Senior Android Developer

Our client is a global music and audio streaming platform. We are looking for a Senior Android Engineer for a consulting assignment focused on developing social and real-time features in its large-scale consumer application.

You will work on user-facing Android features, social feeds and near-real-time synchronisation. You will also help evolve the underlying architecture and APIs, with a strong focus on performance, network efficiency, battery consumption, scalability and quality.

• Develop and enhance user-facing Android features, including social feeds and near-real-time synchronisation.
• Evolve Android architecture and APIs to support scalable, reliable functionality.
• Optimise application performance, battery consumption and network usage.
• Build solutions that meet high standards for privacy, security and abuse prevention.
• Collaborate with Android, iOS and backend engineers, as well as product, design and data science teams.
• Lead initiatives spanning multiple teams and platforms when needed.

• At least 8 years of experience in Android development.
• In-depth knowledge of modern Android development and Kotlin.
• Deep knowledge of Android architecture, design patterns and API design.
• A good understanding of how mobile applications interact with backend systems.
• Experience with real-time synchronisation and mobile performance optimisation.
• Experience optimising battery consumption, network usage and application performance.
• Experience using AI agent tools and agent-based development workflows, such as Cursor and Claude.

Nice to have

• Experience with C++.
• Experience with iOS development.
• Experience working across multiple platforms and codebases.

• Work model: Remote.
• Workload: Full-time, 100%.
• Contract type: B2B or a Regular Employment - up to your preference.
• Assignment period: 6 months, with a possibility of extension.

• Initial call with a recruiter (up to 30 minutes).
• Interview(s) with the Hiring Manager.
• Final decision and feedback.

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i sposobach funkcjonowania oraz niezależnie od sytuacji zdrowotnej i rodzinnej. Autentyczność jest dla nas wartością, a naszym celem jest uczciwy i otwarty proces dla wszystkich.

At KUBO, we genuinely care about people. We welcome candidates of all ages, backgrounds, identities, family constellations, health situations, and ways of thinking and interacting with the world. You’re welcome to be yourself — we value authenticity, and we’re committed to creating a fair and inclusive process for everyone.