Offensive Security (Mobile) £65-75k DOE Hybrid Working (UK) We''re working with an innovative UK technology company operating at the forefront of digital identity and biometric security. As their security function continues to grow, they''re looking to appoint an experienced Offensive Security Engineer with a strong focus on mobile application security.The Opportunity: You''ll take ownership of sophisticated red team and mobile security assessments across iOS and Android environments, simulating real-world attack scenarios to identify vulnerabilities before they can be exploited.The role combines hands-on offensive testing, exploit development, research into emerging threats, and close collaboration with engineering teams to ensure vulnerabilities are remediated effectively.This position would suit someone who enjoys reverse engineering, breaking mobile protections, and staying ahead of evolving threats in areas such as biometrics, authentication, and device compromise.Key Responsibilities: Conduct advanced mobile application penetration testing across iOS and AndroidPerform reverse engineering, runtime manipulation, and instrumentation attacksSimulate realistic adversarial scenarios including:Rooted and jailbroken devicesEmulator and Frida-based attacksCertificate pinning bypassSession manipulation and API abuseBiometric spoofing and presentation attacksIdentify weaknesses in authentication, cryptographic controls, and mobile architecturesDevelop proof-of-concept exploits an