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Barclays
Barclays
BankingFinance
Barclays is a UK-headquartered banking and financial services group serving individuals, businesses, institutions and investors. Its businesses span retail and consumer banking, corporate and investment banking, wealth and private banking, capital markets, and a specialist US consumer bank. Barclays also provides digital banking, financial research and insights, and financing programmes focused on sustainability, climate technology and green bonds. With a workforce of more than 10,000 employees, the company operates across consumer, corporate and investment finance under UK financial regulation.
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Senior iOS Engineer, Identity Services

Build native authentication and identity capabilities for Barclays’ mobile banking app, including secure biometric access. Develop modern mobile identity solutions as a senior iOS engineer.

GBUnited KingdomHybridFull-timeSeniorEnglish RequirediOS EngineerSoftware Engineer
AndroidiOSSwift

Description

  • Design and enhance software that supports business, platform, and technology capabilities
  • Build native iOS authentication and identity features for Barclays’ mobile banking app
  • Deliver secure, scalable, maintainable software optimized for performance
  • Work with product managers, designers, backend engineers, security specialists, and fellow engineers
  • Set software requirements and solution approaches, ensuring alignment with business goals
  • Review code and encourage strong engineering practices and knowledge sharing
  • Apply secure coding practices and write effective unit tests
  • Track technology developments and contribute to technology communities
  • Advise stakeholders and senior leaders on functional and cross-functional effects
  • Identify and reduce risks while strengthening controls
  • Develop solutions by analyzing, researching, and evaluating complex options
  • Maintain productive relationships with internal and external stakeholders
  • Help shape technical direction, contribute to multi-year work, and coach less experienced specialists where appropriate

Requirements

  • Extensive iOS development experience and strong knowledge of Swift, the iOS SDK, UIKit, and SwiftUI
  • Demonstrated success delivering high-quality native iOS apps
  • Sound understanding of identity and access management and authentication protocols such as OAuth2 and OIDC
  • Experience connecting to identity and access management backend services through Android SDKs and REST APIs
  • Proficiency with AI-assisted development tools
  • Experience implementing Face ID and Touch ID, keychain services, secure storage, and certificate pinning
  • Experience with MVVM or Clean Architecture, dependency injection, XCTest, UI testing, and mobile CI/CD pipelines
  • Expertise in secure mobile development, including code obfuscation, runtime protection, jailbreak detection, and mobile app security testing
  • Experience integrating the Ping Identity SDK and building custom authentication journeys
  • Experience with mobile DevOps, app store releases, and feature flags or gradual rollout approaches
  • Knowledge of FIDO2/WebAuthn, passkeys, and passwordless authentication on iOS
  • Background in performance tuning, memory management, and debugging complex iOS apps
  • Familiarity with financial services mobile apps, regulatory requirements, and banking security standards
  • Ability to work from the Knutsford or London offices with flexible hybrid arrangements

Benefits

  • Flexible hybrid work arrangements
  • A culture shaped by Barclays’ Values and Mindset
  • Chances to take part in technology communities and share knowledge
  • Professional guidance, training, coaching, and development opportunities

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