Senior iOS SDK Developer (AdTech)

TL;DR

Senior iOS SDK Developer (AdTech): Developing and maintaining high-performance native iOS SDKs for a global rewarded advertising platform with an accent on SDK architecture, memory efficiency, and binary optimization. Focus on building robust integration layers that handle millions of daily initializations and ensuring seamless performance across the mobile ecosystem.

Location: Hybrid role based in Hamburg, Germany (relocation support provided)

Company

hirify.global is a global leader in rewarded advertising, building monetization technologies that reach over 770 million users annually.

What you will do

• Develop and maintain native iOS SDKs used by millions of users daily.
• Own feature development and iOS specification implementation end-to-end.
• Collaborate with QA to build automated testing strategies and CI pipelines.
• Optimize SDK performance for minimal binary overhead and millisecond initialization.
• Stay current with iOS framework evolution and integrate new capabilities.
• Work across the mobile ecosystem, including potential collaboration with Kotlin, React Native, Flutter, or Unity teams.

Requirements

• 5+ years of experience as an iOS developer.
• Proven experience building and maintaining production SDKs.
• Deep understanding of SwiftUI, modern concurrency, and clean architecture.
• Strong focus on quality and automated testing.
• Ability to handle edge cases at scale for hundreds of millions of users.
• Must be willing to work in Hamburg, Germany (relocation support provided).

Nice to have

• Experience with Kotlin, React Native, Flutter, or Unity.
• Background in the AdTech industry.

Culture & Benefits

• Work on infrastructure impacting 770M+ users.
• Collaborate with a diverse, global team from over 40 countries.
• Fast-paced environment with frequent shipping cycles.
• Focus on direct problem-solving and open collaboration.