Senior Android Developer (Kotlin)

TL;DR

Senior Android Developer (Kotlin): Building and optimizing features for a large-scale e-commerce mobile application with an accent on ad delivery systems and high-performance user experiences. Focus on designing robust mobile architecture, resolving scalability challenges, and collaborating with cross-functional teams to support millions of daily users.

Location: Remote with occasional visits to the client's office in Poland

Salary: 1000–1200 EUR/day + VAT (B2B)

Company

hirify.global is a Polish IT services company with over 15 years of experience, specializing in building highly skilled, autonomous development teams for global clients.

What you will do

• Design, develop, test, and deploy high-quality mobile features.
• Collaborate with product, design, and engineering teams to implement innovative solutions.
• Participate in code reviews and maintain high technical standards.
• Identify and resolve performance and scalability bottlenecks.
• Continuously improve development processes, tools, and infrastructure.

Requirements

• 5+ years of commercial experience in native Android development with Kotlin.
• Strong understanding of mobile architecture patterns like MVVM, MVI, and Clean Architecture.
• Experience with REST APIs and asynchronous programming.
• Proficiency in writing unit and integration tests.
• English proficiency required for professional communication.
• Experience with CI/CD pipelines and version control systems.

Nice to have

• Experience with high-traffic mobile applications.
• Knowledge of RxJava, Coroutines, or Jetpack Compose.
• Familiarity with A/B testing.
• Active GitHub profile or open-source contributions.
• Experience in Agile/Scrum environments.

Culture & Benefits

• High degree of autonomy in organizing team work.
• Access to a proprietary professional development program.
• Opportunity to work on a consumer-focused project with millions of users.
• Supportive team environment with top-class specialists.
• Engagement in charitable and educational initiatives.