Senior Linux System Engineer Jobs in Dallas, TX (NOW HIRING)

Date Posted:
2026-07-29
Country:
United States of America
Location:
US-TX-RICHARDSON-461 ~ 3200 E Renner Rd ~ RENNER BLDG 461
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 Type:
DoD Clearance: Secret
Security Clearance Status:
Active and existing security clearance required on day 1
Collins Aerospace is a leader in technologically advanced, intelligent solutions that help redefine the aerospace and defense industry. With a comprehensive portfolio and deep technical expertise, we help customers meet the demands of the global market. Join us and help shape the future of aerospace and defense. We are looking for a System Admin who is Linux focused.
** This is an onsite position in Richardson, TX**
What YOU will do:

• You will work with one or more of the following Linux-focused technologies:
  - Red Hat Enterprise Linux (RHEL)
  - Ubuntu Server
  - Configuration management and automation (Ansible preferred)
  - Virtualization platforms
  - Server hardware and system services
  - Networking and storage technologies
  - Backup and restoration tools
• You will regularly work with other members of the organization as part of a cross-functional team.
• You will build strong working relationships with customers and peers.
• You will assist in driving escalations to resolution across Tier 1, Tier 2, and Tier 3 support levels.
• You will participate in improvement of internal processes (LEAN/ACE/CORE).
• You will use your technical knowledge and Linux experience to facilitate resolution of service requests and restoration tickets.
• You will support the implementation, deployment, and maintenance of Linux solutions for assigned projects.
• You will contribute to automation, hardening, and operational stability efforts across the Secure Labs environment.

What You Will Learn:

• You will foster relationships with your DT peers across the domestic U.S.
• You will learn how to communicate effectively to Engineering leadership.
• You will learn how to provide ROI based on project performance.
• You will learn how to apply your Linux knowledge and personal skills to shape projects with evolving or loosely defined 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.
• DoD Secret Clearance is needed day one.
• Linux Systems Administration (RHEL and Ubuntu required)
• Server administration and virtualization technologies (VMware, etc.)
• Networking fundamentals
• Compliance frameworks (NIST 800-53)
• Ability to obtain IAT Level II certification (e.g., Sec+). Active certification preferred.
• Ability to obtain a Collateral Secret Govt. Security Clearance, up to Top Secret. Active clearance preferred.

Qualifications We Prefer:

• Linux administration certifications (RHCSA, RHCE, Ubuntu, etc.).
• Automation / configuration management certifications (Ansible, Puppet, etc.).
• Security certifications (Sec+, CISSP, etc.).

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.
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