Senior iOS Developer – Banking – London

Salt; Greater London; Hybrid; GBP 74,000 - 88,000; Full time

Job summary

Salt is seeking a Senior iOS Engineer to join our banking team in London. You will build and refine native iOS applications, collaborating with designers, product owners, QA, and other developers in an Agile environment to deliver high-quality features and a great user experience.

The role requires strong Swift, UIKit, and MVVM experience, REST API integration, and solid testing with XCTest/XCUITest. You will contribute to CI/CD pipelines and work across distributed teams in a fast-paced setting.

Qualifications

• Native iOS development experience with Swift.
• Experience with UIKit and MVVM architecture.
• Familiarity with REST APIs and mobile app integration.
• Experience with XCTest/XCUITest for testing.

Responsibilities

• Developing and maintaining high-quality iOS applications.
• Designing and delivering new mobile features and enhancements.
• Writing clean, scalable, and testable code.
• Identifying, troubleshooting, and resolving software defects.
• Driving performance optimisation and application stability improvements.
• Collaborating closely with cross-functional teams including Product, Design, QA, and Engineering.
• Contributing to CI/CD pipelines and development best practices.
• Participating in solution design for complex and open-ended challenges.

Skills

Swift

UIKit

MVVM

REST APIs

XCTest

XCUITest

GitHub Actions

CircleCI

Tuist

Objective-C

Tools

xcodebuild

Tuist

Job description

Senior iOS Engineer - Banking - London

Duration: 6 - 12 months Daily rate: £400 - £475 (inside IR35) Hybrid: 2 - 3 days per week Start: Now

We are looking for a talented iOS Engineer with a passion for creating exceptional mobile applications and delivering high-quality user experiences. You'll work within a collaborative Agile team alongside designers, product owners, QA engineers, and fellow developers to build, enhance, and optimise innovative iOS features and products. This is an excellent opportunity for an engineer who enjoys solving complex technical challenges, contributing ideas, and writing clean, maintainable code in a fast-paced environment.

What You'll Be Doing

• Developing and maintaining high-quality iOS applications.
• Designing and delivering new mobile features and enhancements.
• Writing clean, scalable, and testable code.
• Identifying, troubleshooting, and resolving software defects.
• Driving performance optimisation and application stability improvements.
• Collaborating closely with cross-functional teams including Product, Design, QA, and Engineering.
• Contributing to CI/CD pipelines and development best practices.
• Participating in solution design for complex and open-ended challenges.

Key Skills & Experience

• Strong experience developing native iOS applications.
• Commercial experience with Swift.
• Experience working with UIKit and MVVM architecture.
• Knowledge of REST APIs and mobile application integration.
• Experience with unit and integration testing using XCTest/XCUITest.
• Familiarity with CI/CD tools such as GitHub Actions, CircleCI, and build tools including xcodebuild and Tuist.
• Experience improving application performance and user experience.
• Ability to work effectively within distributed or remote teams.
• Strong problem-solving skills and ability to work independently.
• Exposure to legacy Objective-C codebases is beneficial.

Technologies You'll Work With

• Swift
• UIKit
• MVVM
• REST APIs
• Objective-C
• XCTest / XCUITest
• GitHub Actions
• CircleCI
• Tuist
• Mobile CI/CD & Automation Tools

*Rates depend on experience and client requirements