Department: osapiens HubEmployment Type: Full TimeLocation: MadridReporting To: Head of Hub EngineeringDescriptionAbout osapiensAt 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 TeamJoin 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 ResponsibilitiesDesign, build, and maintain native iOS modules in Swift that expose platform capabilities (offline sync, background processing, device integrations) to React Native applicationsOwn the React Native bridge layer, including Objective-C bridging headers and native module architectureOptimize SDK performance with focus on memory management, battery efficiency, and startup timeStay current with iOS platform evolution (new APIs, Swift language features, Xcode tooling) and integrate relevant capabilities into the SDKBuild and maintain automated test suites and CI/CD pipelines in Azure DevOpsCollaborate with app development teams to understand their needs and provide excellent developer experienceContribute to SDK documentation and versioning strategyYour ExperienceStrong proficiency in Swift and the iOS SDK (UIKit/SwiftUI, Core Data, networking, background execution)Experience building frameworks, libraries, or SDKs consumed by other developersFamiliarity with React Native native module development (or willingness to learn quickly)Solid understanding of memory management, threading, and performance optimization on iOSExperience with Xcode build systems, code signing, and distributionEnglish is our working language; fluency in written and spoken English is requiredNice to HaveExperience with Objective-C and Swift/ObjC interoperabilityKnowledge of TypeScript and React Native architectureExperience with offline-first mobile architectures and data synchronizationFamiliarity with CI/CD for mobile (Azure DevOps, Fastlane, or similar)Experience with Android/Java and/or Windows/Objective-C developmentJoin us for this and more...A purpose-driven mission tackling complex sustainability challenges while working alongside global industry pioneers at a fast-growing unicorn companyRoom for creativity through collaborative teamwork and an open communication cultureFlexibility and team bonding with our hybrid work optionsSustainable mobility options, promoting eco-friendly commuting solutionsFun team events and outings with our global teamsAn inspiring working environment in Madrid (and globally!)25 days of vacationsHealth Care InsuranceOther perks
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