iOS Developer
TechBiz Global GmbH
Stuttgart, Germany
yesterday
Role details
Contract type
Permanent contract Employment type
Full-time (> 32 hours) Working hours
Regular working hours Languages
English Experience level
SeniorJob location
Stuttgart, Germany
Tech stack
API
Artificial Intelligence
XCode
App Store (IOS)
Cloud Computing
Continuous Integration
Data Security
Design of User Interfaces
Push Technology
Open Source Technology
WebSocket
Alwayson
UIKit
Chatbots
Swiftui
Siri
Backend
ONNX (Open Neural Network Exchange) Format
Job description
The iOS app will bring this experience to iPhone and iPad, offering users an always-on assistant that prioritizes data security and sovereignty.
In this role, you will take full ownership of the iOS stack - including architecture, UI/UX, networking, on-device ML inference, and App Store delivery. This is a founding mobile position, where you will define the technical direction and set the standards the team will follow long-term.
Requirements
5+ years building production iOS apps in Swift; strong SwiftUI and UIKit fluency
- Shipped at least one app with on-device ML (Core ML, ONNX runtime, or equivalent)
- Deep familiarity with iOS security APIs (Keychain, Data Protection, Secure Enclave, App Attest)
- Experience building offline-first apps with robust sync and conflict resolution
- Comfortable with CI/CD for mobile (Fastlane / Xcode Cloud), TestFlight distribution, and App Store review processes
- Strong product design sense - experience in app design, with a keen eye for craft, motion, and the details that make an app feel native
NICE TO HAVE
- Experience with RAG pipelines, vector databases, or AI-agent architectures
- Published open-source Swift packages or technical writing on iOS architecture
- WatchOS or visionOS prototyping experience
WHAT YOU'LL BUILD
- Native SwiftUI interface for Fluso's conversational AI, task management, and knowledge-graph views
- On-device inference pipeline for privacy-sensitive operations (local embeddings, summarization, PII
redaction)
- Deep integrations with system frameworks - WidgetKit, Siri Shortcuts, Spotlight indexing, push
notifications, App Intents
- Real-time sync engine with the Fluso backend (WebSocket + incremental REST), handling offline-first
conflict resolution
- Secure credential storage and end-to-end encrypted channel for connected accounts (Gmail, Calendar,
Slack, Drive)
- Multi-window iPad experience with stage manager support and keyboard-first workflows
About the company
At TechBiz Global, we are providing recruitment service to our TOP clients from our portfolio. We are currently looking for a
