Junior Operating Systems Engineer (Embedded Linux / Yocto)

Lyntris; San Diego (CA); On-site; USD 90,000 - 130,000; Full time

Benefits offered by this job

Paid Time Off

Paid Company Holidays

Medical, Dental & Vision Insurance

Optional HSA and FSA

Base and Voluntary Life Insurance

Short Term & Long-Term Disability

401k Matching

Employee Assistance Program

Job summary

Lyntris in San Diego, CA is seeking a Junior Operating Systems Engineer specializing in Embedded Linux and Yocto to join our on-site team. You will build and maintain custom Linux images, support secure boot and immutable OS architectures, and troubleshoot drivers and services on embedded hardware.

You will also leverage generative AI to accelerate development, draft build/w provisioning documentation, and contribute to OS hardening efforts while ensuring compliance with security requirements

Qualifications

• Currently holds an active U.S. national security clearance or can obtain one.
• 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 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: recipes, test scaffolding, docs, and build fixes.
• Write clear documentation for build processes, image releases, 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.
• Package, integrate, and troubleshoot services, drivers, and software on embedded hardware.
• Contribute to OS hardening and security compliance.
• Debug boot, kernel, driver, and userspace issues on real appliance hardware.
• Use generative AI tools to accelerate development and generate documentation.
• Write documentation for build processes, releases, and provisioning workflows.

Skills

Embedded Linux

Open source tooling

Documentation writing

Generative AI usage

Tools

Yocto Project

Buildroot

Secure boot / TPM concepts

Suricata / Zeek (network security tools)

Job description

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 bra