LINUX KERNEL DEVELOPER
COMPANY OVERVIEW:
ThreatLocker® is a global cybersecurity leader that stops cyberattacks before they happen. The company’s Zero Trust Platform prevents breaches from both known and unknown threats by allowing only explicitly trusted software and activity across endpoints, networks, and cloud systems. Built to deploy quickly and scale across complex environments, the platform reduces operational overhead while keeping business running uninterrupted. Headquartered in Orlando, Florida, with offices in Dublin, Dubai, and Brisbane, ThreatLocker protects over 70,000 organizations worldwide.
POSITION OVERVIEW:
ThreatLocker is seeking a Linux Kernel Developer to join our cybersecurity product team. In this role, you will design, develop, debug, and maintain low-level Linux components that support endpoint security, application control, and threat prevention across multiple Linux distributions and architectures.
DEVELOPMENT — Full-Time
This role will be based in Orlando, FL and is an in-office position.
RESPONSIBILITIES:
Develop, debug, test, and maintain Linux kernel-level components using C/C++
Work with kernel modules, eBPF, system calls, filesystems, networking, memory management, and process monitoring
Validate kernel functionality from user space and work with user-space APIs
Debug complex kernel, performance, compatibility, and system-level issues
Support compatibility across Red Hat, Debian, Ubuntu, SUSE, and other Linux environments
Support kernel and platform enablement across x86_64 and ARM64
Contribute to build, packaging, CI/CD, and automated kernel testing processes
Support platform and Linux distribution porting where required
Collaborate with development, QA, DevOps, and security teams
REQUIRED QUALIFICATIONS:
5+ years of software development experience
Strong C/C++ development skills
Strong understanding of Linux kernel internals
Experience with Linux kernel modules and/or eBPF
Experience with processes, scheduling, memory management, concurrency, filesystems, networking, or storage subsystems
Experience debugging kernel and low-level system issues
Strong understanding of computer architecture and system-level software
Experience working across multiple Linux distributions and kernel versions
PREFERRED QUALIFICATIONS:
Experience developing endpoint security, EDR, antivirus, or similar security software
Experience with eBPF-based monitoring or enforcement
Experience with ARM64 and x86_64
Experience with Python for tooling, testing, or automation
Experience with Linux packaging, kernel build systems, and CI/CD
Experience with virtualization technologies such as KVM, VMware, Xen, or Hyper-V
Knowledge of PCIe, DMA, SR-IOV/SIOV, or related low-level system interfaces
Experience contributing to or maintaining upstream Linux kernel code
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.