Senior Android Engineer — Kotlin, Compose, CI/CD

Sii Poland; Toruń; On-site; PLN 210,000 - 270,000; Full time

Benefits offered by this job

Great Place to Work

Solid financial situation

Contracts with the biggest brands

Centre of internal trainings

Many experts you can learn from

Open and accessible management team

Profit sharing

Passion Sponsorship program

Regular integration events and trips

Comfortable and well-equipped offices

MySii app

Medical care

Job summary

Sii Poland is seeking a Senior Android Developer to design, build, and optimize high-performance mobile applications for millions of users within a logistics and digital services initiative.

You will collaborate with cross-functional teams in an agile environment, drive architectural improvements, and contribute to CI/CD pipelines and code reviews. Fluent Polish and English are expected.

Qualifications

• 6+ years of commercial Android development experience.
• Strong proficiency in Kotlin and Android SDK.
• Experience building modern UI with Jetpack Compose.
• Knowledge of asynchronous programming with Coroutines.
• Experience with automated testing and CI/CD pipelines.
• Ability to maintain scalable mobile apps.
• Fluent in Polish and English for international collaboration.

Responsibilities

• Design, develop, and maintain advanced Android applications with focus on performance and stability.
• Refactor and optimize existing solutions; drive architectural improvements.
• Build and maintain automated CI/CD pipelines for development, testing, and release processes.
• Deliver high-quality, testable code and contribute to technical decisions.
• Participate in code reviews and promote engineering standards and best practices.
• Create and maintain technical documentation for development and operations.

Skills

Android development

Kotlin

Android SDK

Jetpack Compose

Coroutines

CI/CD

Automated testing

English language

Polish language

Job description

Sii Poland is seeking a Senior Android Developer to design, build, and optimize high-performance mobile applications for millions of users within a logistics and digital services initiative.

You will collaborate with cross-functional teams in an agile environment, drive architectural improvements, and contribute to CI/CD pipelines and code reviews. Fluent Polish and English are expected.