Senior Mobile Security Developer - Contract (Inside IR35)

Added 21/09/2026

We are seeking a Senior Mobile Security Developer to support the design, development and assurance of secure mobile applications within a complex technology environment. This is a contract opportunity operating inside IR35, suited to an experienced security-focused software engineer who can combine hands-on development expertise with a strong understanding of mobile application security, secure architecture and risk management. You will work across the mobile development lifecycle, helping teams identify and address security risks from initial design through to release and ongoing maintenance. Responsibilities will include performing threat modelling and security reviews, assessing Android and iOS applications, reviewing source code, identifying...

Senior Mobile Security Developer

Added 02/10/2026

We are seeking a Senior Mobile Security Developer to lead the design, development and continuous improvement of secure mobile applications and supporting services. You will work closely with software engineers, product specialists, architects and security professionals to embed security throughout the mobile development lifecycle. The role will involve assessing threats, defining security requirements, reviewing technical designs and ensuring that applications are resilient against evolving attack techniques across iOS and Android platforms. Your responsibilities will include developing and maintaining secure mobile components, libraries and application features; conducting code reviews and security testing; investigating vulnerabilities; and supporting remediation from discovery through to...

Senior Mobile Security Developer

Added 18/09/2026

We are seeking a Senior Mobile Security Developer to strengthen the security of mobile applications and services across iOS and Android platforms. In this role, you will design, implement and maintain secure mobile solutions, embed security throughout the software development lifecycle, and help protect sensitive data, user identities and application functionality. You will work closely with mobile engineers, backend developers, architects, product teams and security specialists to identify risks and deliver practical, resilient solutions. Your responsibilities will include defining mobile security standards, reviewing application architecture and source code, conducting threat modelling, and identifying vulnerabilities through manual testing and automated analysis....

SC CLEARED SECURITY ARCHITECT | OUTSIDE IR35 | REMOTE

Added 17/09/2026

We are seeking an experienced SC Cleared Security Architect for a remote contract opportunity, operating outside IR35. The successful candidate will provide security architecture expertise across complex technology and business change programmes, helping to ensure that solutions are secure, resilient, compliant and aligned with organisational risk appetite. You will work with technical and business stakeholders to define practical security strategies and translate requirements into clear, implementable designs. Responsibilities will include developing and maintaining security architectures, principles, patterns and standards; conducting threat, risk and impact assessments; and producing high-quality security documentation for design reviews and governance forums. You will assess proposed...

Security Engineer – SecOps / Incident Response & Automation (GBP 350 per day outside IR35)

Added 03/09/2026

We are seeking an experienced Security Engineer to support Security Operations, Incident Response and security automation within a fast-paced technology environment. This contract opportunity offers a rate of GBP 350 per day, outside IR35, and is suited to a hands-on practitioner who can investigate security events, coordinate effective responses and improve the efficiency of operational security processes. The successful candidate will monitor, triage and investigate alerts from SIEM, endpoint detection and response, identity, cloud and network security platforms. You will lead or support the response to security incidents, including scoping impact, analysing logs and indicators of compromise, containing threats, coordinating...

Senior Mobile Security Technical Specialist

Added 09/10/2026

We are seeking a Senior Mobile Security Technical Specialist to lead the design, implementation and continuous improvement of security controls across mobile applications, devices and supporting platforms. You will provide technical expertise throughout the software development lifecycle, from architecture and threat modelling through to testing, release and operational monitoring. Working closely with engineering, product, infrastructure and risk teams, you will help ensure that mobile services are resilient, privacy-conscious and aligned with recognised security standards. Your responsibilities will include conducting mobile application security assessments, code reviews, penetration tests and vulnerability investigations across iOS and Android environments. You will develop practical remediation...

Mobile Application Senior Security Engineer

Added 01/09/2026

We are seeking a Mobile Application Senior Security Engineer to strengthen the security of mobile products and services across their full development lifecycle. You will work closely with mobile developers, architects, product managers, and security specialists to identify risks, design resilient solutions, and embed secure engineering practices into iOS and Android applications. This role is suited to an experienced security professional who can combine hands-on technical expertise with the ability to influence teams and improve security maturity. Your responsibilities will include conducting mobile application security reviews, threat modelling, architecture assessments, code reviews, and penetration testing. You will investigate vulnerabilities, assess...

Mobile Security IOS

Added 12/10/2026

We are seeking a Mobile Security IOS specialist to help protect mobile applications, devices, data and supporting services across the software development lifecycle. In this role, you will work closely with iOS engineers, architects, product teams and security professionals to identify risks and build secure, resilient mobile experiences. You will contribute to security strategy, technical standards and practical guidance while ensuring that security requirements are integrated into design, development, testing and deployment activities. Your responsibilities will include performing secure code reviews of Swift and Objective-C applications, assessing authentication, authorisation, encryption, data storage, networking and third-party software components. You will conduct...

Mobile Security Engineer

Added 02/10/2026

We are seeking a Mobile Security Engineer to help protect mobile applications, services, and supporting infrastructure throughout the software development lifecycle. You will work closely with mobile developers, platform engineers, product teams, and security specialists to identify risks, strengthen security controls, and promote secure engineering practices across iOS and Android environments. Your responsibilities will include conducting security assessments, threat modelling, code reviews, and penetration testing of mobile applications and APIs. You will analyse vulnerabilities, validate findings, recommend practical remediation, and support teams in resolving issues to an appropriate standard. You will also help develop secure coding guidance, security testing procedures,...

Mobile Security Engineer

Added 25/09/2026

We are seeking a Mobile Security Engineer to help protect mobile applications, platforms, and supporting services against evolving cyber threats. In this role, you will work across the software development lifecycle to embed security into the design, development, testing, and release of iOS and Android applications. You will collaborate with mobile developers, platform engineers, product teams, and security specialists to identify risks, define practical controls, and deliver secure, reliable customer experiences. Your responsibilities will include conducting mobile application threat modelling, security reviews, and source-code assessments; identifying vulnerabilities in native and cross-platform applications; and supporting penetration testing and remediation activities. You...

Mobile security Engineer

Added 15/09/2026

We are seeking a Mobile Security Engineer to help protect mobile applications, devices, services, and supporting infrastructure throughout the development lifecycle. You will work closely with software engineers, architects, product teams, and security specialists to identify risks, design effective controls, and ensure security is built into mobile products from the outset. The role will involve assessing Android and iOS applications, reviewing source code and architecture, analysing application behaviour, and supporting the resolution of vulnerabilities. Your responsibilities will include conducting mobile application security assessments, penetration tests, threat modelling exercises, and code reviews; developing security requirements and reusable guidance for mobile engineering...

Software Engineer - Mobile Security

Added 02/09/2026

We are seeking a Software Engineer - Mobile Security to design, build and improve secure mobile applications and security-focused platform components. You will work across the software development lifecycle, from technical discovery and architecture through implementation, testing, release and ongoing maintenance. The role will involve developing robust solutions for iOS and/or Android, identifying potential vulnerabilities, and helping ensure that mobile products protect user data and withstand evolving security threats. Your responsibilities will include implementing secure coding practices, reviewing application designs, conducting code and threat assessments, and collaborating with engineering teams to remediate security issues. You will contribute to authentication, authorisation,...