Senior Mobile Developer – iOS & Android

About the role

Reaktor is seeking an experienced Senior Mobile Developer to join its Retail Business Unit across European locations. You will work on native iOS and Android applications, delivering high‑quality, performant mobile experiences for a range of retail clients.

Key responsibilities

• Design and develop native mobile applications for iOS (Swift/Objective‑C) and Android (Kotlin/Java).
• Create polished UI components and high‑performance animations.
• Implement mobile SDKs, analytics, ad and attribution integrations.
• Collaborate with clients and internal stakeholders to define requirements and drive technical decisions.
• Contribute to architectural direction and long‑term technical strategy.
• Own testing, debugging, monitoring, and production support.
• Occasionally assist with backend API or cloud‑infrastructure considerations when needed.

Required profile

• Several years of professional experience building production‑grade iOS and Android apps.
• Strong ownership mindset for the full development lifecycle.
• Proven ability to work with multiple stakeholders on ambiguous problems.
• Fluent written and spoken English.

Required skills

• Swift and/or Objective‑C
• Kotlin and/or Java
• SwiftUI (nice‑to‑have)
• Jetpack Compose (nice‑to‑have)
• Reactive programming concepts
• Flutter (nice‑to‑have)
• App Store and Google Play distribution
• Mobile SDK integration, analytics, ads, attribution frameworks
• Familiarity with backend APIs, databases or cloud services

What we offer

• Hybrid work model (office, client sites, remote)
• Opportunity to influence technical direction across multiple projects
• Collaborative, low‑hierarchy environment