Top 21 It systems engineer Jobs in Flagstaff Az

Linux Kernel Engineer
Specialized Recruiting Group —United States
- $175,000 - $300,000 a year
- Full-time
- Remote
- Mentoring
- Senior level
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Senior Network Engineer - CONUS
Computer World Services —United States
- Full-time
- Hybrid work
- Windows
- Bachelor's degree
- Mentoring

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Linux Kernel Engineer

Specialized Recruiting Group -
United States

Quick Apply

Job Details

Full-time
$175,000 - $300,000 a year

Qualifications

OS Kernels
C
Release management
Distributed systems
IP networking
Shell Scripting
Debugging

Full Job Description

ABOUT THE ROLE:

We are seeking a Principal / Senior level engineer with deep Linux kernel expertise to own testing, validation, and quality strategy for the custom Linux kernel that powers our global cloud and CDN platform. This is not a traditional QA automation role. We need someone who can operate at the kernel level: investigating difficult low-level issues, debugging kernel behavior, and identifying root causes of performance, stability, and security problems across drivers, memory management, networking, storage, and virtualization. You will design and build the testing infrastructure needed to validate kernel behavior at scale, from single-machine driver and filesystem tests to complex multi-machine, distributed test scenarios.

KEY RESPONSIBILITIES:

Own testing, validation, and quality strategy for our custom Linux kernel
Lead the annual kernel upgrade lifecycle: adopting new Linux Long-Term Support (LTS) kernels, rebasing our custom modifications, porting internal features, executing validation testing, running pilot deployments, resolving discovered issues, and rolling out broadly
Investigate and debug complex kernel-level issues, identifying root causes of performance, stability, and security problems across drivers, memory management, networking, storage, and virtualization subsystems
Design tests and build regression suites — for example, when a driver has corrupted a filesystem under certain conditions, investigate the root cause, reproduce the failure, and design a permanent regression test to ensure future kernels don't reintroduce the issue
Architect and build automated testing infrastructure for single-machine tests (driver, storage, filesystem, and basic kernel functionality validation) and multi-machine, distributed tests (load balancing, networking, CDN traffic flows, distributed systems behavior, compute platform workloads)
Build tooling to provision test machines, configure environments, run distributed tests, capture results, tear down environments, and return hardware to the test pool
Set quality standards, influence architecture decisions, and mentor engineers as a technical leader on the team

REQUIRED QUALIFICATIONS:

Linux Kernel Internals: Deep, hands-on experience with kernel internals, including KVM, virtio, memory management, cgroups, the TCP/IP stack, Ethernet drivers, file systems, and block I/O
C Programming: Significant experience reading, understanding, debugging, and potentially modifying kernel code — not simply reading it
Linux Debugging Tools: Proficiency with tools such as crash, perf, ftrace, eBPF, kernel logs, and tracing tools
Experience: 10–15+ years in Linux kernel engineering, systems software development, infrastructure/platform engineering, kernel validation and testing, or performance engineering

PREFERRED QUALIFICATIONS:

Python: Preferred language for building automation and test tooling
Shell Scripting: Comfortable scripting in Linux environments
Perl: Important due to our existing codebase. Candidates strong in Python and Shell who are willing to learn Perl are welcome to apply

NICE TO HAVE:

CI/CD experience (Jenkins, GitLab CI, or similar build systems) — note that this is not primarily a CI pipeline role

WHAT WE'RE LOOKING FOR:

A proactive self-starter who identifies issues and proposes solutions rather than waiting for assignments
Deep technical curiosity and genuine enjoyment of diving into hard, ambiguous problems at the kernel level
Comfort working with high autonomy in a fully remote environment
Demonstrated technical leadership: setting standards, influencing architecture, and mentoring other engineers

WHAT TO EXPECT IN THE INTERVIEW PROCESS:

Linux Kernel Fundamentals: Scheduling, memory management concepts, device drivers, and the networking stack
Troubleshooting Stories: Your most difficult kernel bug, a production outage investigation, a performance bottleneck root-cause analysis, or a driver issue investigation
Automation & Test Design: How you would design a distributed test framework, validate a new kernel release, or build regression testing for a hardware driver issue
Programming: C experience, Python/Shell scripting, and any exposure to Perl

Pay: $175,000.00 - $300,000.00 per year

Work Location: Remote

Quick Apply

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it systems engineer jobs in flagstaff az

Linux Kernel Engineer

Senior Network Engineer - CONUS

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