Security Software Engineer
Manpower Austin, TX
Pay not stated
The employer link is source-provided and is not live-verified by Applydra.
About the role
**Experience** : 7-10 years, we can evaluate more senior as well but need to build a pyramid.
**Location:** Remote (PST working hours)
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 NSXPCConnection).
+ Performance, debugging and test:
+ Profiling CPU and memory with Instruments and os_signpost.
+ Debugging with LLDB, crash logs and os_log.
+ XCTest, sanitizers, fuzzing, and xcodebuild-based CI.
+ 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 NSXPCConnection).
+ 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: IOKit (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, XCTest, 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
ManpowerGroup is committed to providing equal employment opportunities in a professional, high quality work environment. It is the policy of ManpowerGroup and all of its subsidiaries to recruit, train, promote, transfer, pay and take all employment actions without regard to an employee's race, color, national origin, ancestry, sex, sexual orientation, gender identity, genetic information, religion, age, disability, protected veteran status, or any other basis protected by applicable law.
Posting text as published by Manpower.
The evidence behind this listing
- Workplace
- Remote Matched in posting text
- Seniority
- Not established
- Employment type
- Not established
- Location as listed
- Austin, TX
Pay and work authorization
- Stated pay
- Not stated
- Visa sponsorship
- Not stated
- Security clearance
- Not established
- Citizenship
- Not established