Senior iOS Engineer: Lead Features & Architecture (Remote)

Syncrux SMN Digital Services LLC; New York (NY); Hybrid; USD 120,000 - 190,000; Full time

Benefits offered by this job

Health insurance

Flexible/remote work options

Learning and development budget

Job summary

Syncrux SMN Digital Services LLC is seeking a Senior iOS Developer to design, build, and maintain high-quality iOS applications. You will own features end-to-end, mentor juniors, and help shape our mobile architecture and engineering practices.

You will design scalable apps, collaborate with product teams, and drive quality through robust testing and performance optimization. A strong foundation in Swift and modern iOS frameworks is essential, with opportunity to influence architecture and code

Qualifications

• 5+ years of professional iOS development experience.
• Proficiency in Swift (Objective-C knowledge a plus).
• Strong SwiftUI and UIKit experience.
• Deep understanding of iOS SDK, Core Data, Core Animation, and GCD/Combine/async-await.
• Experience with RESTful APIs, JSON, and networking libraries (URLSession, Alamofire).
• Familiarity with architectural patterns (MVVM, MVC, VIPER, Clean Architecture).
• Experience with version control (Git) and CI/CD tools (Fastlane, Bitrise, Jenkins, Xcode Cloud).
• Strong understanding of App Store submission process and Apple Human Interface Guidelines.
• Experience writing unit and UI tests (XCTest, XCUITest).
• Bachelor's degree in Computer Science or equivalent practical experience.

Responsibilities

• Design, develop, and maintain scalable iOS apps using Swift and SwiftUI/UIKit.
• Own features from design through release, including code reviews and QA support.
• Collaborate with product managers, designers, and backend engineers to ship features.
• Write clean, well-tested code following MVVM/MVC/VIPER and SOLID principles.
• Optimize app performance, memory usage, and battery efficiency.
• Integrate RESTful APIs and third-party SDKs; handle offline data sync.
• Maintain CI/CD pipelines for automated builds, tests, and App Store deployment.
• Mentor junior/mid-level developers and conduct code reviews.
• Stay current with iOS releases, Apple guidelines, and industry trends.
• Troubleshoot production issues and crashes with crash reporting tools.

Skills

Swift

SwiftUI

UIKit

iOS SDK

Core Data

Core Animation

GCD / Combine / async-await

RESTful APIs

JSON

MVVM

MVC

VIPER

CN OR Clean Architecture

Git

CI/CD

XCTest

Education

Bachelor's degree in Computer Science or equivalent

Tools

Git

Fastlane

Bitrise

Jenkins

Xcode Cloud

Swift Package Manager

Job description

Syncrux SMN Digital Services LLC is seeking a Senior iOS Developer to design, build, and maintain high-quality iOS applications. You will own features end-to-end, mentor juniors, and help shape our mobile architecture and engineering practices.

You will design scalable apps, collaborate with product teams, and drive quality through robust testing and performance optimization. A strong foundation in Swift and modern iOS frameworks is essential, with opportunity to influence architecture and code