Mobile Engineer: Android/Kotlin & SDKs

Cosmose, Inc.; Warszawa; On-site; PLN 180,000 - 280,000; Full time

Benefits offered by this job

Stock options

Flat structure

Big scale startup culture

Job summary

Cosmose AI in Warsaw is seeking a Mid-level Mobile Engineer to help build ambitious applications and SDKs powering Cosmose technology on millions of devices.

Bring 3+ years of mobile experience, strong Kotlin and Android skills, and a passion for scalable, high-performance software. Join a fast-paced startup culture with a world-class engineering team.

This role offers opportunities to impact product direction and collaborate across disciplines.

Qualifications

• 3+ years designing, developing, and deploying mobile apps.
• Strong Kotlin, Kotlin Multiplatform, and Android native expertise.
• Experience with Flutter and iOS is a plus.
• Familiarity with AOSP architecture is beneficial.

Responsibilities

• Design, develop, and deploy high-quality mobile applications.
• Optimize performance and user experience.
• Create and maintain automated tests for mobile apps.
• Contribute to SDK development for third-party integrations.
• Collaborate with cross-functional teams and business stakeholders.
• Share knowledge and mentor teammates.

Skills

Mobile development

Kotlin

Kotlin Multiplatform

Android native

Flutter

iOS

Job description

Cosmose AI in Warsaw is seeking a Mid-level Mobile Engineer to help build ambitious applications and SDKs powering Cosmose technology on millions of devices.

Bring 3+ years of mobile experience, strong Kotlin and Android skills, and a passion for scalable, high-performance software. Join a fast-paced startup culture with a world-class engineering team.

This role offers opportunities to impact product direction and collaborate across disciplines.