Principal Software Infrastructure Engineer

Job Description

Date Posted : 2025-09-04

Country :

United States of America

Location :

MA133 : Tewksbury, Ma Bldg 3 Concord 50 Apple Hill Drive Concord - Building 3, Tewksbury, MA, 01876 USA

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 :

DoD Clearance : Secret

At Raytheon, our foundation is rooted in our values and a higher calling – to help our nation and allies defend freedoms and deter aggression. With over 100 years of experience and renowned engineering expertise, we meet today’s mission needs and stay ahead of tomorrow’s threats. Our team solves tough, meaningful problems to create a safer, more secure world.

We’re seeking a Principal Software Engineer to lead the design, development, and integration of embedded software and infrastructure for distributed, real-time systems. This is a hands-on, high-impact role supporting critical defense programs.

What You Will Do

Provide technical leadership in configuring, managing, and developing infrastructure and COTS components in embedded systems

Diagnose and resolve complex system-level issues using industry-standard tools and best practices

Develop, test, and integrate embedded software components (OS, network stacks, bootloaders, etc.)

Contribute to the technical roadmap and participate in design reviews and strategic planning

Automate workflows and pipelines using DevSecOps tools and Agile methodologies

Collaborate across engineering, program management, and cross-functional teams

Produce clear, concise documentation for software processes, integration, and design

Qualifications You Must Have

Typically requires a Bachelor’s in Science, Technology, Engineering, or Mathematics (STEM preferred) and a minimum of 8 years of experience.

Experience with real-time OSes such as Linux, VxWorks, LynxOS

Scripting experience in Python or Bash

Experience with network protocol configuration

Experience with infrastructure code (e.g., kernel modules, thread auditing)

Experience with debugging tools, performance profiling, and system integration

Ability to obtain and maintain an interim secret U.S. security clearance prior to the start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance

Qualifications We Prefer

Active Secret security clearance.

C / C++ development experience.

Switch management experience

Familiarity with Patriot Systems and Raytheon engineering processes

Experience with COTS integration, license management, and vendor interaction

Experience with data structures, OS architecture, and embedded system design

Experience with CI / CD pipelines (e.g., Jenkins, GitLab, Bamboo, Travis)

Background in Agile / SCRUM development and DevOps practices

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.

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.

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 :

We Are RTX

The salary range for this role is 101,000 USD - 203,000 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, and holidays. Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement.

Hired applicants may be eligible for annual short-term and / or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and / or the company’s performance.

This role is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply.

RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window.

RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act.

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