Sr. Mobile Application Engineer

Overview

Position: Senior Mobile Application Engineer (Kotlin/Jetpack/Swift)

Location: Downtown Chicago (Hybrid)

Employment Type: Contract to Hire,
W2 only

• Native Android/iOS expertise
  :
  Role clarified to be focused on native development (Kotlin/Jetpack Compose for Android, Swift/Swift
  
  UI for iOS).
• Legacy modernization experience
  :
  Ability to deal with a 70% legacy codebase while introducing modern architecture patterns and better testability.
• Architecture mastery
  :
  • MVI & MVVM patterns for maintainable, scalable apps.
  • Unidirectional data flow with View Models, State Flow, and dependency injection.
• Testing proficiency
  :
  Comfortable with achieving high test coverage despite legacy code, using Espresso/XCUITest, mocking frameworks, and CI/CD pipelines.
• Security & compliance
  : HIPAA-compliant development with strong encryption practices.
• AI/ML integration
  :
  Adding AI-driven features like real-time transcription into healthcare apps.

• Bachelor’s or Master’s degree in Computer Science, Engineering, or related field.
• 5+ years of professional mobile development experience, including recent work in cross-platform frameworks.
• Proven success delivering and supporting mobile apps in production, particularly in global or enterprise environments.

• Familiarity with Agile methodologies (Scrum, Kanban).
• Experience using analytics platforms like Firebase or Google Analytics.
• Knowledge of feature flagging and A/B testing strategies for global audiences.

Contract to Hire: This role offers the opportunity for full-time employment based on performance.

CoSourcing Partners is an equal opportunity employer committed to fostering an inclusive and diverse workplace. We do not discriminate based on race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, genetic information, or any other protected status under applicable federal, state, or local laws.

We believe in creating a work environment where all employees feel valued, respected, and empowered to contribute to our success. Accommodations are available upon request for applicants with disabilities throughout the hiring process.

Join us and be part of a team that values diversity, equity, and inclusion.