iOS Developer

Ampstek; Greater London; On-site; GBP 45,000 - 65,000; Full time

Job summary

Ampstek is seeking an experienced iOS Developer to design, develop and maintain high-quality mobile applications for iOS. You will collaborate with Product Managers, UX/UI Designers, Backend Developers and QA Engineers to deliver reliable, user-friendly solutions.

The role involves working with Swift, SwiftUI, UIKit, Objective-C legacy code, and contributing to CI/CD pipelines in a fully onsite environment for a 6-month initial contract with potential extension.

Qualifications

• 5+ years of commercial iOS development experience.
• Experience with Swift, UIKit and SwiftUI.
• Strong knowledge of iOS SDK and frameworks.
• Experience with MVVM or equivalent architecture.
• Experience integrating REST APIs.
• Experience with Xcode and Git.
• Experience with XCTest/XCUITest.
• Understanding of iOS lifecycle, memory management and concurrency.
• Experience with CI/CD and automated build pipelines.
• Good debugging and performance optimization skills.
• Experience working in Agile/Scrum teams.
• Objective-C and legacy code experience.
• Combine or RxSwift.
• Core Data / SQLite.
• Swift Package Manager.
• CocoaPods.
• Tuist and Xcodebuild.
• GitHub Actions / CircleCI / Jenkins.
• GraphQL.
• App Store Connect.
• Fintech or regulated environments experience.

Responsibilities

• Design, develop, test and maintain native iOS applications using Swift.
• Build modern user interfaces using SwiftUI and UIKit.
• Develop clean, scalable and maintainable architecture.
• Integrate REST APIs and backend services.
• Work with MVVM, MVC or VIPER patterns.
• Write unit, integration and UI tests.
• Troubleshoot defects, crashes and performance issues.
• Perform profiling and optimization.
• Participate in code reviews and technical discussions.
• Support Objective-C legacy code and modernisation.
• Contribute to CI/CD pipelines and automated builds.
• Collaborate with distributed Agile teams.
• Support App Store release and deployment processes.
• Follow Apple's guidelines for security and accessibility.

Skills

iOS development

Swift

SwiftUI

UIKit

REST APIs

MVVM

Objective-C

Xcode

XCTest

CI/CD

Agile/Scrum

Git

SQLite/Core Data

GraphQL

App Store Connect

Swift Package Manager

CocoaPods

Tuist

RxSwift/Combine

Memory management/concurrency

Tools

Xcode

Job description

Work Model: Fully onsite (weekly 5 days onsite)

Contract: 6 months initially, with potential extension

IR35: Inside IR35

Role Overview

We are looking for an experienced iOS Developer to design, develop and maintain high-quality, scalable and secure mobile applications for iOS platforms.

The successful candidate will work closely with Product Managers, UX/UI Designers, Backend Developers and QA Engineers to deliver reliable and user-friendly mobile solutions.

Key Responsibilities

• Design, develop, test and maintain native iOS applications using Swift.
• Build modern user interfaces using SwiftUI and UIKit.
• Develop clean, scalable and maintainable application architecture.
• Integrate REST APIs and backend services.
• Work with architectural patterns such as MVVM, MVC or VIPER.
• Write unit, integration and UI tests.
• Troubleshoot application defects, crashes and performance issues.
• Perform application profiling and performance optimisation.
• Participate in code reviews and technical discussions.
• Work with existing Objective-C legacy code and support progressive modernisation.
• Contribute to CI/CD pipelines and automated build and deployment processes.
• Collaborate with globally distributed Agile engineering teams.
• Support App Store release and deployment processes.
• Follow Apple's security, accessibility and Human Interface Guidelines.

Mandatory Skills

• 5+ years of commercial iOS development experience.
• Strong hands-on experience with Swift.
• Strong experience with UIKit and SwiftUI.
• Good knowledge of iOS SDK and frameworks.
• Experience with MVVM or equivalent architecture.
• Strong experience integrating REST APIs.
• Experience with Xcode and Git.
• Experience with XCTest / XCUITest.
• Strong understanding of iOS application lifecycle, memory management and concurrency.
• Experience with CI/CD and automated build pipelines.
• Good debugging and performance optimisation skills.
• Experience working in Agile/Scrum teams.
• Objective-C and experience working with legacy codebases.
• Combine or RxSwift.
• Core Data / SQLite.
• Swift Package Manager.
• CocoaPods.
• Tuist and Xcodebuild.
• GitHub Actions / CircleCI / Jenkins.
• GraphQL.
• App Store Connect.
• Experience with fintech, banking or other regulated environments.