Mykola Grymalyuk
Product Security Engineer at Apple
Seattle, Washington, United States
Summary
🤩
Rockstar🎓
Top SchoolMykola Grymalyuk is a product security engineer specializing in macOS and iOS platform internals with seven years of hands-on experience in reverse engineering, kernel and driver development, and enterprise device management. He co-founded and led OpenCore Legacy Patcher—an influential project stemming from his vulnerability research that has exceeded 18 million downloads—and has contributed architecturally to key OpenCore and ACPI repositories. His work has produced multiple disclosed CVEs across macOS and third‑party software, and he authors tooling and CI/CD used to build and sign macOS packages for production deployments. Comfortable in Python, Swift, C, Objective‑C, Bash/ZSH and x86_64 assembly, he blends deep low‑level research with practical deployment experience supporting MDM, patch management, and managed services. Based in Seattle, he currently brings this blend of offensive research and systems engineering to Apple’s product security organization.
7 years of coding experience
5 years of employment as a software developer
Information Systems Security Diploma, Information Systems Security Diploma at Southern Alberta Institute of Technology (SAIT)
English, French
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (32)
bootloader10
markdown10
configuration-management10
bash10
opencore10
power-management10
vuepress10
u-boot10
hackintosh10
markdown-it10
boot10
loader10
macos10
documentation10
acpi10
Programming languages (11)
Github contributions (5)
dortania/Getting-Started-With-ACPI
Apr 2020 - Mar 2021
Repo for Getting Started With ACPI
Role in this project:
System Architect / Software Architect
System Architect / Software ArchitectContributions:4 reviews, 140 commits, 34 PRs in 11 months
Contributions summary:Mykola's commits primarily focus on modifying and adding ACPI (Advanced Configuration and Power Interface) files, specifically SSDTs (Supplemental System Description Tables). These changes involve adjusting existing ACPI paths, fixing OEM names, and adding new pre-built SSDTs to support various hardware configurations, including laptops and desktops. The contributions aim to enhance compatibility and functionality related to power management and device configuration within a macOS environment. The user demonstrates proficiency in ACPI and system-level configurations.
acpipython
dortania/OpenCore-Post-Install
Jul 2020 - Jun 2021
https://dortania.github.io/OpenCore-Post-Install/
Role in this project:Technical Writer
Technical WriterContributions:28 reviews, 199 commits, 57 PRs in 11 months
Contributions summary:Mykola primarily contributes to the documentation of the OpenCore Post-Install guide, focusing on the setup and configuration of Hackintosh systems. They added and updated guides for USB mapping, security, multiboot, and other post-install procedures. The user also fixed and updated the configuration files, and organized existing documentation sections, contributing to the overall clarity and completeness of the guide.
dortaniaapple-siliconamdgpumacbook-proopencore
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