Expert Android Consultant (Warszawa, PL, 00-839)

GFT Technologies SE; Warszawa; On-site; PLN 234,000 - 289,000; Full time

Job summary

GFT Technologies SE in Warsaw seeks an experienced Android Developer to design and build modern mobile solutions. You will integrate apps with backend services, contribute to secure, scalable software used by millions of users, and work in an agile, cross-functional team.

The role requires 3+ years of Android development with Kotlin, strong knowledge of Android SDK, MVVM, Clean Architecture, and proficiency with Retrofit/OkHttp, Firebase, Room and CI/CD tooling.

Qualifications

• 3+ years of commercial Android development experience with Kotlin.
• Strong Android SDK, Android Studio and AndroidX knowledge.
• Experience with MVVM, Clean Architecture and multi-module apps.
• Proficient in RxJava3 and Kotlin Coroutines, LiveData and Flow/StateFlow.
• REST/SOAP integrations using Retrofit/OkHttp; Firebase, Room and WorkManager familiarity.
• Experience with testing (JUnit, Mockito, MockK or PowerMock) and Gradle-based projects.
• Knowledge of DI frameworks (Hilt, Dagger2, Koin) and CI/CD (Jenkins, GitLab CI).
• Fluent Polish is required.

Responsibilities

• Develop and maintain Android applications using Kotlin and Java.
• Design and implement new mobile features and secure, scalable solutions.
• Integrate apps with backend services and ensure high quality and performance.
• Write unit and integration tests; participate in CI/CD and releases.
• Collaborate with cross-functional teams in an agile environment.

Skills

Android/Kotlin

Android SDK

Android Studio

MVVM

Clean Architecture

Multi-module apps

RxJava3

Kotlin Coroutines

LiveData

Flow/StateFlow

Retrofit

OkHttp

Firebase

Room

WorkManager

Android Architecture Components

JUnit

Mockito

MockK

PowerMock

Gradle

Hilt

Dagger2

Koin

Jenkins

GitLab CI

Security

Polish

Tools

Retrofit

OkHttp

Firebase

Room

WorkManager

Android Architecture Components

Gradle

Jenkins

GitLab CI

Job description

Type of contract: B2B contract

Salary range: 170 - 210 PLN/H

What will you do?

You will be part of innovative projects for one of the largest mobile banking applications in Poland. In this role, you will design and develop modern Android solutions, integrate mobile applications with backend systems, and contribute to building secure, scalable and high-quality software used by millions of users.

Your tasks

• Develop and maintain Android applications using Kotlin and Java
• Design and implement new mobile features
• Integrate applications with backend services
• Write unit and integration tests
• Ensure high code quality, security and performance
• Participate in CI/CD processes and application releases
• Collaborate with cross-functional teams in an agile environment

Your skills

• At least 3 years of commercial experience in Android development with Kotlin
• Strong knowledge of Android SDK, Android Studio, AndroidX and Material Components
• Experience with MVVM, Clean Architecture and multi-module applications
• Good knowledge of RxJava3 and Kotlin Coroutines
• Experience with LiveData, Flow and StateFlowExperience with REST/SOAP integrations using Retrofit and OkHttp
• Knowledge of Firebase, Room, WorkManager and Android Architecture Components
• Experience with unit and integration testing using JUnit, Mockito, MockK or PowerMock
• Knowledge of Gradle, dependency management and dependency injection frameworks such as Hilt, Dagger2 or Koin
• Experience with CI/CD tools such as Jenkins or GitLab
• Knowledge of application security, secure data storage and performance optimization
• Fluent Polish

Nice to have

• Experience in banking or financial services projects
• Experience with advanced Gradle configurations
• Knowledge of mobile accessibility standards