LINUX KERNEL DEVELOPER

ThreatLocker; Orlando (FL); On-site; USD 120,000 - 180,000; Full time

Job summary

ThreatLocker Inc. is seeking a Linux Kernel Developer to design, develop, debug, and maintain low-level Linux components supporting endpoint security across Linux distributions. You will work on kernel modules, eBPF, and system interfaces, interfacing with user-space APIs and QA teams.

This in-office Orlando role emphasizes security-focused kernel work. The ideal candidate has 5+ years of software development experience, deep knowledge of Linux kernel internals, and a track record across

Qualifications

• 5+ years of software development experience.
• 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.

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

Skills

Linux kernel internals

Kernel modules

eBPF

Concurrency

System architecture

Tools

CI/CD

Kernel build tools

Virtualization

Job description

If you are unable to complete this application due to a disability, contact this employer to ask for an accommodation or an alternative application process.

LINUX KERNEL DEVELOPER

DEVELOPMENT Full Time Orlando, FL, US

2 days ago Requisition ID: 1059

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 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.