Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Hello! I’m Rinku Prajapati, a Senior Mobile Developer focused on designing, developing, and delivering secure, scalable, and high-performance Android applications using Kotlin and Java. I have 7+ years of experience building fintech, retail, and e-commerce apps, with a strong emphasis on secure authentication, performance optimization, automated testing, and CI/CD. I thrive in cross-functional teams, lead architecture discussions, conduct code reviews, mentor engineers, and promote best practices. I enjoy using AI-assisted tools like GitHub Copilot, ChatGPT, and Claude AI to improve productivity and code quality while delivering delightful user experiences.…Hello! I’m Rinku Prajapati, a Senior Mobile Developer focused on designing, developing, and delivering secure, scalable, and high-performance Android applications using Kotlin and Java. I have 7+ years of experience building fintech, retail, and e-commerce apps, with a strong emphasis on secure authentication, performance optimization, automated testing, and CI/CD. I thrive in cross-functional teams, lead architecture discussions, conduct code reviews, mentor engineers, and promote best practices. I enjoy using AI-assisted tools like GitHub Copilot, ChatGPT, and Claude AI to improve productivity and code quality while delivering delightful user experiences.

Rinku Prajapati

App Developer, Full Stack Developer, Back-End Developer, +2





Hello! I’m Rinku Prajapati, a Senior Mobile Developer focused on designing, developing, and delivering secure, scalable, and high-performance Android applications using Kotlin and Java. I have 7+ years of experience building fintech, retail, and e-commerce apps, with a strong emphasis on secure authentication, performance optimization, automated testing, and CI/CD. I thrive in cross-functional teams, lead architecture discussions, conduct code reviews, mentor engineers, and promote best practices. I enjoy using AI-assisted tools like GitHub Copilot, ChatGPT, and Claude AI to improve productivity and code quality while delivering delightful user experiences.…Hello! I’m Rinku Prajapati, a Senior Mobile Developer focused on designing, developing, and delivering secure, scalable, and high-performance Android applications using Kotlin and Java. I have 7+ years of experience building fintech, retail, and e-commerce apps, with a strong emphasis on secure authentication, performance optimization, automated testing, and CI/CD. I thrive in cross-functional teams, lead architecture discussions, conduct code reviews, mentor engineers, and promote best practices. I enjoy using AI-assisted tools like GitHub Copilot, ChatGPT, and Claude AI to improve productivity and code quality while delivering delightful user experiences.

Available to hire

Hello! I’m Rinku Prajapati, a Senior Mobile Developer focused on designing, developing, and delivering secure, scalable, and high-performance Android applications using Kotlin and Java. I have 7+ years of experience building fintech, retail, and e-commerce apps, with a strong emphasis on secure authentication, performance optimization, automated testing, and CI/CD.

I thrive in cross-functional teams, lead architecture discussions, conduct code reviews, mentor engineers, and promote best practices. I enjoy using AI-assisted tools like GitHub Copilot, ChatGPT, and Claude AI to improve productivity and code quality while delivering delightful user experiences.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

Senior Mobile Developer at Bright IT

December 1, 2025 - Present

Led development of scalable Android and React Native applications for fintech and consumer platforms, leveraging Kotlin, Jetpack Compose, React Native, and TypeScript within an MVVM and Clean Architecture framework. Implemented secure authentication (OAuth 2.0, OpenID Connect, JWT), Android Keystore, and biometric authentication. Conducted technical analysis, feature design, and impact assessments; built reusable, testable components following SOLID principles and the Repository pattern. Implemented automated tests (JUnit, Mockito, Robolectric, Espresso) to raise quality and reliability, and optimized startup time, memory usage, and UI performance using Android Profiler and LeakCanary. Integrated RESTful APIs, push notifications, deep links, analytics, and third-party SDKs; ensured robust error handling and offline support. Collaborated with product, design, QA, and backend teams in an Agile Scrum setting; performed peer code reviews, mentored junior developers, and promoted Android en

Senior Mobile Developer at Synerlite

May 1, 2024 - November 1, 2025

Developed and maintained secure Android applications for fintech platforms, delivering high-performance experiences. Implemented secure payment, wallet, and money-transfer features by integrating RESTful payment APIs, OAuth 2.0 authentication, JWT-based authorization, encrypted local storage, and secure transaction workflows. Applied MVVM and Clean Architecture with SOLID principles to ensure maintainable codebases. Used Kotlin Coroutines and Flow for lifecycle-aware asynchronous programming. Collaborated with backend teams, QA, product owners, and designers in an Agile Scrum environment. Debugged production issues, improving stability; conducted peer code reviews and promoted Android coding standards. Optimized network efficiency by reducing API calls and improving UI responsiveness. Created technical documentation to support knowledge sharing and future maintenance.

Android Developer at Tata Consultancy Services (TCS)

July 1, 2022 - April 30, 2024

Developed native Android apps using Kotlin, Jetpack Compose, MVVM, Clean Architecture. Contributed to the TataNeu fintech super app serving 50M+ users. Built secure payment, rewards, and authentication features using OAuth 2.0 and JWT. Migrated legacy XML screens to Jetpack Compose, improving maintainability and UI performance. Implemented Kotlin Coroutines, Flow, and StateFlow for lifecycle-aware asynchronous programming. Integrated RESTful APIs and collaborated with backend teams to deliver scalable mobile features. Increased automated test coverage to 75% using JUnit and Mockito, reducing regression defects. Performed technical analysis, impact assessments, and participated in architecture and design discussions. Conducted peer code reviews and promoted Android development best practices. Optimized application performance, memory usage, and UI responsiveness. Improved CI/CD pipelines, reducing deployment time by 40%. Supported production releases by validating feature branches and c

Android Developer at The One Technologies

September 1, 2021 - July 31, 2022

Developed and maintained Android applications for ecommerce platforms using Kotlin and Java; RanchLife, LakeNona. Built and enhanced apps using MVVM and Android SDK; integrated Firebase services and Google Play Billing for subscriptions; refactored legacy Java code to Kotlin; developed secure business account features; integrated RESTful APIs. Published and maintained multiple applications on Google Play Store. Collaborated with QA and backend teams to deliver high-quality releases in Agile environments.

Android Developer at Hyperlink Info System

August 1, 2020 - September 30, 2021

Developed Android apps using Kotlin for e-commerce platforms; built reusable UI components to improve development efficiency. Integrated Google Maps, social login, analytics, and RESTful APIs. Optimized memory usage and reduced application size by 20%. Collaborated with QA and backend teams to deliver stable releases. Managed source code using Git and participated in peer code reviews.

Android Developer at Everest Instrument

July 1, 2018 - August 31, 2020

Developed Android applications using Java and Kotlin for dairy management solutions. Migrated SQLite databases to Room, improving data management and maintainability. Optimized application performance, reducing APK size by 40%. Integrated RESTful APIs and third-party SDKs including Facebook, LinkedIn, and Google authentication. Collaborated with product, design, and QA teams to deliver reliable mobile applications.