Location: Gurugram, Haryana Employment Type: Full-Time Experience Required: 6 months to 3 Years Role Summary Are you ready to build Android apps that make a real impact? Join Quantum4U Lab a fast-growing, innovation-driven mobile app development company and work on Android apps trusted by over 70 million users globally. Whether you're a fresher with solid project work or a junior developer eager to grow , this is your chance to work in a high-performance environment and create products that scale. Key Responsibilities: Build and maintain Android applications using Kotlin and Java . Translate designs and wireframes into high-quality code following Material Design guidelines. Collaborate with designers, product managers, and backend developers for seamless app experiences. Consume RESTful and SOAP APIs for real-time data interaction. Ensure high performance, responsiveness, and cross-device compatibility . Integrate third-party libraries (Firebase, Payment Gateways, Ads SDKs, Analytics, etc.). Implement APK security , SSL Pinning , and ProGuard for safe user experience. Work on offline capabilities , background services, and push notifications . Support and manage app releases on the Google Play Store . Apply clean code principles , write unit tests , and maintain version control using Git . Must Have Skills Good understanding of Android SDK , Kotlin , and Java . Knowledge of UI/UX design patterns and Jetpack Components (View Model, Live Data, Room). Familiarity with Retrofit , Volley , and JSON parsing . Basic understanding of Version Control (Git) and CI/CD pipelines . Willingness to learn and work in Agile/Scrum environments . Exposure to Firebase , Room DB , and App performance tools . Previous internship/projects in Android App Development . Published apps on the Play Store or GitHub portfolio. About us At Quantum4U , we turn bold ideas into top-rated mobile apps. With over 70M users , we specialize in delivering secure, scalable, and user-friendly solutions for the global market. We believe in pushing boundaries, empowering talent, and building a smarter tomorrow. Why to join us. ✅ Supportive, learning-focused team culture ✅ Projects that scale to millions of users ✅ Flat hierarchy with growth opportunities ✅ Hands-on exposure to real-world app development ✅ Friendly mentors to guide early-career developers ✅ Flexible work culture with a focus on innovation Show more Show less