This Haken Mobile SDK Engineer role focuses on designing and maintaining a high-performance mobile identity SDK, with a strong emphasis on iOS system-level engineering. Working within a globally scaled technology platform, you will build secure, reusable SDK components used by external developers and embedded deeply into mission-critical digital services. This position offers high technical autonomy and long-term impact on widely used mobile products.
Key Responsibilities
- Design, develop, and maintain an iOS-focused mobile SDK, with supplemental Android support.
- Build secure, reusable, and high-performance SDK components for external integration.
- Collaborate with backend, security, and product teams on SDK interfaces and architecture.
- Optimize performance, memory usage, and stability across devices and OS versions.
- Ensure compliance with app store policies, privacy standards, and security requirements.
Required Skills and Qualifications
Experience:
- 5+ years of hands-on mobile application development experience.
- Strong expertise in iOS development using Swift and/or Objective-C.
- Proven experience building SDKs, frameworks, or system-level libraries.
Soft Skills:
- Strong problem-solving ability with high technical ownership.
- Clear communicator in cross-functional and multicultural environments.
- Comfortable collaborating in Japanese, English, or Chinese teams.
Language Requirements:
- Japanese: Conversational level.
- English: Conversational level.
Preferred Skills & Qualifications
- Android development experience using Kotlin and/or Java.
- Knowledge of mobile security, identity verification, or cryptography.
- Experience supporting third-party developers and SDK integrations.
About the Company
Our client builds foundational technology platforms that support a vast global digital ecosystem. Engineers work on mission-critical identity and security services, collaborating with highly skilled international teams. The organization values deep technical expertise, real-world impact, and long-term platform thinking.
Why You'll Love Working Here
- Hybrid working model offering flexibility and work-life balance.
- Casual dress environment with access to an employee food hall.
- Monthly transportation allowance up to ¥20,000.
- Full health, labor, and employment insurance coverage.
- Opportunity to build technology embedded in globally used products.
Don't Miss Out - Apply Now!
