Senior Android Consultant

Location: Kraków, PL, 30-302

Working place: Hybrid

Type of contract: B2B contract
Salary range: 140-170 PLN/H

What will you do?

You will join a cross-functional Mobile Platform team building new Android apps and digital experiences, improving the underlying technology and security platforms, and delivering customer-facing products in short, iterative cycles while continuously improving engineering practices, tooling, and quality.

• Develop Android applications in Kotlin using Jetpack Compose.
• Design and implement solutions using MVP and MVVM patterns.
• Apply Clean Architecture principles and support modularization and dependency separation.
• Integrate apps with backend services using Retrofit.
• Implement asynchronous flows using Coroutines and Flow.
• Build and maintain local persistence using Room.
• Implement dependency injection using Koin or Dagger or Hilt.
• Create and maintain CI/CD pipelines for Android delivery.
• Write unit and integration tests and contribute to quality automation.
• Participate in code reviews, retrospectives, and technical discussions in a distributed team.
• Handle production incidents and take part in on-call support when needed.
• Implement mobile security best practices for storage, networking, and authentication.

Requirements

• At least 3 years of Android development experience in Kotlin.
• Very good knowledge of Android framework and app lifecycle.
• Strong Kotlin skills including Coroutines and Flow for asynchronous programming.
• Hands‑on experience with Jetpack Compose.
• Experience with Retrofit for network communication.
• Experience with Room for local databases.
• Knowledge of dependency injection using Koin or Dagger or Hilt.
• Ability to manage application state using ViewModel and LiveData.
• Practical experience with CI/CD pipelines for mobile apps.
• Knowledge of modularization and dependency management.
• Familiarity with MVP and MVVM and Clean Architecture.
• Understanding of mobile application security including secure storage and secure network communication.
• Ability to diagnose and solve production issues and incidents.
• Experience working effectively in distributed teams.
• Very good command of English, spoken and written.
• Hybrid work from our client's office (Kraków).

Nice to have

• Experience with SSL pinning and advanced network security patterns.
• Experience with EncryptedSharedPreferences and Android Keystore.
• Experience with protecting apps against reverse engineering and mobile threats.
• Experience with modern testing approaches for Android UI and integration testing.
• Experience mentoring teammates and sharing knowledge.

We invite candidates from other locations; required visits in the office 6 days per month.