iOS Engineer

October 9, 2026

Middle

Burgess Hill, United Kingdom

Indeed

Description

Cognizant is looking for an iOS Engineer to develop and enhance mobile applications used by millions of customers worldwide. The role covers designing, developing and maintaining high-quality iOS apps in a fast-paced, agile and collaborative environment. The engineer will write clean, maintainable code, take part in code reviews, contribute to CI/CD pipelines and work with both modern and legacy codebases.

Responsibilities

Design, develop, and maintain high-quality iOS applications
Collaborate with cross-functional teams to deliver new features and enhancements
Write clean, efficient, and maintainable code while continuously improving existing solutions
Participate in code reviews and contribute to engineering best practices
Troubleshoot, debug, and resolve application issues
Contribute to CI/CD pipelines and automation initiatives
Optimize application performance, reliability, and scalability
Work with both modern and legacy codebases as required
Design solutions for complex and open-ended business challenges
Develop and maintain unit and integration tests to ensure software quality

Requirements

Experience building and maintaining iOS applications
Strong proficiency in Swift and iOS development frameworks
Experience with build tools such as Tuist, xcodebuild, GitHub Actions, and CircleCI
Understanding of Continuous Integration and Continuous Delivery (CI/CD) practices
Strong debugging and problem-solving skills
Knowledge of functional programming concepts and patterns
Experience with performance analysis and optimization
Ability to work with and modernize legacy Objective-C code
Experience writing unit and integration tests
Familiarity with open-source technologies and practices
Experience working within globally distributed teams
Strong self-management, organization, and time management skills
Experience integrating mobile applications with backend services and APIs
Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience