Android Developer (Mid) – Construction Tech (Kotlin, Jetpack)

Sigma Software; Województwo małopolskie; On-site; PLN 180,000 - 240,000; Full time

Job summary

Sigma Software is seeking a Middle Android Developer to join a product-focused team building mobile solutions used globally. You will work on scalable Android applications, adopting Clean Architecture and modern Android technologies, while collaborating with cross-functional teams and integrating native capabilities like NFC, Bluetooth, and Camera.

You will participate in architectural decisions, refactor legacy code, and contribute to continuous improvement in a mature engineering environment

Qualifications

• 3+ years of commercial Android development experience.
• Proficiency in Kotlin and modern Android development practices.

Responsibilities

• Design, develop, and maintain Android apps using Kotlin and Jetpack Compose.
• Participate in architecture discussions and technical decision-making.
• Refactor, optimize, and modernize existing Android codebases.
• Implement scalable features following Clean Architecture.
• Troubleshoot and resolve performance issues.
• Integrate NFC, Bluetooth, and Camera SDKs.
• Collaborate with cross-functional teams including iOS, QA, backend, and product.
• Engage in all SDLC phases and contribute to code quality initiatives.
• Support CI/CD and automation efforts.

Skills

Kotlin

Jetpack Compose

MVVM

Android SDK

Coroutines

Flow

Retrofit

OOP

Design patterns

Dependency injection

JUnit

Mockito

Education

Bachelor’s degree in Computer Science / Computer Engineering

Tools

Dagger/Hilt

NFC/Bluetooth/Camera SDKs

CI/CD tools

Job description

Sigma Software is seeking a Middle Android Developer to join a product-focused team building mobile solutions used globally. You will work on scalable Android applications, adopting Clean Architecture and modern Android technologies, while collaborating with cross-functional teams and integrating native capabilities like NFC, Bluetooth, and Camera.

You will participate in architectural decisions, refactor legacy code, and contribute to continuous improvement in a mature engineering environment