Objective-CSwift Application Developer

Cupertino, CA, US • Posted 4 hours ago • Updated 4 hours ago

Full Time

On-site

$80,000 - $90,000/yr

S3 Staffing USA

Fitment

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Job Details

Skills

IOS Development
API
GCD
JSON
Layout
GitHub
FOCUS
Management
SPM
SQLite
Xcode
UIKit
UI
Testing
Swift
Objective-C
Workflow
Network
Optimization
Core Data
Continuous Integration
Performance Tuning
Energy
Dependency Injection
Concurrent Computing
Semantics
Storage

Summary

Required Qualifications
5-7 years of professional iOS development experience with Swift and Objective C in production apps or SDKs.
Strong command of iOS frameworks: UIKit, SwiftUI, Foundation, StoreKit, Core Data (or alternative persistence), Core Animation, Background Tasks, Local Notifications.
Expertise in Swift Concurrency (async/await) and/or Combine, plus legacy concurrency models (GCD, NSOperation).
Proven experience building SDKs/libraries consumed by multiple apps, with focus on API design, semantic versioning, and backward compatibility.
Deep understanding of ATT, SKAdNetwork, and privacy-preserving measurement; hands-on with postbacks, conversion value strategies, and attribution windows.
Solid networking fundamentals: request/response lifecycle, caching, ETags, error handling, and resilience patterns.
Track record of performance tuning (Instruments: Time Profiler, Allocations, Leaks, Energy, Network), memory management, and binary size optimization.
Strong testing discipline: XCTest, XCUITest, mocks/stubs, dependency injection, hermetic tests, and CI workflows (Xcode Cloud, Jenkins, GitHub Actions).
Excellent communication skills and the ability to collaborate in a cross-functional, privacy-first product environment.

Technical Stack & Tools
Languages: Swift (5.x+), Objective C
UI: SwiftUI, UIKit, Auto Layout
Concurrency: Swift Concurrency, Combine, GCD/NSOperation
Networking: URLSession, background tasks, Codable/JSON, protobuf (optional)
Data: Core Data / SQLite / file-based persistence
Build & CI: Xcode, SPM/CocoaPods, Fastlane, Xcode Cloud/Jenkins/GitHub Actions
Testing: XCTest, XCUITest, snapshot testing (iOSSnapshotTestCase), Instruments
Security: Keychain, certificate pinning (where applicable), secure storage
Observability: Unified logging, metrics collectors, crash analytics

Employers have access to artificial intelligence language tools (“AI”) that help generate and enhance job descriptions and AI may have been used to create this description. The position description has been reviewed for accuracy and Dice believes it to correctly reflect the job opportunity.

Dice Id: 91159673
Position Id: 8860077
Posted 4 hours ago

Company Info

About S3 Staffing USA

S3staffingusa is an industry-leading consultant firm specialising in IT-based staffing and software development solutions. We serve as an effective teammate for our international partners to help meet the business objectives set by end customers. Over the past few years, we’ve maintained a steadily growing presence in the industry, and can currently boast of a 200+ strong resource organisation to supervise our customers’ critical operations and intricate business applications.

Our firm is based on the philosophy of cultivating long-term relationships with clients, which is achieved by mastering development of cutting-edge technologies and incorporating proven process-driven methodologies into our workflow. Such competitive advantages are the secret behind how we provide effective, timely technology solutions to our clients, while strictly adhering to budget limits and being involved in a collaborative approach with them. If technology-based solutions to tackle a dynamic and demanding business environment are necessary, then look no further than S3staffingusa.

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