MacOS Vulnerability Researcher
3 days ago
Location: Remote (Open globally)
Engagement: [Permanent / Long-term Contract]
Start: ASAP
Compensation: Competitive, based on experience
Recruiting on behalf of a confidential client
We're recruiting on behalf of a confidential client for an experienced macOS Vulnerability Researcher. This role focuses on low-level system internals and kernel exploitation across Apple platforms, particularly macOS and Apple Silicon (ARM64).
The ideal candidate will have proven experience in discovering vulnerabilities, reverse engineering system components, and developing proof-of-concept exploits targeting the XNU kernel, IOKit, and related subsystems.
This is a rare opportunity to work with a world-class R&D team solving cutting-edge offensive security challenges.
Key ResponsibilitiesConduct vulnerability research on macOS internals, including XNU, IOKit, and kernel extensions
Reverse engineer system components, drivers, and secure enclaves to uncover attack surfaces
Analyze patch diffs and develop novel bug chains or rediscovery paths
Build and document PoC exploits for vulnerabilities such as LPEs, sandbox escapes, and mitigation bypasses
Track Apple's evolving security architecture and explore ways to bypass PAC, SIP, KASLR, AMFI, etc.
Write technical reports and collaborate with a small, highly skilled research team
Strong background in macOS or iOS vulnerability research
Expertise in reverse engineering, using tools like IDA Pro, Ghidra, LLDB, or Hopper
Deep understanding of Apple platform internals: XNU, Mach-O, KEXTs, IOKit, etc.
Low-level programming experience in C/C++, ARM64 assembly, and Python
Experience developing or maintaining custom fuzzers or dynamic analysis tools
Familiarity with Apple Silicon architectures (M1/M2/M3) and security mitigations
Prior CVEs, exploit writeups, or conference talks are a plus
iOS kernel or jailbreak research experience
Contributions to open-source offensive tooling or fuzzing frameworks
Familiarity with virtualization-based analysis, snapshot fuzzing, or persistent fuzzing harnesses
Public research blogs, presentations, or technical advisories
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