![Abidullah Bin Junaid](https://jobicy.com/react/themes/app/images/avatar.jpg) Abidullah Bin Junaid # Senior Android Engineer Actively looking · Member since 12 Sep 2025 [Message](https://jobicy.com/dashboard-page.md) ShareLocationUnited StatesDesired salaryfrom 65 USD/hourlyWork preferenceFull TimeExperience levelNot set * [Overview](#overview) * [Portfolio 0](#portfolio) * [Services 0](#services) ## About Professional summaryI am an experienced Android Developer with over 10 years of expertise in building and deploying both enterprise and consumer applications. My proficiency lies in Kotlin, Java, Jetpack Compose, RESTful APIs, and integrating third-party services such as Twitter, Facebook, and Google Maps. I have a strong background in SQL/SQLite databases, debugging, and testing methodologies including TDD, unit, and integration testing, covering the full software development lifecycle. Throughout my career, I have worked extensively with build tools like Gradle and Maven, Python scripting, and have experience publishing apps on Google Play. I am known for my problem-solving skills, performance tuning capabilities, and my ability to thrive in both fast-paced team environments and independent roles. I have held senior engineering roles at major companies such as Meta, FedEx, Cigna, HEB, and Marriott, where I contributed to enhancing large-scale Android codebases, building automated refactoring tools, designing optimized databases, and ensuring code quality through rigorous reviews and testing. I am also experienced in backend development using Java Spring Boot and have collaborated cross-functionally with product, design, QA, and clients to deliver high-quality digital experiences. My technical expertise extends to Android tools and IDEs including Android Studio, Eclipse, and XCode, as well as version control systems like Git, SVN, and Mercurial. I am well-versed in architectural patterns such as MVVM and MVP, and have supported CI/CD pipelines using Jenkins. I am committed to maintaining high standards of code quality, security, scalability, and performance in all projects I undertake. I hold an MBA in Computer Science from the University of the Cumberlands and a Master of Science in Computer Science from Kent State University. I continuously seek to provide strategic engineering guidance and improve technology standards and processes within teams and organizations. ## Skills 16 capabilities[Agile](https://jobicy.com/talent/agile.md)[Android Studio](https://jobicy.com/talent/android-studio.md)[Apache Maven](https://jobicy.com/talent/apache-maven.md)[CI CD](https://jobicy.com/talent/ci-cd.md)[Git](https://jobicy.com/talent/git.md)[Java](https://jobicy.com/talent/java.md)[Junit](https://jobicy.com/talent/junit.md)[Kotlin](https://jobicy.com/talent/kotlin.md)[MySQL](https://jobicy.com/talent/mysql.md)[Oracle](https://jobicy.com/talent/oracle.md)[Postman](https://jobicy.com/talent/postman.md)[Spring Boot](https://jobicy.com/talent/spring-boot.md)[SQL](https://jobicy.com/talent/sql.md)[SQL Server](https://jobicy.com/talent/sql-server.md)[TDD](https://jobicy.com/talent/tdd.md)[Testing](https://jobicy.com/talent/testing.md) ## Experience Career history ### Sr. Android Engineer · Meta, TX Sept 2024 – PresentEnhanced large-scale Android codebases using Kotlin, Java, and Jetpack Compose, ensuring performance, scalability, and maintainability. Built automated code refactoring tools with Buck, JStype, and Meta’s internal frameworks. Designed and optimized databases and integrated APIs/back-end services. Ensured code quality with rigorous reviews, unit/integration testing, and UI automation in CI pipelines. Resolved production issues with Meta observability tools and collaborated cross-functionally. ### Sr. Android Developer / Full Stack · FedEx, TX Mar 2023 – Sept 2024Developed and maintained Android apps using Kotlin, Java, Jetpack Compose, RxJava, and Google Maps APIs. Built and optimized backend services with Java Spring Boot, Maven, and J2EE. Ensured code quality through unit testing, code reviews, and adherence to coding standards. Supported CI/CD pipelines with Jenkins and API validation via Insomnia/Postman. Collaborated with Product, Design, QA, and clients. Scoped, architected, and implemented new features independently. ### Software Engineering Senior Advisor · Cigna, TX Oct 2022 – Mar 2023Built native Android apps with Kotlin, Java, MVVM/MVP, Jetpack Compose, and Shared Flows. Integrated APIs, Okta authentication, and third-party libraries. Ensured code quality through code reviews and architectural recommendations. Supported CI/CD pipelines and deployed apps efficiently. Provided strategic engineering guidance on process improvements and technical documentation. ### Sr. Android Engineer · HEB, TX July 2022 – Oct 2022Developed native Android apps with Kotlin, Java, MVVM, Navigation components, coroutines, and GraphQL API integrations. Engineered robust View Models with unit testing. Led code reviews and enforced coding standards. Maintained CI/CD pipelines and resolved production issues. Provided technical guidance through reports on tech stacks and processes. ### Sr. Android Engineer · Marriott, FL July 2021 – July 2022Developed customer-facing Android apps using Java & Kotlin with MVVM, data binding, and dependency injection. Integrated RESTful APIs, mobile SDKs, push notifications, biometric authentication, and in-app messaging. Implemented transaction management, caching, and multi-OS/device support. Followed Agile methodology with TDD. Leveraged external data sources and UI frameworks to optimize usability. ### Android Developer · AT&T Dallas, TX Nov 2020 – July 2021 ### Android Developer · Samsung, NJ Apr 2020 – Oct 2020 ### Android/Java Developer · Verizon, FL May 2018 – Apr 2020Built Android applications with Kotlin/Java; integrated REST/SOAP APIs, SQLite/Cassandra, and third-party libraries. Conducted unit tests, debugging, and app deployment. ### Android & Python Developer · Freelance / Earlier Roles Jan 2014 – Apr 2018Delivered multiple Android apps using Kotlin/Java; integrated REST APIs and location services. Used Agile and TDD practices to ensure quality and timely delivery. ## Education Learning history ### University of the Cumberlands, KY Dec 2021MBA in Computer Science GPA 3.8 ### Kent State University, OH Dec 2016MS in Computer Science GPA 3.6 This professional hasn’t added portfolio projects yet. This professional hasn’t listed any services yet.