Senior Android Engineer — Scalable Mobile Apps

Sii Poland; Warszawa; On-site; PLN 180,000 - 260,000; Full time

Benefits offered by this job

Great Place to Work

Centre of internal trainings

Profit sharing

Open and accessible management team

Medical care

Job summary

Sii Poland is seeking a Senior Android Developer to join a long-term product development initiative in logistics and digital services. You will design, build, and improve high-performance mobile apps, collaborating with cross-functional teams in an agile setting.

You will influence technical decisions, contribute to software architecture, and help deliver scalable, user-centric products. The role emphasizes excellence in code quality and documentation, with opportunities for growth and learning.

Qualifications

• 6+ years of commercial Android development experience.
• Strong Kotlin and Android SDK proficiency.
• Hands-on experience with modern UI using Jetpack Compose.
• Solid knowledge of asynchronous programming with Kotlin Coroutines.
• Experience with automated testing and CI/CD practices.
• Fluent communication in Polish and English for international collaboration.

Responsibilities

• Design, develop, and maintain advanced Android applications with focus on performance, stability, and responsiveness.
• Refactor and optimize code; contribute to architectural improvements.
• Build and maintain automated CI/CD pipelines for testing and release processes.
• Deliver high-quality, testable, and maintainable code; participate in technical decision-making.

Skills

Android development

Kotlin

Jetpack Compose

Coroutines

CI/CD

Polish & English

Tools

Android SDK

Automated testing

Job description

Sii Poland is seeking a Senior Android Developer to join a long-term product development initiative in logistics and digital services. You will design, build, and improve high-performance mobile apps, collaborating with cross-functional teams in an agile setting.

You will influence technical decisions, contribute to software architecture, and help deliver scalable, user-centric products. The role emphasizes excellence in code quality and documentation, with opportunities for growth and learning.