Senior MacOS Internals Lead Engineer

I’m helping SUR find a top candidate to join their team full-time for the role of Senior MacOS Internals Lead Engineer.

You will shape the future with groundbreaking innovation.

Compensation:

USD 10K - 15K/month

Location:

Remote: Israel

Mission of SUR:

"Our mission is to help companies unlock the power of top LATAM talent to build high-performing, long-lasting teams."

What makes you a strong candidate:

• You have +7 years experience in Swift, Session Initiation Protocol (SIP), Reverse engineering, Objective-C, Endpoint security.
• English - Conversational

Responsibilities and more:

Description

As a Senior macOS Internals Lead Engineer, you will drive the development of low-level security and compatibility functionality. You will lead a team of exceptional engineers while remaining deeply hands-on-writing code, reverse engineering OS behavior, and directly owning key system-level components.

What You Will Do:

* Design and implement security features using macOS frameworks such as Endpoint Security and Network Extensions.

* Reverse engineer macOS internals and application interactions to enhance product compatibility and security.

* Develop, debug, and optimize complex system-level code in C++, Swift, and Objective-C, adhering to secure coding best practices.

Investigate and resolve issues related to macOS system extensions, launch services, XPC, and sandboxing.

* Act as a force multiplier by reviewing team designs and code, offering architectural direction, and coaching team members on best practices.

* Document technical findings, architectural designs, and implementation details

* Collaborate with QA, product, and support teams to ensure high-quality, secure, and testable deliverables.

* Stay updated on macOS updates and security mechanisms in order to inform development.

Requirements

* 7+ years of systems programming experience with a focus on macOS internals, frameworks, and security

* Proven track record of delivering complex macOS features to productions with hands on coding in C++, Swift, Objective-C

* Deep expertise in macOS frameworks, including Endpoint Security, Network Extensions, Accessibility, Launch Services, File Providers, daemons, XPC and FSEvents

* Advanced skills in reverse engineering MacOS components using tools like Ghidra, Frida,IDA, Hopper, lldb or other tools of your choice. You’re not afraid to look at XNU sources.

* Strong understanding of macOS security mechanisms, including TCC, SIP, Gatekeeper.

Experience with debugging complex architectures on MacOS (system extensions, endpoint security, network extensions, launch services, XPC).

* Ability to produce high-quality, testable, maintainable and secure code.