Senior iOS SDK Engineer

Location: Remote
Employment Type: Full-Time / Contract

Role Summary

We are looking for aSenior iOS SDK Engineer to design, develop, and maintain an iOS SDK written primarily inSwift, enabling internal and partner applications to integrate seamlessly with our APIs.

This is aplatform / SDK engineering role focused onstability, performance, memory efficiency, and developer experience. You will collaborate closely with Backend, Android, and Web/React Native teams to ensure consistent behavior across platforms.

Responsibilities

• Design, develop, and maintain the iOS SDK using Swift.
• Build SDK APIs that wrap REST services for event reporting and personalization.
• Ensure SDK stability, performance optimization, memory efficiency, and safe behavior within host applications.
• Own SDK versioning, releases, and backward compatibility.
• Build, publish, and maintain SDK distribution using CocoaPods, supporting migration to Swift Package Manager (SPM).
• Develop and maintain unit and integration tests to validate SDK behavior.
• Maintain SDK documentation and developer integration guides.
• Collaborate cross-functionally with Backend, Android, and Web/React Native SDK engineers.

Requirements

• 5+ years of native iOS development experience with strong proficiency in Swift.
• Proven experience building and maintaining iOS SDKs, frameworks, or reusable libraries.
• Strong understanding of iOS memory management, performance optimization, and platform constraints.
• Solid experience consuming REST APIs, including authentication, retries, and error handling.
• Experience with iOS dependency management tools (CocoaPods); familiarity with Swift Package Manager (SPM).
• Proficiency with Git and CI/CD pipelines.

Nice to Have

• Experience migrating iOS SDKs from CocoaPods to Swift Package Manager.
• Experience distributing binary frameworks (XCFrameworks).
• Experience designing SDK-level error models, logging, and diagnostics.
• Familiarity with DocC or similar documentation tooling.
• Experience maintaining Objective-C interoperability in mixed-language environments.
• Experience collaborating across Android or Web/React Native platforms.