Software Engineer (Mobile Security)

Software Engineer - Mobile Security 12-Month Contract Bristol (Hybrid - 2-3 days per week onsite) £500-£850 per day Inside IR35 - Ratedetermined by experience We're looking for Mobile Security Engineers to join a Digital Frameworks team responsible for building and maintaining the secure Android and iOS frameworks that support mobile applications across a large enterprise environment.

This role sits at the intersection of mobile software engineering and application security. You'll help design and develop reusable SDKs, libraries and framework components that enable product teams to deliver secure, scalable and high-performing mobile applications.

We're interested in speaking with engineers from Android, iOS or mobile platform backgrounds, with opportunities available across multiple levels of experience. Key Requirements Commercial experience developing mobile applications using Kotlin/Android and/or Swift/iOS Strong understanding of mobile application security principles Experience implementing authentication, encryption and secure storage solutions Knowledge of secure coding practices and vulnerability remediation Experience developing reusable SDKs, frameworks or shared platform components Ability to work within modern engineering environments using CI/CD and automated testing practicesWhat You'll Be Doing Designing, developing and maintaining secure Android and iOS framework components and SDKs Building mobile security capabilities including authentication, encryption and device integrity controls Developing reusable libraries and platform services used across multiple applications Supporting threat modelling exercises and security design reviews Identifying and remediating security vulnerabilities Implementing secure coding standards and engineering best practice Contributing to test automation and CI/CD pipelines Collaborating with engineering, architecture and security teams Driving continuous improvements in mobile security standards and practicesTechnical Skills Mobile Development Kotlin Android Swift iOS SwiftUI UIKit Jetpack Android SDK Swift Package ManagerMobile Security OWASP Mobile Top 10 OWASP MASVS Mobile Application Security Secure Coding Threat Modelling Authentication & Authorisation Encryption Secure Storage Certificate Pinning Biometrics Android Keystore iOS Keychain Device Integrity ControlsTesting & Security Tooling JUnit XCTest Espresso XCUITest Static Analysis Dependency Scanning Penetration Test RemediationCI/CD & DevOps Git GitHub Actions Jenkins Bitrise Fastlane CI/CD PipelinesAPIs & Identity REST APIs OAuth 2.0 OpenID Connect API SecurityDesirable Experience Financial Services, FinTech or regulated industries Digital Identity or Authentication products Shared Platform, SDK or Framework development Mobile security testing tools such as MobSF or Frida Security certifica...

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