Paradigm Tech
Senior iOS Security Engineer
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🚀 Senior iOS Security Engineer | UK | Remote | £100k base 10% bonus & share options
A leading technology company operating at the forefront of digital identity, biometrics and mobile security is looking for a Senior iOS Security Engineer to join its Product Security team. This is a specialist opportunity for an iOS engineer who enjoys thinking like an attacker and building the defences to stop them.
What you'll be doing:
- Secure iOS applications and SDKs used in high-security identity and authentication environments
- Design and implement RASP, anti-tampering, anti-debugging and application integrity controls
- Research emerging mobile attack techniques, reverse engineering and runtime manipulation
- Investigate bypass techniques using tools such as Frida and Objection
- Work across iOS internals, Mach-O, entitlements, memory management and Apple security frameworks
- Partner closely with Red Team, Engineering and Science teams
- Conduct security architecture/code reviews and develop security tooling and frameworks
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What we're looking for:
- 3+ years of professional iOS development experience
- 2+ years in mobile, application or product security
- Strong Swift expertise and deep knowledge of iOS internals
- Hands-on experience with mobile application hardening and RASP
- Understanding of OWASP MASVS / Mobile Top 10 and secure SDLC
- Experience with dynamic instrumentation, jailbreak environments and runtime hooking
- Strong understanding of cryptography, authentication and secure communications
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Bonus points for:
- 🔹 Biometric or identity verification experience
- 🔹 Securing mobile SDKs embedded in third-party applications
- 🔹 Building custom RASP capabilities
- 🔹 Device attestation / runtime trust technologies
If you're an iOS engineer with a genuine security mindset and want to work on challenging problems involving mobile security, biometrics and evolving AI-driven threats, I'd be interested in hearing from you.
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