Senior Platform Software Engineer – Linux (Onsite)

Date Posted:

2026-09-16

 Country:

United States of America

 Location:

US-TX-MCKINNEY-513WC ~ 2501 W University Dr ~ WING C BLDG

 Position Role Type:

Onsite

 U.S. Citizen, U.S. Person, or Immigration Status Requirements:

The ability to obtain and maintain a U.S. government issued security clearance is required.​ U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance

 Security Clearance Type:

DoD Clearance: Secret

 Security Clearance Status:

Active and existing security clearance required after 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.

Raytheon brings the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.

The Advanced Product and Solutions organization at RTX provides the joint warfighter with actionable information from an unblinking eye across the battlespace. By joining the APS Engineering team you’ll have the opportunity to design, develop and test product capabilities for Active Electronically Scanned Array (AESA) radars, integrated sensor suites, precision targeting, multispectral EO/IR targeting systems, Pilot Situational Awareness, Special mission aircraft and Strategic and tactical ISR Systems.

But more than anything, we are innovators, creators and strategists drawing inspiration from each other every day. We collaborate, iterate, and execute with an eye toward the company mission and personal career growth.

We have an exciting opportunity for a Senior Platform Software Engineer to join our Advanced EO/IR Systems (AES) team in McKinney, TX, which is part of our Advanced Products & Solutions group.

What You Will Do

Troubleshoot, maintain, and implement solutions to optimize infrastructure operations for the AES Product Family.

Analyze and identify requirements for new or existing computer, server, peripheral, network, and telecommunications systems, considering specialized technology needs.

Design, implement, code, test, document, and support systems integration for mission‑critical advanced surveillance and targeting system solutions.

Collaborate closely with cybersecurity teams to ensure all security controls are met.

Work alongside software engineers, systems engineers, and implementation teams to ensure performance and deployment compliance.

This job is onsite in McKinney, TX; local residency or relocation required.

The ability to obtain and maintain a U.S. government issued Secret security clearance is required.​ U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.​

Qualifications You Must Have

Typically requires a degree in Science, Technology, Engineering, or Mathematics (STEM) and a minimum of 5 years of prior relevant engineering experience. An advanced degree in a related field may be substituted for an additional 2 years of experience.

CompTIA Security+ certification required

Experience with Red Hat Enterprise Linux (7.x/8.x) including:

Software and hardware installation and maintenance

System administration tasks such as patching, RPM packaging, performance tuning, networking, LDAP user management, and security

Securing and hardening RHEL systems per STIG requirements

Scripting with Bash and Python

Linux virtualization (KVM), Linux networking (creating virtual NICs, implementing forwarding rules, bridging interfaces), and general networking capabilities

Experience with developer tools including Git, Artifactory, Bitbucket, Jira, and CI/CD tools (Jenkins or GitLab).

Experience implementing Infrastructure as Code (IaC) and containerized environments using Ansible, Kickstart, Terraform, Chef, Docker, Podman, and Kubernetes to standardize and automate platform provisioning and deployments.

Qualifications We Prefer

Active and transferable U.S. government issued Secret security clearance.

Excellent hardware and software troubleshooting skills

Linux Security, Hardening, and Enterprise Management

Red Hat Certified System Administrator (RHCSA)

Red Hat Satellite administration

LUKS implementation

VM and container hardening and vulnerability analysis

Performance tuning and monitoring

RMF (Risk Management Framework) knowledge

Networking

Configure Layer 2 Cisco switches with simple VLANs, setting static routes

Configure switches as PTP boundary clocks

PTP sync issues, ptp4l

Configure grandmaster clocks (e.g., Safran/Orolia SecureSync)

Enterprise Infrastructure and Identity Services

NAS and SAN administration

DNS, sendmail, LDAP administration

AD, SAML, OAuth, OpenID, and other strong authentication technologies

Cloud and DevSecOps Ecosystems

Familiarity with AWS and Azure

Experience with Platform One DevSecOps platform toolchains and capabilities

Experience with at least one major programming language (Groovy, C++, C#, Python, Java) and troubleshooting on a Linux system

Excellent interpersonal and communication skills

Demonstrated experience learning new technologies, methodologies and processes quickly

Proven ability to work effectively with remote colleagues and customers

Experience administering Windows based systems

What We Offer

Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Safety, Trust, Respect, Accountability, Collaboration, and Innovation.

Relocation Offered Based On Eligibility

Learn More & Apply Now!

• •Please consider the following role type definition as you apply for this role:
• •Onsite : Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products.

• •Clearance Information: This position requires a security clearance. DCSA Consolidated Adjudication Services (DCSA CAS) , an agency of the Department of Defense, handles and adjudicates the security clearance process.
• •More information about Security Clearances can be found on the US Department of State government website here: https://www.state.gov/m/ds/clearances/c10978.htm

• •Location Information: This position is onsite at our campus in beautiful McKinney, TX.
• •https://careers.rtx.com/global/en/raytheon-north-texas-location
• •Welcome to Raytheon in McKinney, TX - YouTube

We Are RTX

As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote.

The salary range for this role is 86,800 USD - 165,200 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate’s work experience, location, education/training, and key skills.

Hired applicants may be eligible for benefits, including but not limited to, medical, dental, vision, life insurance, short-term disability, long-term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, Employee Scholar Program, parental leave, paid time off, a