iOS Engineer - Swift, SwiftUI & API-Driven Apps

Machine Learning Technologies, LLC; Pennsylvania; On-site; USD 92,000 - 131,000; Full time

Job summary

Machine Learning Technologies, LLC is seeking an experienced IOS Developer in Westchester, PA to design, build, and maintain native iOS features for large-scale apps. You will work with Swift, SwiftUI, MVVM, and clean architecture while integrating GraphQL/REST APIs and ensuring strong test coverage.

You will collaborate with product, design, backend, QA, and release teams in an Agile environment, focusing on performance, security, accessibility, and a quality user experience.

Qualifications

• Strong hands-on experience with Swift and native iOS SDKs.
• Develop, enhance, and maintain native iOS features for large-scale mobile applications.
• Hands-on experience with SwiftUI, reusable UI components, navigation, and responsive layouts.
• Integrate GraphQL and REST APIs with mobile applications.
• Experience handling API authentication, error handling, data mapping, caching, and asynchronous data flows.
• Strong understanding of MVVM, Coordinator, Clean Architecture, and modular application design.
• Experience writing unit, integration, and UI automation tests using XCTest and XCUITest.
• Strong knowledge of iOS application lifecycle, background execution, privacy permissions, and Apple platform guidelines.
• Optimize application performance, stability, security, accessibility, and user experience.
• Experience with analytics, logging, experimentation, and feature flags.
• Troubleshoot and resolve complex production issues involving mobile applications and API integrations.
• Experience with Git, pull requests, code reviews, and CI/CD pipelines.
• Collaborate with product, design, backend, middleware, QA, and release teams.
• Participate in Agile development, release management, and continuous improvement activities.

Responsibilities

• Develop and maintain native iOS features for large-scale mobile apps.
• Integrate GraphQL and REST APIs with mobile applications and ensure secure data handling.
• Write unit, integration, and UI tests using XCTest and XCUITest.
• Apply MVVM, Coordinator, and Clean Architecture across modules.
• Collaborate with cross-functional teams and participate in Agile ceremonies.

Skills

Swift

SwiftUI

MVVM

Coordinator

Clean Architecture

Unit testing

XCTest

XCUITest

Git

CI/CD

Agile development

REST APIs

GraphQL

Debugging

Accessibility

Tools

Xcode

CI/CD tooling

Job description

Machine Learning Technologies, LLC is seeking an experienced IOS Developer in Westchester, PA to design, build, and maintain native iOS features for large-scale apps. You will work with Swift, SwiftUI, MVVM, and clean architecture while integrating GraphQL/REST APIs and ensuring strong test coverage.

You will collaborate with product, design, backend, QA, and release teams in an Agile environment, focusing on performance, security, accessibility, and a quality user experience.