Sr Android/iOS SDKs Engineer

Role: Sr Android/iOS SDKs Engineer

Location:  Onsite in San Jose highly preferred, if not, Austin, Chicago secondary

Duration: 6 months+ 

About the Role

We are seeking an experienced and independent Senior Software Engineer to join our Experimentation Platform team as a contractor. In this role, you will be solely responsible for building, maintaining, and optimizing iOS and Android SDKs that enable experimentation at scale.

This position requires someone who is hands-on, highly technical, and capable of delivering latency-critical solutions, while also being able to debug and resolve production issues independently across both platforms.

Responsibilities

•            Lead the design, development, and maintenance of iOS and Android SDKs for the experimentation platform.

•            Deliver optimized, low-latency, and reliable SDKs for large-scale mobile applications.

•            Independently debug, troubleshoot, and resolve production issues on both iOS and Android SDKs.

•            Own the full lifecycle of SDK development — from architecture, implementation, testing, to release management.

•            Partner with backend and experimentation platform teams to ensure seamless integration and end-to-end functionality.

•            Implement best practices in mobile SDK versioning, automated testing, CI/CD, and performance monitoring.

•            Provide strong documentation and developer support to enable easy SDK adoption.

Qualifications

•            5+ years of professional software development experience, with deep expertise(min 3 years experience) in both iOS (Swift/Objective-C) and Android (Kotlin/Java).

•            Proven track record of building and maintaining production-grade SDKs/libraries.

•            Strong understanding of low-latency mobile networking, concurrency, and memory management.

•            Experience independently debugging complex production issues across diverse devices and OS versions.

•            Familiarity with mobile performance profiling, crash analysis, and monitoring tools.

•            Ability to work with minimal guidance and drive solutions end-to-end.

•            Excellent communication skills and ability to collaborate across teams.

Nice to Have:

•            Experience with backend services and Java-based systems.

•            Exposure to cross-platform frameworks (e.g., React Native, Flutter).

•            Prior experience in experimentation, A/B testing, or analytics systems.