Senior Platform Software Engineer (Onsite)

RTX (Raytheon); El Segundo (CA); On-site; USD 140,000 - 190,000; Full time

Benefits offered by this job

Medical,dental,vision insurance

Vacation 3 weeks

401(k) plan with employer matching

Tuition reimbursement

Student loan repayment

Life and disability insurance

Job summary

RTX, a leading aerospace and defense company, is seeking a Senior Software Engineer to advance embedded Linux systems and BSPs for mission‑critical platforms in an onsite El Segundo setting. You will work with cross‑functional teams across FPGA, hardware, and software domains to deliver secure, high‑reliability software for advanced communications and data processing systems.

The role requires strong C/C++, Bash, Python, and Linux expertise, plus board bring‑up and debugging skills.

Qualifications

• Typically requires a STEM degree and 5+ years of relevant experience or an advanced degree with 3+ years of experience.
• Active and transferable U.S. government issued security clearance is required prior to start date.
• U.S. citizenship is required for security clearance eligibility.
• Proficiency with embedded C/C++ and scripting (Bash, Python).
• Experience with embedded Linux device drivers and board bring‑up.

Responsibilities

• Design, develop, and enhance embedded Linux OS ecosystem (kernel, rootfs, bootloader, BSP).
• Contribute to design, coding, testing, and support for embedded Linux software systems.
• Perform root cause analysis and resolve hardware‑software issues.
• Prepare software builds for simulation, reference platforms, and target hardware.
• Collaborate with Collins Aerospace processes and tools to improve product quality and customer satisfaction.
• Contribute to engineering estimates for features.

Skills

Embedded C/C++

Bash

Python

Embedded Linux

Board bring-up

Debugging with Wireshark

DevSecOps

Education

STEM degree

Advanced degree

Tools

Git

SVN

Buildroot

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.

As a Senior Software Engineer in this organization, you will be involved in the development of state-of-the‑art communications, information assurance, and general‑purpose processing systems. The Advanced Technology and Capabilities directorate supports some of the most cutting‑edge products across the enterprise. We develop innovative solutions that keep our military members safe, connected, and informed. Our team has some of the most knowledgeable experts in the industry and work with all the most recent technologies in embedded software development. Within Collins Aerospace we work alongside FPGA, hardware, and systems teams in order to seamlessly embed our advanced technology into our Mission Systems product portfolio. Examples of these products range from high‑frequency radios to secure, sophisticated software‑defined radios that can enable pilots and soldiers to transfer data, voice and imagery over the air.

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 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 product features.

Qualifications You Must Have

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 5 years prior relevant experience or an Advanced Degree in a related field and minimum 3 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++
• Experience 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 board support packages (BSP) for embedded systems
• Development experience Agile methodologies and DevSecOps

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
• Teladoc Medical Experts, second opinion program

This position is eligible f