Lead Java Developer (Android application development)

Location : Denver CO (Remote)

Job Type: Full-Time / Contract ($60 to 65/hr on W2 No C2C)

Job Summary

We are seeking a skilled Lead Java Developer with strong Android application development experience to design, develop, and maintain high-quality mobile applications. The ideal candidate will have hands-on experience with Java, Android SDK, and backend integrations using Spring Boot and Kafka, along with a solid understanding of modern mobile architecture and Agile delivery practices.

Key Responsibilities

• Lead Java Developer with strong Design, develop, test, and maintain Android mobile applications using Java, with backend integration using Spring Boot and Kafka

• Collaborate with product managers, UX/UI designers, and backend teams to define and implement application features

• Write clean, scalable, and efficient code following industry best practices and coding standards

• Integrate RESTful APIs and third-party services

• Ensure application performance, security, scalability, and responsiveness

• Debug, troubleshoot, and resolve application and production issues

• Participate in code reviews and ensure adherence to development standards

• Support application deployment, monitoring, and ongoing maintenance

• Work closely with stakeholders and actively participate in Agile/Scrum ceremonies

Required Technical Skills

• Strong hands-on experience in Java

• Extensive experience in Android Application Development

• Proficiency with Android SDK, Android Studio, and Gradle

• Experience working with Spring Boot and Kafka for backend/messaging integration

• Hands-on experience with REST APIs, JSON, and XML

• Knowledge of mobile architecture patterns: MVVM / MVP / MVC

• Experience with SQLite, Room, or other mobile databases

• Familiarity with Git or other version control systems

• Strong understanding of mobile application security and performance optimization

• Good to Have / Preferred Skills

• Experience with Kotlin

• Knowledge of CI/CD pipelines for mobile application development

• Experience with Firebase, push notifications, and mobile analytics

• Exposure to cloud platforms such as GCP or Azure

• Experience publishing applications to the Google Play Store

• Healthcare domain experience is a strong plus