We are looking for an exceptional iOS Security Engineer with deep expertise in hardened iOS builds, secure OS customization, and advanced mobile threat defence. You will help design, build, and maintain a military‑grade iOS security stack, ensuring device integrity, resilience, and resistance against adversarial threats in high‑risk environments. This is a highly technical role requiring strong OS‑level understanding, reverse engineering skills, and hands‑on experience in securing iOS beyond standard enterprise MDM controls.
Key Responsibilities
- Design and implement custom hardened iOS configurations, profiles, and secure system policies
- Lock down system components, APIs, and services to reduce attack surface
- Develop and maintain secure boot, root‑of‑trust, and code integrity frameworks
- Implement protections against jailbreaking, tampering, and privilege escalation
- Work with platform engineers to create security‑first system architectures (kernel, sandboxing, entitlement control).
- Define security baselines, configuration frameworks, and compliance policies
- Integrate secure communication protocols, encrypted storage, and secure key‑management flows
3. Threat Defense & Detection
- Build and implement real‑time threat detection, anomaly monitoring, and behavioral security controls for iOS
- Develop anti‑exfiltration measures and forensic‑resistant logging
- Conduct adversarial simulations, penetration tests, and exploit analysis on iOS systems
4. Reverse Engineering & Vulnerability Analysis
- Perform static and dynamic analysis on iOS binaries, frameworks, and 3rd‑party SDKs
- Reverse engineer iOS components to detect vulnerabilities or undocumented behavior
- Track CVEs, zero‑days, and Apple security updates relevant to hardened deployments
- Build internal security libraries, hardened communication modules, and secure wrappers
- Work with iOS app engineering teams to enforce secure coding patterns
- Support the development of compartmentalised secure workspaces and sandboxed environments
Required Skills & ExperienceTechnical SkillsExperience & Expertise
- 5–10+ years in iOS Security, OS Hardening, Mobile Security Engineering, or Reverse Engineering
- Deep hands‑on knowledge of:
- iOS internals (kernel, dyld, entitlements, sandboxing, AMFI, code signing)
- MDM, Configuration Profiles, supervised mode, DEP
- Secure boot, device provisioning, and Apple’s security architecture
- Anti‑tamper and jailbreak detection technologies
- Swift, Objective‑C development (secure coding expertise)
- Frida, LLDB, Hopper, IDA Pro, Ghidra or similar RE tools
- Experience with encryption, PKI, certificates, TLS/SSL
- Experience implementing hardened OS images or custom enterprise‑grade controls
Soft Skills
- Strong documentation and technical design abilities
- Ability to work in high‑security, confidential, or regulated environments
- Excellent problem‑solving and threat‑modelling skills
- Comfortable collaborating with cloud, backend, MDM, and compliance teams
Preferred (Bonus) Experience
- Experience working on government, defense, or telecom‑grade mobile security systems
- Exposure to end‑to‑end encrypted communication systems
- Background in zero‑trust mobile security architecture
- Knowledge of mobile SIGINT, anti‑surveillance tools, or hardened smartphone design
- Experience with Corellium or similar iOS virtualization/testing platforms
How to Apply
Submit your resume and a cover letter outlining your experience
#J-18808-Ljbffr