Senior iOS Engineer — SwiftUI & API‑Driven Apps

Valiant Technologies LLC; Pennsylvania; On-site; USD 96,000 - 131,000; Full time

Job summary

Valiant Technologies LLC is seeking an experienced IOS Developer to join our Westchester, PA team. The role focuses on building, enhancing, and maintaining native iOS features for large-scale mobile applications using Swift and modern architecture patterns.

You will work with GraphQL/REST APIs, implement robust tests with XCTest/XCUITest, and contribute to Agile release cycles while ensuring excellent performance and user experience.

Qualifications

• Strong hands-on experience with Swift and native iOS SDKs.
• Experience with SwiftUI, modular architecture, and reusable UI components.
• Proficient in MVVM, Coordinator, and Clean Architecture patterns.
• Experience writing unit, integration and UI tests with XCTest/XCUITest.

Responsibilities

• Develop, enhance, and maintain native iOS features for large-scale mobile applications.
• Integrate GraphQL and REST APIs with mobile applications.
• Collaborate with product, design, backend, QA, and release teams in an Agile environment.
• Optimize performance, stability, security, accessibility, and user experience.
• Contribute to CI/CD pipelines and code reviews.

Skills

Swift

SwiftUI

MVVM

Coordinator

Clean Architecture

API integration

Git

CI/CD

XCTest

XCUITest

Tools

GraphQL

REST APIs

Git

CI/CD

XCTest

XCUITest

Job description

Valiant Technologies LLC is seeking an experienced IOS Developer to join our Westchester, PA team. The role focuses on building, enhancing, and maintaining native iOS features for large-scale mobile applications using Swift and modern architecture patterns.

You will work with GraphQL/REST APIs, implement robust tests with XCTest/XCUITest, and contribute to Agile release cycles while ensuring excellent performance and user experience.