Senior Mobile SDK Engineer
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Job Description
Senior Mobile SDK Engineer building Unity gaming SDKs for MWDN’s gaming loyalty platform client. Owning SDK architecture, native mobile bridges, releases, testing, and partner experience.
Responsibilities:
- Design and build the SDK, including in-game placement components, app-to-app handoff, deep linking, and referral identifiers that survive store visits and installs
- Build the native layer, including iOS and Android bridges, IL2CPP, Gradle and Xcode plugin plumbing, and coexistence with other SDKs in the build
- Enforce size, cold-start, and frame-time budgets in CI
- Own versioning, UPM/Asset Store distribution, Unity LTS support, and migration paths
- Build the test surface, including a sample game, cross-version build verification, integration tests, debug mode, and documentation
- Own SDK architecture, public API, releases, and partner experience end to end
Requirements:
- 5+ years engineering experience
- Substantial Unity/C# experience shipped to iOS and Android
- Experience building or core-contributing to a library or SDK consumed by other developers
- Knowledge of API design and backward compatibility
- Deep knowledge of the Unity mobile build pipeline
- Comfortable working with Kotlin/Java and Swift/Objective-C to build bridges and debug platform behavior
- Profiling discipline
- Strong written English
- Nice to have: monetization SDK experience, including offerwall, rewarded video, or mediation
- Nice to have: attribution and deep-linking experience at an MMP
- Nice to have: mobile game development or live-ops experience
- Nice to have: reward-fraud experience
Benefits:
- Security through careful client vetting to minimize risks and ensure reliability and timely payments
- Career support and assistance finding new opportunities if a project is not the right fit
- Legal assistance with independent contractor or sole proprietorship status, taxes, and related processes
- English courses
- Professional growth opportunities
- Team-building events
- Flexible working hours
- 29 days of PTO (18 working days per year plus all national holidays)
- 10 paid recovery days
- Full financial and legal support for independent contractors
- Free English classes with native speakers or Ukrainian teachers
- Dedicated HR support
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