Sr. Multi-Disciplined Systems Architect (REMOTE)

RTX; United States; Remote; USD 132,000 - 252,000; Full time

Benefits offered by this job

Medical benefits

Vacation time

401(k) plan with match

Tuition reimbursement

Employee assistance

Job summary

RTX, in partnership with Applied Signal Technology (AST), seeks a Senior Multi-Disciplined Systems Architect to strengthen national security through robust cybersecurity strategy and system hardening. The role emphasizes Linux administration, automation, and cross-team collaboration in a remote environment reporting to the San Jose area.

Ideal candidates will have a STEM degree, 10+ years of relevant experience, and active Secret clearance.

Qualifications

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 10 years of prior relevant experience.
• Ability to demonstrate administration of RHEL 7/8/9, including systemd, firewalld, and SELinux.
• Ability to demonstrate administration of NetApp enterprise storage.
• Ability to obtain and maintain U.S. government issued Secret security clearance is required prior to start date.
• U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.

Responsibilities

• Lead, develop, document, and implement a robust Cybersecurity mitigation strategy by ensuring Linux IT resources are patched and hardened in accordance with NIST-800-171 guidelines.
• Collaborate with Cyber teams to maintain and monitor system availability, performance, and logs using enterprise tools.
• Leverage industry standards to build out automation workflows
• Champion processes regarding hardware and software issues across physical and virtualized environments (VMWare)
• Work closely with operations, supply chain and legal teams to support mission objectives.
• Support audit readiness activities and respond to security vulnerability findings.
• Provide mentorship and guidance to junior system administrators.
• Leverage ticketing system to resolve incidents submitted by end users
• Travel up to 15%

Skills

RHEL Administration

System hardening

Bash scripting

Scripting (Python)

VMware

NetApp storage

Security clearance

Active Directory/LDAP

Education

STEM degree

Tools

Ansible

Splunk

Zabbix

RHCSA / LPIC

NetApp OnTap

AD/LDAP

Job description

Date Posted:

2026-10-16

Country:

United States of America

Location:

US-CA-REMOTE

Position Role Type:

Remote

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: Secret

Security Clearance Status:

Active and existing security clearance required after day 1

Raytheon company managed by Collins Aerospace

At RTX, the world’s largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world.

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.

At Applied Signal Technology (AST), 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. Our team solves tough, meaningful problems that create a safer, more secure world.

Applied Signal Technology (AST) is seeking a Senior Multi-Disciplined Systems Architect who strives for excellence and has a passion to be part of a team that strengthens our nation and improves the security of our world. AST provides trusted strategic and tactical SIGINT solutions that secure the interests of the U.S. and its partners.AST’s work in areas such as high-capacity broadband communications, signal processing and analysis, tactical SIGINT, and wireless communications continually challenges our extraordinary engineers to resolve problems and make the world a safer place.AST’s work environment is passionate, highly collaborative and provides employees the freedom to strengthen and expand their skills, explore new and creative ideas, and work closely with our nation’s finest service members all while embracing integrity, innovation, and work-life balance.

This is a REMOTE role that will report to our San Jose, CA office.

What You Will Do:

• Lead, develop, document, and implement a robust Cybersecurity mitigation strategy by ensuring Linux IT resources are patched and hardened in accordance with NIST-800-171 guidelines
• Collaborate with Cyber teams to maintain and monitor system availability, performance, and logs using enterprise tools.
• Leverage industry standards to build out automation workflows
• Champion processes regarding hardware and software issues across physical and virtualized environments (VMWare)
• Work closely with operations, supply chain and legal teams to support mission objectives.
• Support audit readiness activities and respond to security vulnerability findings.
• Provide mentorship and guidance to junior system administrators.
• Leverage ticketing system to resolve incidents submitted by end users
• Travel up to 15%

Qualifications You Must Have:

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 10 years of prior relevant experience
• Ability to demonstrate administration of RHEL 7/8/9, including systemd, firewalld, and SELinux.
• Ability to demonstrate administration of Netapp enterprise storage.
• Ability to obtain and maintain U.S. government issued Secret security clearance is required prior to start date.
• U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.

Qualifications We Prefer:

• Experience with enterprise logging, monitoring, and alerting systems.
• Experience with automation tools such as Ansible.
• Experience with CIS/STIG benchmarks and DoD security standards.
• Linux OS Certificate (RHCSA / LPIC)
• Experience with Splunk/Zabbix
• Experience with NetApp / OnTap tools
• Experience with Enterprise Active Directory (AD) & LDAP
• Experience dealing with Managed Anti-Virus (AV) solutions (ClamAV & SEM).
• Scripting Experience (Bash, Python, Ansible) and Kickstart.
• Active and existing Secret security clearance (within the last 24 months)

What We Offer

• Medical, dental, and vision insurance
• Three weeks of vacation for newly hired employees
• Generous 401(k) plan that includes employer matching funds and separate employerretirement 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 lifeand accident insurance,critical illnessinsurance, 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!

Remote: Employees who are working in Remote roles will work primarily offsite (from home). If you live within a reasonable commute of an RTX site with other colleagues you interact with, your manager will discuss whether there is a degree of onsite presence associated with this role.

As part of our commitment to maintaining a secure hiring process, candidates may be asked to attendselect 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 132,400 USD - 251,600 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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Do you want to be a part of something bigger? A team whose impact stretches across theworld, and even beyond? At Collins Aerospace, our Mission Systems team helps civilian,military and government customers complete their most complex missions — whatever andwherever they may be. Our customers depend on us for intelligent and securecommunications, missionized systems for specialized aircraft and spacecraft andcollaborative space solutions. By joining our team, you’ll have your own critical part to play inensuring our customer succeeds today while anticipating their needs for tomorrow. Are youup for the challenge? Join our mission today.