Senior Native Mobile Engineer – iOS & Android (Hybrid)

Reaktor Innovations Oy; Helsinki; Hybrid; EUR 75,000 - 110,000; Full time

Job summary

Reaktor Innovations Oy is seeking a Senior Native Mobile Developer to join our Gaming & Entertainment unit in Helsinki. You will drive native iOS and Android development, delivering polished mobile experiences and high-performance animations.

You will collaborate with multidisciplinary teams, own the testing lifecycle, and help shape architectural decisions. The role supports hybrid work and requires fluent English in an international environment.

Qualifications

• Experience in native iOS development with Swift and/or Objective-C.
• Experience in native Android development with Kotlin and/or Java.
• Ownership mindset across the full development cycle, from implementation to release.
• Ability to monitor production apps and troubleshoot issues.

Responsibilities

• Develop native mobile applications for iOS and Android.
• Build polished UI experiences with high-performance animations.
• Collaborate with clients and stakeholders to clarify requirements and drive initiatives.
• Contribute to architectural decisions and long-term technical direction.
• Take ownership of testing, debugging, and production quality.

Skills

Swift

Objective-C

Kotlin

Java

Testing ownership

Production monitoring

Stakeholder collaboration

English communication

Job description

Reaktor Innovations Oy is seeking a Senior Native Mobile Developer to join our Gaming & Entertainment unit in Helsinki. You will drive native iOS and Android development, delivering polished mobile experiences and high-performance animations.

You will collaborate with multidisciplinary teams, own the testing lifecycle, and help shape architectural decisions. The role supports hybrid work and requires fluent English in an international environment.