Systems Administrator (Linux)

Date Posted : 2025-12-01

Country :

United States of America

Location :

TX190 : 2501 West University, McKinney 2501 West University , McKinney, TX, 75070 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

Do you want to be a part of a team whose impact stretches across the world, and even beyond?

Collins Aerospace, an RTX company, is a leader in advanced technologically and intelligent solutions for the global aerospace and defense industry. We are currently seeking a Linux Systems Administrator that will be working onsite in a highly collaborative, multi-platform and multi–disciplined environment. The Systems Administrator is required to have an active secret security clearance as they will be responsible for deploying and maintaining classified IT infrastructures. Our Digital Technology (DT) group combines foundational IT with new digital technologies - driving business efficiencies and a better customer experience by connecting technologies, people, information, and processes. If you’re an agile thinker who enjoys utilizing modern technology to make big improvements, then you’re a perfect fit for out DT team.

Each day in the life of a Systems Administrator can bring something new – building a new IT infrastructure for a group of engineers, restoring files due to an outage, updating virus definitions and security patches, teaming with our brilliant engineers on how to improve their processes, and more.

What YOU will do :

You will provide System Administration in a heterogeneous Redhat 7 & 8 Enterprise Linux environment.

Understanding and knowledge of Linux Server internals to include DNS, File sharing protocols, DHCP, AD integration via LDAP, file system structures and permissions.

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).

Understanding of data backup uses and technologies.

Install and configure software applications requested by end users.

Work with Cybersecurity professionals to maintain security requirements.

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.

U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.

An active DoD Secret clearance is required day one.

Experience with security infrastructure products and capabilities.

Must have experience with Redhat servers and workstations.

Experience using VMware vCenter, vSphere, VDI (Horizon), and ESX and / or other virtual computing methods.

Must be able to develop solutions and documentation to a variety of technical problems.

Experience with Linux architecture, deployment, administration, performance monitoring / tuning, security hardening, and troubleshooting.

Experience with infrastructure backup, restore, disaster recovery and business continuity products.

Experience with NAS and / or SAN storage capabilities

Experience with application installation and multi-server environment / deployment.

Must be able to obtain Department of Defense Directive (DoDD) 8140 / 8570 Certification requirements within 6 months of start date.

Qualifications We Prefer :

An active DoD Top Secret clearance

Scanning using tools such as Nessus and SCAP

Familiarity with High Performance Computing ( HPC ) Environments

Experience with Enterprise Active Directory (AD) & LDAP

Familiarity with Databases including MariaDB, Oracle, and SQL

Experience dealing with Managed Anti-Virus (AV) solutions.

Scripting Experience (Bash, Python, Ansible) and Kickstart

Experience hardening systems using tools like SCAP and following STIGs.

Experience supporting engineers in software, simulations, and hardware development.

Critical thinking – ability to solve technical problems independently and with collaborative teams.

What We Offer :

Some of our competitive benefits package includes :

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!

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!

• 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.

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.

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.