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Coltech

iOS Developer

Actively Reviewing

Coltech

4–8 yrs exp Posted 2 weeks ago  · Apply by Aug 25, 2026

iOS Developer – Hybrid (UK)


We are currently seeking an experienced iOS Developer to join a high-profile digital transformation programme within a leading UK financial services organisation.

This is an exciting opportunity to contribute to the development of customer-facing mobile applications used by millions of users, working within a modern engineering environment that embraces Agile delivery, DevOps practices, and cloud-native technologies.


Key Responsibilities

  • Design, develop, and maintain high-quality native iOS applications.
  • Collaborate with product owners, designers, architects, and engineering teams to deliver new features and enhancements.
  • Write clean, maintainable, and testable code following best practices and coding standards.
  • Participate in code reviews and contribute to continuous improvement initiatives.
  • Troubleshoot and resolve application defects and performance issues.
  • Support the delivery of secure, scalable, and resilient mobile solutions.
  • Contribute to technical discussions, architecture decisions, and engineering standards.


Required Skills & Experience

  • Strong commercial experience developing native iOS applications.
  • Excellent knowledge of Swift and modern iOS development practices.
  • Experience with SwiftUI and/or UIKit.
  • Strong understanding of mobile application architecture patterns such as MVVM.
  • Experience consuming RESTful APIs and integrating backend services.
  • Knowledge of CI/CD practices and automated testing.
  • Familiarity with Git-based source control and Agile development methodologies.
  • Strong problem-solving and communication skills.


Desirable Experience

  • Experience working within highly regulated environments such as financial services.
  • Exposure to cloud technologies and modern DevOps practices.
  • Experience with accessibility standards and mobile security best practices.
  • Knowledge of reactive programming frameworks such as Combine.
  • Experience developing applications at enterprise scale.


What's on Offer

  • Opportunity to work on a large-scale digital transformation programme.
  • Collaborative and modern engineering culture.
  • Long-term programme of work with high visibility.
  • Hybrid working arrangement.
  • Competitive day rate/salary depending on experience.


If you are an experienced iOS Developer looking for your next opportunity within a complex enterprise environment, we would be keen to hear from you.