Junior Operating Systems Engineer; Embedded Linux​/Yocto

Junior Operating Systems Engineer (Embedded Linux / Yocto) About this position

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

Lyntrisbrings together the talents of Accelintand Vitesse teams under one mission, with each contributing deepexpertisewithin 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 Forceand allied partners — spanning strategic,operational and 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 time

San Diego, CA – On-Site

* This position requires anactive 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, Bit Bake, 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, Bit Bake, 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…