Summary: Join our Mobile Core Framework team to build and evolve the iOS native layer of our mobile client SDK, designing and implementing Swift-based APIs. Highlights: 1. Design, build, and maintain native iOS modules in Swift. 2. Optimize SDK performance with focus on memory management and battery efficiency. 3. Contribute to SDK documentation and versioning strategy. ### **Description** About osapiens At osapiens, more than **550 talented minds** unite around one mission: enabling sustainable growth for businesses worldwide. Founded in 2018 and headquartered in Mannheim, Germany, we have built the AI\-driven osapiens HUB \- a multi\-tenant platform hosting 26 enterprise\-grade solutions designed for cross\-company collaboration, automation, and compliance. With offices across Europe and the US, **we are shaping the future of scalable and secure business technology.** Your Team Join our Mobile Core Framework team to build and evolve the iOS native layer of our mobile client SDK. You'll design and implement Swift\-based APIs that bridge native iOS capabilities to React Native, enabling app developers across the company to build powerful, performant mobile solutions.### **Your Responsibilities** * Design, build, and maintain native iOS modules in Swift that expose platform capabilities (offline sync, background processing, device integrations) to React Native applications * Own the React Native bridge layer, including Objective\-C bridging headers and native module architecture * Optimize SDK performance with focus on memory management, battery efficiency, and startup time * Stay current with iOS platform evolution (new APIs, Swift language features, Xcode tooling) and integrate relevant capabilities into the SDK * Build and maintain automated test suites and CI/CD pipelines in Azure DevOps * Collaborate with app development teams to understand their needs and provide excellent developer experience * Contribute to SDK documentation and versioning strategy ### **Your Experience** * Strong proficiency in Swift and the iOS SDK (UIKit/SwiftUI, Core Data, networking, background execution) * Experience building frameworks, libraries, or SDKs consumed by other developers * Familiarity with React Native native module development (or willingness to learn quickly) * Solid understanding of memory management, threading, and performance optimization on iOS * Experience with Xcode build systems, code signing, and distribution * English is our working language; fluency in written and spoken English is required Nice to Have* Experience with Objective\-C and Swift/ObjC interoperability * Knowledge of TypeScript and React Native architecture * Experience with offline\-first mobile architectures and data synchronization * Familiarity with CI/CD for mobile (Azure DevOps, Fastlane, or similar) * Experience with Android/Java and/or Windows/Objective\-C development ### **Join us for this and more...** * A purpose\-driven mission tackling complex sustainability challenges while working alongside global industry pioneers at a **fast\-growing unicorn company** * Room for creativity through collaborative teamwork and an open communication culture * Flexibility and team bonding with our hybrid work options * Sustainable mobility options, promoting eco\-friendly commuting solutions * Fun team events and outings with our global teams * An inspiring working environment in Madrid (and globally!) * 25 days of vacations * Health Care Insurance * Other perks ### **About osapiens** **osapiens** develops holistic Software\-as\-a\-Service solutions that help global companies ensure transparency, efficiency, and trust across their entire value chain. Through its cloud platform, the **osapiens HUB**, the company leverages innovative technologies, including artificial intelligence, to strengthen businesses while promoting human rights, ecological responsibility, and sustainable corporate governance. Founded in 2018 and headquartered in Mannheim, Germany, **osapiens** works with **around 2,000 companies in over 50 countries** across industries such as consumer goods, automotive, fashion, pharmaceuticals, and medical products. The company is backed by **Goldman Sachs** and **Decarbonization Partners**, reinforcing its commitment to responsible, sustainable growth.