Principal System Administrator (Linux) (Onsite)

Date Posted: 2026-07-08 Country: United States of America Location: US-MA-MARLBOROUGH-MA4 ~ 1001 Boston Post Rd ~ BLDG 4 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: Top Secret Security Clearance Status: Active and existing security clearance required after day 1 Collins Aerospace has an immediate career growth opportunity with our DT - Information Workplace Services team for a talented Principal Systems Administrator / Analyst. You will collaborate with a team of DT professionals to support fast-paced, critical programs with classified information system capabilities; develop, implement and maintain secure, cost-efficient 24x7 environments across various classified programs; define computing requirements and create end-to-end solutions to solve complex IT infrastructure problems. ** This is an Onsite role is based in Marlborough, MA and eligible for relocation assistance.** What YOU will do: Provide IT systems administration in a heterogeneous Microsoft Windows and Redhat Enterprise Linux environment supporting Windows Server internals and/or Linux fundamentals to include DNS, DHCP, AD, and server replication methods. Working as a team member in a fast-paced technological environment. Use troubleshooting techniques to resolve technical problems of a moderate to high scope and complexity to include the integration of hardware and operating systems (OS). Using data RAID and data backup technologies; installation an configuration of software applications; work with Cybersecurity professionals to maintain security requirements and provide documentation and training on advanced IT processes and procedures. Qualifications You Must Have: Typically requires a University Degree and minimum 5 years prior relevant experience or an Advanced Degree in a related field and minimum 3 years of experience Minimum 5 years of direct hands-on Linux administration experience and systems analysis / administration / networking experience with combinations of technologies such as: Active Directory, WSUS, VMware, Veeam, MySQL, Remote Desktop Gateway, Splunk, Windows and Linux administration; experience with backup, recovery, and disaster recovery. Experience supporting Linux Server architectures to include troubleshooting solutions and documentation of technical problems / actions. Must be able to obtain Department of Defense Directive (DoDD) 8140 / 8570 Certification requirements (CompTIA Security+ CE or equivalent certification) within 6 months of start date. The ability to obtain and maintain a U.S. government DoD Secret security clearance is required . U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance. *** Position may require infrequent domestic travel.*** Qualifications We Value: An active DoD TS/SCI with Polygraph clearance or prior SCI/program eligibility Department of Defense Directive (DoDD) 8140 / 8570 Certification requirements (CompTIA Security+ CE or equivalent certification and an Operating System Certification Direct working experience with NISPOM, JAFAN, JSIG, DFARS and/or DoD/RMF In-depth working experience in Windows Server Experience with data storage, NAS, and SAN technologies and solutions Experience with using Information Technology project lifecycle management processes Experience using VMWare vCenter, vSphere, and ESX and/or other virtual computing methods Experience supporting engineers in software, simulations, and hardware development Experience with Microsoft WSUS, SCCM, and/or Exchange High Performance Computing (HPC) experience in a Linux environment Scripting Experience What We Offer: Some of our competitive benefits packages include: 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. And more! Learn More & Apply Now! Do you want to be part of a new, exciting initiative to combine foundational IT with new digital technologies? Our Digital Technology team is driving business efficiencies and a better customer experience by connecting technologies, people, information and processes. From making aircraft more electric, intelligent and integrated to building new software platforms such as Internet of Things, big data, artificial intelligence, and blockchain, there’s no better place to be right now than in digital. If you’re an agile thinker who enjoys utilizing modern technology to make big improvements, then you’re a perfect fit for this team. Join Collins Aerospace to help us revolutionize the aerospace industry today! WE ARE REDEFINING AEROSPACE. * Please consider the following role type definitions 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. Regardless of your role type, collaboration and innovation are critical to our business and all employees will have access to digital tools so they can work with colleagues around the world – and access to Collins sites when their work requires in-person meetings. At Collins, the paths we pave together lead to limitless possibility. And the bonds we form – with our customers and with each other -- propel us all higher, again and again. Apply now and be part of the team that’s redefining aerospace, every day. 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, 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 RTX is an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises three industry-leading businesses – Collins Aerospace, Pratt & Whitney, and Raytheon. Its 195,000 employees enable the company to operate at the edge of known science as they imagine and deliver solutions that push the boundaries in quantum physics, electric propulsion, directed energy, hypersonics, avionics and cybersecurity. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Arlington, Virginia.