iOS Engineer (Swift & Objective‑C) – Remote Contractor

About the role

We are looking for an experienced iOS Engineer to work remotely on an hourly‑paid contract. You will review AI‑generated iOS code, create high‑quality reference implementations, and provide detailed explanations that help improve AI models used by developers worldwide.

Key responsibilities

• Develop AI training content by writing detailed prompts and reference answers for iOS topics.
• Evaluate, rank, and improve AI responses for correctness, security, performance, and maintainability.
• Review and test AI‑generated code for UIKit/SwiftUI, concurrency, memory management, networking, persistence, and build/release practices.
• Fact‑check technical information and produce step‑by‑step reasoning for complex engineering problems.
• Identify and report issues such as race conditions, memory leaks, insecure recommendations, and performance bottlenecks.

Required profile

• Bachelor’s degree in Computer Science, Software Engineering, or equivalent practical experience.
• 4+ years of professional experience building production iOS applications.
• Strong knowledge of iOS fundamentals, app lifecycle, and background execution constraints.
• Solid experience with concurrency (GCD, OperationQueue, async/await) and ARC memory management.
• Experience with networking, data persistence, testing, CI/CD, and security best practices.

Required skills

• Swift (Swift 5+) and Objective‑C.
• UIKit, SwiftUI, view/controller architecture.
• GCD, OperationQueue, async/await.
• ARC, Instruments, memory‑leak detection.
• URLSession, JSON parsing, caching, offline strategies.
• Core Data, SQLite, Realm.
• XCTest, UI testing, mocking.
• Fastlane (CI/CD) – a plus.
• Keychain, TLS, secure storage.

What we offer

• Fully remote work with flexible hours.
• Hourly paid contract with competitive rates.
• Access to future AI‑related projects through our expert network.