Senior Native Mobile Engineer – iOS & Android, Hybrid

Reaktor Group konserni; Helsinki; Hybrid; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Extensive health care

Hybrid work model

Parental leave support

Professional growth

Job summary

Reaktor Group konserni is seeking a Senior Native Mobile Developer to join our Retail Business Unit across Helsinki, Amsterdam, and Lisbon. You will deliver native iOS and Android apps, craft polished UI, and guide technical decisions with clients and internal teams.

You will own testing, monitoring, and quality, participate in discovery, and shape long-term technical directions while collaborating across a multinational environment. Hybrid work supported in Helsinki.

Qualifications

• Extensive experience in native iOS development using Swift and/or Objective-C.
• Strong experience in native Android development using Kotlin and/or Java.
• Ownership of testing across the development lifecycle and shipping defects-free features.
• Experience with production app monitoring and troubleshooting.
• Ability to engage multiple stakeholders to solve complex problems in an international context.
• Fluent English, both written and spoken.

Responsibilities

• Develop native mobile applications for iOS and Android.
• Build polished UI experiences with high-performance animations.
• Work on mobile SDKs, integrations, analytics, ads, or attribution frameworks.
• Collaborate with clients and stakeholders to clarify requirements and steer tech decisions.
• Contribute to architectural direction and long-term technical strategy.
• Participate in discovery, concepting, and iterative delivery.
• Own testing, debugging, monitoring and production quality.
• Occasionally contribute beyond mobile to backend, API, or cloud topics.

Skills

iOS native

Android native

Testing ownership

Production monitoring

Stakeholder collaboration

English communication

Tools

SwiftUI

Jetpack Compose

Flutter

Job description

Reaktor Group konserni is seeking a Senior Native Mobile Developer to join our Retail Business Unit across Helsinki, Amsterdam, and Lisbon. You will deliver native iOS and Android apps, craft polished UI, and guide technical decisions with clients and internal teams.

You will own testing, monitoring, and quality, participate in discovery, and shape long-term technical directions while collaborating across a multinational environment. Hybrid work supported in Helsinki.