Junior Operating Systems Engineer (Embedded Linux / Yocto)

Job Description Junior Operating Systems Engineer (Embedded Linux / Yocto) Full time San Diego, CA – On-Site

*This position requires an active U.S. national security clearance. To learn more about the security clearance process please access this
link
.

Duties and Responsibilities
Build and maintain custom Linux images using the Yocto Project (recipes, layers, BitBake, kernel configuration)
Support an immutable, A/B-updatable OS image architecture, including secure boot and update tooling
Package, integrate, and troubleshoot system services, drivers, and third-party software on embedded x86 hardwar
Contribute to OS hardening efforts (FIPS mode, secure boot, compliance-driven configuration)
Debug boot, kernel, driver, and userspace issues on real appliance hardware
Use generative AI tools daily to accelerate development: writing and reviewing recipes, generating test scaffolding, drafting documentation, and debugging build failures
Write clear documentation for build processes, image releases, and provisioning workflows

Required Qualifications Currently holds an active U.S. national security clearance or be able to receive and maintain one. To learn more about the security clearance process please access this link .

Build and maintain custom Linux images using the Yocto Project (recipes, layers, BitBake, kernel configuration)
Support an immutable, A/B-updatable OS image architecture, including secure boot and update tooling
Package, integrate, and troubleshoot system services, drivers, and third-party software on embedded x86 hardwar
Contribute to OS hardening efforts (FIPS mode, secure boot, compliance-driven configuration)
Debug boot, kernel, driver, and userspace issues on real appliance hardware
Use generative AI tools daily to accelerate development: writing and reviewing recipes, generating test scaffolding, drafting documentation, and debugging build failures
Write clear documentation for build processes, image releases, and provisioning workflows

Preferred Qualifications
Hands-on experience with the Yocto Project, Buildroot, or another embedded Linux build system
Exposure to Rocky Linux / RHEL-family distributions
Familiarity with secure boot, TPM, disk encryption, or FIPS 140-3 concepts
Experience with network security tooling (Suricata, Zeek, packet capture)
Exposure to compliance frameworks (CMMC, NIST 800-171)
Basic C or Rust reading ability for kernel/driver troubleshooting
Homelab, open-source contributions, or relevant personal projects
Clearance Requirements

Some positions will

require access to U.S. National Security information.

Positions

• that require this access will be
• required
• to receive and
• maintain
• a U.S. government personnel security clearance (PCL).

In order to

• qualify for this position, the candidate must be a US Citizen and either currently
• possess
• this National Security eligibility or be able to complete the investigation application process with a favorable determination and
• maintain
• that eligibility throughout their employment. To learn more about the security clearance process please access this
• link .

EEOC & Know Your Rights

Lyntris

companies are Equal Opportunity Employers. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, disability, status as a protected veteran or any other status protected by applicable federal, state, and local law. We ensure that all employment decisions, including hiring, promotion, compensation, and other terms and conditions of employment, are based on merit, qualifications, and business needs. For more information about your rights, please review the "Know Your Rights" poster from the Equal Employment Opportunity Commission (EEOC). Know your Rights:

English

Spanish

Pay Scales & Benefits

The listed pay scale reflects the broad, minimum to maximum, pay scale for this position for the location for which it has been posted and is not a guarantee of compensation or salary. Other compensation considerations may include, but are not limited to, job responsibilities, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, or other applicable factors.

Benefits include…

Paid Time Off

Paid Company Holidays

Medical, Dental & Vision Insurance

Optional HSA and FSA

Base and Voluntary Life Insurance

Short Term & Long-Term Disability Insurance

401k Matching

Employee Assistance Program

Lyntris

is a defense technology company that connects sensing to action across the connected battlespace.

Lyntris

brings together the talents of

Accelint

• and Vitesse teams under one mission, with each contributing deep
• expertise
• within their domain.
• Combining differentiated hardware,
• software
• and mission
• expertise, Lyntris helps customers sense threats, make sense of complex conditions and act with greater speed,
• precision
• and confidence in contested environments.
• Lyntris supports U.S. and allied defense organizations across every branch — including Navy, Army, Air Force, Space

Force

• and allied partners — spanning strategic,
• operational
• and tactical missions and every domain: Space, Air, Land, Sea and Cyber. With more than 200 active defense programs,

Lyntris

works at every level of the mission, from national command authority to the tactical edge.

Solutions are designed by operators who understand the mission, engineered for the conditions that degrade or defeat standard systems, and built on an open, modular architecture that integrates into existing programs without requiring them to start over.

Lyntris

moves faster than the traditional defense cycle — with integrated design, build and test capabilities in-house — and delivers systems that sustain and endure long after initial fielding.