Job Title: Mobile Security Engineer (Contract)

Location: Bristol (Hybrid – 2 days onsite per week)

Contract Length: 6 months

Day Rate: £450/day (Inside IR35)

Overview

We are looking for an experienced Mobile Security Engineer to join a large-scale financial services programme. You’ll play a key role in strengthening mobile application security, reviewing security posture, implementing best practices, and contributing to the development of secure mobile tooling.

Key Responsibilities

• Perform regular reviews and assessments of mobile application security posture.
• Conduct hands-on mobile platform security testing, threat modelling, and implementing mitigation strategies.
• Develop and maintain mobile-focused penetration testing tools, scripts, policies, and procedures.
• Ensure alignment with mobile app security standards across Android and iOS environments.

Essential Skills & Experience

• Proven experience in mobile security engineering.
• Strong knowledge of mobile platform security, threat modelling, and mitigation frameworks.
• Hands-on experience conducting mobile application security assessments.
• In-depth understanding of Android/iOS mobile security standards.
• Ability to develop or customise security tools for mobile environments.

Desirable Skills

• Experience with mobile app development and DevSecOps tooling.
• Familiarity with mobile automation or security testing frameworks.
• Strong understanding of authentication, authorisation, encryption, and cryptography patterns.
• Up-to-date awareness of emerging mobile security technologies and trends.

Working Model

• Hybrid: 2 days per week onsite in Bristol
• Inside IR35 contract

If you are a Mobile Security Engineer seeking your next project, we would love to hear from you.