MacOS Endpoint Security Engineer

ThreatLocker Inc.; Orlando, Northern (FL, KY); Hybrid; USD 110,000 - 170,000; Full time

Job summary

ThreatLocker Inc. is seeking a skilled macOS Developer to build, enhance, and maintain the macOS components of the ThreatLocker endpoint security platform.

The role focuses on secure, reliable system-level software powering a Zero Trust architecture across enterprise environments, with emphasis on Application Allowlisting, Ringfencing, and Storage Control. The ideal candidate will have strong macOS development experience, Apple security framework knowledge, and a security-first mindset.

Qualifications

• 2+ years of professional macOS software development experience.
• Strong proficiency in Swift and Objective-C.
• Experience developing macOS applications, agents, services, system components, or endpoint software.
• Experience working with APIs, local storage, logging, and secure client-server communication.
• Ability to troubleshoot complex macOS issues involving permissions, networking, System Extensions, and enterprise deployments.
• Strong understanding of secure coding practices.
• Ability to write clean, maintainable, production-quality code.
• Experience using source control systems such as Git.

Responsibilities

• Design, develop, test, and maintain ThreatLocker’s macOS endpoint agent and supporting components.
• Develop secure macOS services, background processes, System Extensions, Network Extensions, XPC Services, LaunchDaemons, and user-facing applications.
• Integrate macOS functionality with ThreatLocker’s policy engine, management portal, and cloud platform.
• Develop and maintain real-time policy enforcement for applications, files, storage devices, network activity, and privilege elevation.
• Leverage Apple security technologies including Endpoint Security Framework, Network Extension Framework, System Extensions, XPC Services, and LaunchDaemons.
• Build and improve user interfaces using AppKit and SwiftUI.
• Diagnose and resolve complex issues involving system permissions, security frameworks, networking, and deployments.
• Collaborate with cross-functional teams to deliver new features and continuously improve the ThreatLocker platform.

Job description

ThreatLocker Inc. is seeking a skilled macOS Developer to build, enhance, and maintain the macOS components of the ThreatLocker endpoint security platform.

The role focuses on secure, reliable system-level software powering a Zero Trust architecture across enterprise environments, with emphasis on Application Allowlisting, Ringfencing, and Storage Control. The ideal candidate will have strong macOS development experience, Apple security framework knowledge, and a security-first mindset.