Linux Junior Jobs in California (NOW HIRING)

Lyntrisis a defense technology company that connects sensing to action across the connected battlespace.Lyntrisbrings together the talents ofAccelintand Vitesse teams under one mission, with each contributing deepexpertisewithin their domain.Combining differentiated hardware,softwareand missionexpertise, Lyntris helps customers sense threats, make sense of complex conditions and act with greater speed,precisionand confidence in contested environments.

Lyntris supports U.S. and allied defense organizations across every branch — including Navy, Army, Air Force, SpaceForceand allied partners — spanning strategic,operationaland tactical missions and every domain: Space, Air, Land, Sea and Cyber. With more than 200 active defense programs,Lyntrisworks at every level of the mission, from national command authority to the tactical edge.

Solutions are designed by operators who understands 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.Lyntrismoves 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.

Job Description

Junior Operating Systems Engineer (Embedded Linux / Yocto)Full timeSan Diego, CA – On-Site

*This position requires anactive U.S. national security clearance.To learn more about the security clearance process please access thislink.

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

• 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 willrequire access to U.S. National Security information. Positionsthat require this access will berequiredto receive andmaintaina U.S. government personnel security clearance (PCL). In order toqualify for this position, the candidate must be a US Citizen and either currentlypossessthis National Security eligibility or be able to complete the investigation application process with a favorable determination andmaintainthat eligibility throughout their employment. To learn more about the security clearance process please access thislink.

EEOC & Know Your Rights

Lyntriscompanies 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:EnglishSpanish

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

The pay range for this role is:100,000 - 120,000 USD per year(San Diego, CA (HDG))