Junior Operating Systems Engineer (Embedded Linux / Yocto)

accelintjobboardtest; San Diego (CA); On-site; USD 75,000 - 105,000; Full time

Job summary

Lyntris in San Diego, CA seeks a Junior Operating Systems Engineer (Embedded Linux / Yocto) to join on-site. The role involves building Linux images, secure boot, and contributing to embedded system integration for defense-grade hardware.

You will work with AI-assisted tooling, document build processes, and collaborate across a multidisciplinary team. Active U.S. security clearance is required.

Qualifications

• Active U.S. national security clearance or eligibility.
• Experience building Linux images using Yocto.
• Support immutable OS images with secure boot and updates.
• Troubleshoot embedded x86 hardware and drivers.
• Familiarity with AI-assisted development tools.
• Document build processes and provisioning workflows.

Responsibilities

• Build and maintain custom Linux images using the Yocto Project.
• Support an immutable, A/B‑updatable OS image architecture with secure boot and update tooling.
• Package, integrate, and troubleshoot system services, drivers, and third‑party software on embedded x86 hardware.
• Contribute to OS hardening (FIPS mode, secure boot, compliant configuration).
• Debug boot, kernel, driver, and userspace issues on real appliance hardware.
• Use generative AI tools daily to accelerate development and draft documentation.

Skills

Yocto Project

Embedded Linux

Security clearance

C/Rust basics

Tools

Yocto Project

Rocky Linux / RHEL

Job description

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.

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 the 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 hardware
• 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 the 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 hardware
• 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 the 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:

Benefits

• 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