Principal Platform Software Engineer (Onsite)

RTX (Raytheon); El Segundo (CA); On-site; USD 120,000 - 190,000; Full time

Benefits offered by this job

Medical, dental, and vision

Three weeks vacation

401(k) plan with employer matching

Tuition reimbursement

Student Loan Repayment

Life insurance

Disability coverage

Pet insurance

Birth, adoption, parental leave

Wellness rewards program

Job summary

RTX in El Segundo seeks an experienced embedded Linux engineer to design, develop and sustain our Linux OS ecosystem, including build toolchains, kernel, BSPs and drivers for diverse hardware. You will contribute to tooling, build pipelines, and debugging across hardware and software, while ensuring quality and security through Collins Aerospace processes. U.S.

government clearance is required prior to start. Active and transferable clearance is required on day one; U.S.

Qualifications

• STEM degree with 8+ years of experience, or an advanced degree with 5+ years.
• Active and transferable U.S. government issued security clearance required.
• U.S. citizenship required for clearance eligibility.
• Proficiency with embedded C/C++.
• Proficiency with Bash and Python scripting.
• Experience with embedded Linux device drivers.
• Experience with board bring-up and target hardware integration.
• Experience with debugging using logic analyzers and Wireshark.

Responsibilities

• Design, develop, and enhance Linux OS ecosystem; maintain build toolchain, kernel, BSPs and drivers.
• Contribute to design, coding, testing, delivery and ongoing support for embedded Linux software.
• Participate in root cause analysis and resolution of hardware-software issues.
• Prepare software builds for simulation, reference platforms and target hardware.
• Follow Collins Aerospace processes to improve product quality and customer satisfaction.
• Contribute to engineering estimates for new program pursuits.

Skills

Embedded C/C++

Bash

Python

Embedded Linux drivers

Board bring-up

Hardware debugging

Education

STEM degree

Advanced degree in related field

Tools

Git

SVN

Buildroot

Linux BSP development tools

SEER-SEM

Job description

Date Posted: 2026-10-15

Country: United States of America

Location: US-CA-EL SEGUNDO-E04 ~ 2006 E El Segundo Blvd ~ BLDG E04

Position Role Type: Onsite

U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance

Security Clearance Type: Secret - Current

Security Clearance Status: Active and existing security clearance required on day 1

At RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world's most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world.

Collins Aerospace is a leader in technologically advanced, intelligent solutions that help redefine the aerospace and defense industry. With a comprehensive portfolio and deep technical expertise, we help customers meet the demands of the global market. Join us and help shape the future of aerospace and defense.

What You Will Do

• Design, develop and continuously enhance our customized Linux OS ecosystem and maintain ownership over areas such as build toolchain, kernel, root filesystem, bootloader, device drivers, and board support package (BSP) for a wide variety of hardware boards.
• Contribute to the design, coding, testing, delivery and ongoing support for embedded Linux software systems.
• Participate in root cause analysis and resolution of complex hardware-software issues.
• Prepare software builds for execution in a simulation environment, reference platforms and on the target hardware.
• Understand and utilize the appropriate Collins Aerospace processes and tools during product development, resulting in increased product quality and improving customer satisfaction.
• Contribute to engineering estimates for new program pursuits.

Qualifications You Must Have

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 8 years prior relevant experience or an Advanced Degree in a related field and minimum 5 years of experience
• Active and transferable U.S. government issued security clearance is required prior to start date
• U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance
• Proficiency with embedded C/C++
• Proficiency with scripting languages (Bash and Python)
• Experience with embedded Linux device drivers
• Experience with board bring-up and target hardware integration
• Experience with debugging and root cause investigations using hardware schematics and tools such as logic analyzer and Wireshark

Qualifications We Prefer

• Experience with GIT and SVN version control systems
• Experience packaging custom Linux distribution with Buildroot.
• Experience in developing and maintaining Linux BSPs for embedded systems
• Development experience Agile methodologies and DevSecOps
• Experience with industry cost estimation tools such as SEER-SEM

What We Offer

• Medical, dental, and vision insurance
• Three weeks of vacation for newly hired employees
• Generous 401(k) plan that includes employer matching funds and separate employer retirement contribution, including a Lifetime Income Strategy option
• Tuition reimbursement program
• Student Loan Repayment Program
• Life insurance and disability coverage
• Optional coverages you can buy pet insurance, home and auto insurance, additional life and accident insurance, critical illness insurance, group legal, ID theft protection
• Birth, adoption, parental leave benefits
• Ovia Health, fertility, and family planning
• Adoption Assistance
• Autism Benefit
• Employee Assistance Plan, including up to 10 free counseling sessions
• Healthy You Incentives, wellness rewards program
• Doctor on Demand, virtual doctor visits
• Bright Horizons, child and elder care services
• Telado