Endpoint Jobs

Sign in to Endpoint Jobs

Save jobs, keep your filters, and hide what you've seen.

By continuing you agree to the Privacy policy

Oct 31, 11:21 AM UTC
Himalayas

macOS Endpoint Security Engineer

Inabia Software & Consulting Inc.

Role: Senior macOS Cyber Security Engineer, Endpoint Security (C++/Swift) Location: Remote (PST working hours) Client: Accenture/Amazon Work Authorization: U.

Apply for this roleBrowse all roles
Role overview

Job description

Client : Accenture/Amazon

Work Authorization: U.S. Citizen (USC) or Green Card (GC) holders only

Requirement Type : Contractual

  • Experience : 6-10 years, we can evaluate more senior as well but need to build a pyramid.
  • W-2 Rate: $65 - $70/hr.
  • J ob Description:

About the work

You'll work on the macOS sensor for CrowdStrike Falcon, an on-device security agent. It monitors file, process, network and identity activity, blocks malicious behavior, and streams telemetry to the cloud. The sensor runs entirely in user space as a System Extension. Much of the code is shared with Windows and Linux. The work requires high concurrency, high reliability, careful attention to memory & CPU usage and performance.

Required

  • Languages: modern C++ (C++17/20) and Swift 6 (async/await, actors, strict concurrency checking). Also Objective-C++ to bridge Swift, C++ and C APIs.
  • macOS systems programming: Foundation and CoreFoundation, GCD and pthreads, POSIX/BSD APIs, Mach IPC, launchd daemons and agents, and XPC (C API and NSXPC
  • Connection).

· Performance, debugging and test:

o Profiling CPU and memory with Instruments and os_signpost.

o Debugging with LLDB, crash logs and os_log.

  • o XC
  • Test, sanitizers, fuzzing, and xcodebuild-based CI.

o Apple Silicon and Intel.

  • Experience with codebases shared across Mac, Windows and Linux.

Core skills (one or more of the areas listed below)

  • Process model and IPC: launchd daemons and agents, and XPC (C API and NSXPC
  • Connection).
  • Endpoint Security and System Extensions: Endpoint Security clients handling both blocking (AUTH) events and notification events, user/MDM approval, upgrades.
  • Network Extension: content filters, both flow-level (NEFilterDataProvider) and packet-level (NEFilterPacketProvider), and Network.framework.
  • Security and crypto: Verifying code signatures (SecCode / SecStaticCode) and validating certificates (SecTrust), Keychain, Entitlements, hardened runtime, and macOS privacy permissions.
  • Devices and storage: IO
  • Kit (hardware and device enumeration) and DiskArbitration (disk and volume events).
  • Packaging and deployment: installers, notarization, and MDM configuration profiles deployed through Jamf, Intune or similar tools.
  • Performance, debugging and test: Profiling CPU and memory with Instruments and os_signpost, Debugging with LLDB, crash logs and os_log, XC
  • Test, sanitizers, fuzzing, and xcodebuild-based CI.

Nice to have

  • UI: SwiftUI and AppKit apps and app extensions.
  • Testing against macOS and Xcode betas before public release.
  • Experience shipping EDR/AV, network security or device-management products.

Originally posted on Himalayas