Senior Linux Kernel Engineer – Security & eBPF

ThreatLocker Inc.; Blanchardstown; On-site; EUR 90,000 - 140,000; Full time

Job summary

ThreatLocker Inc. is hiring a Linux Kernel Developer in Blanchardstown, Dublin, IE to design, develop, debug, and maintain low-level Linux components powering our endpoint security platform.

You will work across multiple Linux distributions and architectures, contributing to kernel modules, eBPF tooling, and system-level functionality. 5+ years of software development experience and deep knowledge of Linux kernel internals are 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.

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

C/C++

Linux kernel internals

eBPF

Kernel debugging

Multi-distro support

Concurrency

Memory management

Networking

System architecture

Tools

Linux packaging

Job description

ThreatLocker Inc. is hiring a Linux Kernel Developer in Blanchardstown, Dublin, IE to design, develop, debug, and maintain low-level Linux components powering our endpoint security platform.

You will work across multiple Linux distributions and architectures, contributing to kernel modules, eBPF tooling, and system-level functionality. 5+ years of software development experience and deep knowledge of Linux kernel internals are required.