player with capability to adapt into diverse work environments with problem solving attitude. Skilled in Java, Kotlin, Android Jetpack, Compose UI and Android App development. Currently Looking forward to new opportunities and accept challenges into a new role. Intending to make a significant contribution in the open-source platform as an Android Developer while ensuring self-development and growth of the organization.
Overview
9
9
years of professional experience
Work History
Senior Associate
Cognizant Technology Solutions
Kolkata, India
08.2025 - Current
- Led migration of Cash Passport application to Kotlin Multiplatform, enabling shared business logic for Android and iOS.
- Implemented Mastercard APIs integration using KMP shared modules for transaction processing and secure authentication.
- Designed common domain, data, and networking layers with Ktor, Kotlin Coroutines, and StateFlow for platform consistency.
- Refactored legacy Android code into reusable KMP modules, reducing duplication and enhancing maintainability.
- Ensured PCI-DSS compliance in handling sensitive card data through encryption and secure storage mechanisms.
- Integrate the Adobe Analytics API in this project.
- Design the app using Compose UI.
Android Developer (Lead Engineer)
HCL Technologies Ltd
Bangalore
09.2021 - 06.2025
- Company Overview: SAP Concur is a cloud-based service that helps businesses manage their travel, expenses, and invoices. The SAP Concur mobile app allows users to manage their expenses on a business trip.
- Developed Android applications using Java, Kotlin, MVVM, Jetpack, Retrofit, and Compose UI.
- Implemented user interfaces, activities, and services for mobile devices.
- Tested Android application on multiple versions of the platform to ensure compatibility.
- Created reusable components for Android applications to increase development speed.
- Resolved bugs reported by users during testing phase.
- Bug-fixed and improved application performance.
- Debugged code and identified root cause of errors in existing applications.
- Designed custom UI elements for the Android App, utilizing Compose UI.
- Coordinated testing and validation procedures through software development lifecycle.
- Collaborated with backend developers to integrate RESTful APIs into the mobile apps.
- Participated in daily standup meetings with other engineers, QA testers, project managers., to discuss progress updates on current tasks.
- Unit-tested code for robustness, including edge cases, usability, and general reliability.
- Using Git to maintain the different versions, and after review, the code is merged with the main branch.
- SAP Concur is a cloud-based service that helps businesses manage their travel, expenses, and invoices. The SAP Concur mobile app allows users to manage their expenses on a business trip.
Android Developer
Gozo outstation cabs Pvt. Ltd.
Kolkata
11.2019 - 09.2021
- Company Overview: Travel-oriented.
- Using SQLite to handle local DB to store every user event when network is not available.
- Implementation of responsive design to maintain app UI for Mobile and Tab.
- Implementation of third-party login and linking handle to login into App.
- Solving several bugs related to device and implementing new feature.
- Retrieval of user event from DB and conversion of the data into structure and send to server using Retrofit.
- Testing and code optimization.
- Using Firebase Cloud Messaging API to implement push notification and analytics.
- Usage of Google Play services to elevate the app performance with implementation of location services.
- Travel-oriented.
Android Developer
ESolz Technologies Pvt Ltd.
Kolkata
08.2017 - 04.2019
- Company Overview: Home services-based Android app.
- Responsive design for all devices, mobile and tab.
- Using third-party login and linking handle Facebook and Google authentication.
- Using FCM for push notification and handling chat system.
- Integrate PayPal payment gateway.
- Using Google Maps API for map implementation to show user location and other client requirements.
- Home services-based Android app.
Education
MCA -
SDET Brainware Group of institutions
Kolkata01.2017
BCA -
Burdwan Raj college
Burdwan01.2014
XIIth -
Bishnupur K.M High School
Bishnupur01.2011
Xth -
Bishnupur High School
Bishnupur01.2009
Skills
- Android
- C
- C
- XML
- Java
- SQL Lite
- Java SDK design
- Kotlin
- Kotlin Coroutines
- Kotlin Flow API
- Android Development
- Architecture
- MVVM
- Clean Architecture
- Room
- Retrofit
- ktor client
- Android jetpack
- You can edit the content, use other fonts, adjust format, add sections, and change placement of the sections later on
- Firebase
- Dagger Hilt
- Secrets Gradle plugin
- Deep Links
- Postman
- Online Json Viewer
- Swagger
- Git
- Jira
- Google Consol
- Design Patterns
- Different kind of Architecture
- New feature implementation
- Responsive design
- Ui animation
- Graph and chat representation
- Image processing
CUST
- Design Patterns
- SQL Lite
- Different kind of Architecture
- New feature implementation using different kind of third-party integration.
- Responsive design
- Flutter
- React Native
- Ui animation
- Using third-party login and linking handle. Facebook and Google authentication.
- Bug solving and implementing new features.
- Testing and code optimization.
- Using Google Map API to show the user pet sitter location and details.
- Using the Volley Library to connect with backend services.
- Date of birth: 1993-12-14
Timeline
Senior Associate
Cognizant Technology Solutions
08.2025 - Current
Android Developer (Lead Engineer)
HCL Technologies Ltd
09.2021 - 06.2025
Android Developer
Gozo outstation cabs Pvt. Ltd.
11.2019 - 09.2021
Android Developer
ESolz Technologies Pvt Ltd.
08.2017 - 04.2019
MCA -
SDET Brainware Group of institutions
BCA -
Burdwan Raj college
XIIth -
Bishnupur K.M High School
Xth -
Bishnupur High School