iOS Developer

iOS Developer

About RapNet

RapNet operates the world’s largest online diamond trading network, providing professional-grade digital infrastructure to thousands of businesses globally. Our systems are performance-driven, data-intensive, and built to operate at scale in a real-time trading environment.

Role Overview

We are seeking a skilled iOS Developer to join our team and work on an established, large-scale native iOS application. This is a mature production codebase with complex architecture, real-time functionality, and enterprise-level technical requirements. You will collaborate closely with backend, product, and design teams to build scalable features and maintain a high standard of engineering quality.

This is primarily a strong mobile engineering role, with occasional integration of AI-powered capabilities where relevant to product needs.

Tech Stack

Swift 5 | UIKit + Storyboards | URLSession + Apollo (GraphQL) | Core Data | Auth0 | Firebase (Crashlytics, FCM, Analytics, Remote Config) | SendBird | Ably | Intercom | Mixpanel | New Relic | CocoaPodsWhat

What You’ll Work With

Large-scale production codebase using MVVM architecture with custom reactive bindings
Swift and Objective-C interoperability
Real-time messaging and push notification systems
Complex search, filtering, and dynamic list interfaces
Multi-language localization (English and Chinese)
Minimum supported version: iOS 12.4

Responsibilities

Develop and maintain production-level iOS features
Write clean, maintainable, and scalable code
Collaborate cross-functionally to deliver new functionality
Optimize performance and troubleshoot issues
Participate in code reviews and architectural discussions
Maintain high engineering standards across releases

Requirements

5+ years of iOS development experience
Strong proficiency in Swift and UIKit
Experience working on large, production mobile applications
Solid understanding of mobile architecture patterns (MVVM preferred)
Experience integrating APIs (REST and/or GraphQL)
Experience with Git-based workflows
Experience using Cursor or similar AI-assisted development tools
Familiarity with integrating AI APIs or intelligent features into apps