Senior Linux System Administrator

Company: Raytheon
Location: Acton
Posted on: January 28, 2026

Job Description:

Date Posted: 2025-11-21 Country: United States of America Location: MA801: Marlborough, MA 1001 Boston Post Road Building 2, Marlborough, MA, 01752 USA 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: DoD Clearance: Secret At Raytheon, the foundation of everything we do is rooted in our values and a higher calling – to help our nation and allies defend freedoms and deter aggression. We bring 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. Our team solves tough, meaningful problems that create a safer, more secure world. This is your opportunity to join the Receiver Exciter and Processing Architecture (REPA) Department as a specialized Linux System Administrator. The team’s primary goal is to design, architect, and implement signal processing algorithms on a variety of high-performance processing platforms – including CPUs, FPGAs and GPUs, on COTS and semi-custom hardware platforms, for next generation radar systems deployed on land and sea. This position is intended to split time between Linux system administration of these platforms and supporting testing of specialized hardware. What You Will Do: Work in team of HW and SW engineers to support hardware build, integration, and test of custom processing hardware. Provide IT systems administration in a RedHat Enterprise Linux environment for real-time systems. Ethernet and InfiniBand network configuration, maintenance and troubleshooting. Write and execute python and bash scripts to support verification testing and to automate procedures. Develop integration and test plans, procedures, and conduct execution of functional, performance, and environmental testing at the subsystem level. For example, log hardware metrics and present results on power, cpu and memory usage, cpu temperature, and network throughput. Update FPGA firmware using Quartus. Assist in architecting hardware systems to meet performance needs. This 1st shift role will be 100% on-site and based in Marlborough, MA. Qualifications You Must Have: Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum 5 years’ of prior work experience, or an Advanced Degree in a related field and minimum 3 years’ of prior work experience. Experience administrating Linux operating systems. Experience with datacenter / HPC computer hardware. Experience with scripting (e.g. shell, bash, python). Qualifications We Prefer: CompTIA Linux certification. Experience with automation tools / frameworks (e.g. Terraform, Ansible, Chef, GitLab, GitLab Runner). Experience with observability tools such as Grafana, Telegraf, and Prometheus. Experience with developer tools (e.g. Git, Jenkins, Artifactory, Jenkins, Jira). Experience with C++. 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. This position offers relocation based on candidate 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 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 82,000 USD - 164,000 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. Privacy Policy and Terms: Click on this link to read the Policy and Terms

Keywords: Raytheon, Newport Beach , Senior Linux System Administrator, IT / Software / Systems , Acton, California