Description
COMPANY OVERVIEW
ThreatLocker® is a leader in endpoint protection technologies, providing enterprise-level cybersecurity tools to improve the security of servers and endpoints. The ThreatLocker® platform with Application Allowlisting, Ringfencing™, Storage Control, Elevation Control, Endpoint Network Control, Configuration Management, and Operational Alert solutions are leading the cybersecurity market toward a more secure approach of blocking the exploits of application vulnerabilities.
POSITION OVERVIEW
ThreatLocker is seeking a skilled macOS Developer to help build, enhance, and maintain the macOS components of the ThreatLocker endpoint security platform. This role is responsible for developing secure, reliable endpoint software that powers ThreatLocker's Zero Trust architecture across enterprise environments. The successful candidate will implement and maintain functionality supporting Application Allowlisting, Ringfencing™, Storage Control, Elevation Control, Endpoint Network Control, and other products within the ThreatLocker portfolio, helping enforce Zero Trust, least privilege, application control, privilege management, storage protection, and network security.
The ideal candidate will have strong macOS development experience, a deep understanding of Apple's security frameworks, and a security-first mindset. They should be comfortable developing complex system-level software, possess excellent debugging and problem-solving skills, take ownership of product quality, and be able to balance security, performance, reliability, and usability while delivering enterprise-grade solutions.
The role will be based in Orlando, FL and is an in-office position.
JOB SCOPE
- 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.
- Optimize application performance, reliability, scalability, and security across supported macOS versions.
- Diagnose and resolve complex issues involving system permissions, security frameworks, networking, and enterprise deployments.
- Research new macOS platform features, security changes, and OS updates to ensure continued compatibility and protection.
- Collaborate with cross-functional engineering teams to deliver new features and continuously improve the ThreatLocker platform.
- Take ownership of product quality by identifying, troubleshooting, and resolving complex issues while continuously improving performance, reliability, and security.
- Solid understanding of macOS architecture, security controls, application lifecycle and system extensions.
- Experience with Apple frameworks such as Endpoint Security, Network Extension, Network.framework, Security, SystemConfiguration, or related system APIs.
- Strong knowledge of operating-system concepts, including processes, threads, memory management, interprocess communication, file systems, and permissions.
REQUIRED 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.
- Excellent analytical, troubleshooting, and problem-solving skills with strong attention to detail.
PREFERRED QUALIFICATIONS
- Experience with C and/or C++.
- Experience with Apple's Endpoint Security Framework, Network Extension Framework, or System Extensions.
- Experience developing endpoint protection, application control, endpoint detection and response (EDR), device control, or other cybersecurity software.
- Experience with code signing, notarization, provisioning profiles, and macOS application deployment.
- Familiarity with enterprise device management (MDM) solutions and Apple Business Manager.
- Knowledge of macOS internals, process management, networking, and filesystem security.
- Experience developing endpoint detection and response, application control, Zero Trust, antivirus, firewall, VPN, or other endpoint-security products.
- Hands-on experience with the macOS Endpoint Security framework and Network Extension providers.
- Experience working with Swift, C, C++, Objective-C, SQLite, POSIX APIs, or low-level Darwin interfaces.
WORKING CONDITIONS
The duties described below are representative of those encountered while performing the essential functions of this position. If necessary, reasonable accommodation may be requested and will be evaluated for its relationship to the essential functions that must be performed.
- Job will generally be performed in an office environment but may require travel to visit company offices and/or property locations.
- While performing duties of this job, would occasionally require to stand, walk, sit, reach with hands and arms, climb or balance, stoop or kneel, talk and hear, and use fingers and hands to feel objects and tools.
- Must occasionally lift and/or move up to 30pounds.
- Specific vision abilities required include close vision, distance vision, depth perceptions, and the ability to adjust focus.
A background check and drug/substance screening are required after a conditional offer. Employment will proceed only upon receiving clear results from both.
ThreatLocker also conducts randomized drug and substance testing approximately every 60 days, in line with the same screening standards.
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