Senior Android Engineer - Scale a 10M+ User App & CI/CD

b3consultingpoland; Kraków; On-site; PLN 180,000 - 280,000; Full time

Benefits offered by this job

Health and sports benefits tailored to

Speed Coaching

Sports training

Competition opportunities

Job summary

B3 in Poland is seeking a Senior Android Developer to join our mobile team and contribute to a large-scale native Android app used by millions.

You will work across CI/CD pipelines, DevEx improvements, and modern architectures using Kotlin and Java, MVVM, and Clean Architecture, across on-prem and cloud.

Join a Scandinavian culture that values logic, trust, and open dialogue, with health benefits, training, and competitive international projects.

Qualifications

• Minimum 5 years of Android development experience.
• Expert knowledge of the Android SDK and device configurations.
• Experience optimizing apps in Kotlin and Java.
• Proficient with Jetpack Compose, Coroutines/Flow, MVVM and Clean Architecture.
• Experience designing and maintaining CI/CD pipelines (GitLab CI, GitHub Actions).
• English at minimum B2 level.
• Eligibility to work in Poland.

Responsibilities

• Develop a large-scale native Android app for millions of users.
• Design, implement and maintain efficient CI/CD pipelines and DevEx processes.
• Refactor code, participate in reviews and ensure scalable MVVM/Clean Architecture.

Skills

Android development

Jetpack Compose

MVVM / Clean Architecture

CI/CD pipelines

English (B2)

Agile methodologies

Tools

GitLab CI

GitHub Actions

Firebase

Job description

B3 in Poland is seeking a Senior Android Developer to join our mobile team and contribute to a large-scale native Android app used by millions.

You will work across CI/CD pipelines, DevEx improvements, and modern architectures using Kotlin and Java, MVVM, and Clean Architecture, across on-prem and cloud.

Join a Scandinavian culture that values logic, trust, and open dialogue, with health benefits, training, and competitive international projects.