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Skills
Application Programming Interface (API)unmatched
Mobile Applications Developmentunmatched
Performance Tuning/Optimizationunmatched
Scalable System Developmentunmatched
iOSunmatched
Description
We are seeking a Senior iOS Mobile Developer with strong experience building scalable, consumer-facing native iOS applications. The ideal candidate should have expertise in modern iOS development, API integrations, performance optimization, and App Store deployment. Experience with retail or e-commerce applications is highly preferred.
Job Responsibilities
8+ years of experience in Native iOS application development.
Strong expertise in Swift and Objective-C.
Hands-on experience with UIKit, SwiftUI, Core Data, and Core Animation.
Strong understanding of iOS application architecture (MVVM, MVC, Clean Architecture).
Experience integrating RESTful APIs, JSON, and secure authentication mechanisms (OAuth/JWT).
Strong knowledge of Grand Central Dispatch (GCD), async/await, multithreading, memory management, and performance optimization.
Experience implementing offline storage, caching, and data synchronization.
Hands-on experience with Firebase (Analytics, Crashlytics) or similar mobile analytics platforms.
Experience with mobile monitoring and performance tools such as New Relic, Datadog, or similar.
Experience writing Unit Tests and UI Automation Tests using XCTest/XCUITest.
Experience with App Store Connect, TestFlight, certificates, provisioning profiles, and App Store release management.
Familiarity with CI/CD tools such as Fastlane, Bitrise, Jenkins, GitHub Actions, or Azure DevOps.
Strong experience with Git and Agile/Scrum development methodologies.
Excellent problem-solving, communication, and collaboration skills.
Numbers & Facts
Location
San Ramon, CA
Job Type
Contractor, Employee
Salary
$60–$67 Per Hour
Company Size
51 - 200
Year Founded
2012
Headquarters
Farmers Branch, TX, US
Website
https://www.donatotech.com/
Qualifications
Experience developing retail or e-commerce mobile applications.
Experience with Shopify, Shopify Plus, or other enterprise e-commerce platforms.
Experience integrating Apple Pay or other mobile payment solutions.
Experience building features such as loyalty programs, order management, inventory visibility, or personalized shopping experiences.
Experience with cloud platforms such as AWS, Azure, or GCP.
Experience supporting high-volume, consumer-facing mobile applications.