Mobile SDK Developer (iOS + Android)

Vox AI is building the world’s most advanced voice operating system for restaurants, starting with drive-thru automation and employee assist tools. Our platform handles real-time audio with WebRTC and WebSockets, integrates with POS systems, and runs AI models like Claude for real-time reasoning.

We are seeking an experienced Mobile SDK Developer who can build both iOS and Android SDKs for Vox AI, enabling developers to integrate our real-time voice capabilities into their own apps. This role requires deep expertise in WebRTC, WebSockets, and mobile app development, along with the ability to produce full demo apps showcasing SDK usage.

Develop and maintain iOS (Swift) and Android (Kotlin/Java) SDKs for Vox AI.

• Implement WebRTC-based real-time audio streaming and WebSocket data messaging.


• Build fully functional sample/demo apps to demonstrate SDK capabilities.


• Optimize audio performance for low latency and high quality.


• Write clear, developer-focused documentation.


• Publish SDKs to CocoaPods/Swift Package Manager and Maven Central/JCenter/Gradle.


• Integrate AI-assisted coding tools (Claude Code or similar) into workflows.


• Work closely with backend engineers to align features with API capabilities.


• Set up CI/CD pipelines and automated tests for SDK stability.

Proven experience delivering production-grade mobile SDKs for both iOS and Android.

• Deep knowledge of WebRTC and WebSockets.


• Strong skills in Swift, Kotlin, and Java.


• Experience with real-time audio streaming and performance optimization.


• Ability to build and release complete native mobile apps.


• Familiarity with AI-assisted coding tools (Claude Code, GitHub Copilot, Cursor AI).


• Strong understanding of networking and multithreading in mobile apps.


• Bonus: TypeScript/React Native experience, voice AI, or QSR/restaurant tech knowledge.

Competitive salary + stock options.

• Key role in shaping Vox AI’s mobile developer experience.


• Work with a cutting-edge AI stack (Claude, custom models).


• Join a small, focused team competing with industry giants.


• Work from our office in downtown Amsterdam

If you’re passionate about building high-performance mobile SDKs and want to work on technology that powers the future of voice AI, we’d love to hear from you.