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Robert Half Logo Robert Half · IT - Software Development

Senior Android Mobile Developer

United States, Middleton Employment contract, Contract work · Job Posted May 29, 2026
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Job Description

This role is ideal for someone who enjoys building modern mobile applications, mentoring other developers, and helping shape technical direction within a collaborative engineering environment. You’ll work closely with cross-functional teams to modernize a native Android application while contributing across backend services, frontend mobile interfaces, and integrations with internal systems.

Job Responsibility

  • Design, develop, and modernize a native Android mobile application
  • Collaborate with product owners, developers, QA, and business stakeholders to deliver scalable technical solutions
  • Support modernization efforts from legacy Java-based Android applications to Kotlin
  • Build and maintain REST APIs and integrations with internal systems
  • Participate in architecture discussions and contribute to long-term technical strategy
  • Perform code reviews and provide mentorship to junior and mid-level engineers
  • Promote best practices, innovation, and continuous improvement within the development team
  • Evaluate and test new tools, frameworks, and approaches to improve delivery and application performance
  • Build strong partnerships with business stakeholders and take ownership of business outcomes

Requirements

  • Strong experience with Android mobile application development
  • Hands-on experience with: Java, Kotlin, Maven, Gradle
  • Experience upgrading legacy native Android applications from Java to Kotlin
  • Experience working with Android SDKs and APIs
  • Strong understanding of REST APIs and authentication protocols
  • Experience with testing tools such as JUnit and JMeter
  • Backend development experience supporting mobile applications
  • Ability to mentor engineers and contribute within a collaborative Agile environment

Nice to have

  • Bachelor’s degree in Computer Science, Engineering, or related field preferred
  • Equivalent experience (10+ years) will also be considered

What we offer

  • medical, vision, dental, and life and disability insurance
  • 401(k) plan
  • free online training
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