Systems Administrator (Onsite)

Prattwhitney; Arlington (TX); On-site; USD 96,000 - 182,000; Full time

Job summary

RTX BBN Technologies is seeking a Systems Administrator to manage on-site lab IT infrastructure and security. You will implement system hardening to NIST/STIG standards, manage Windows and Linux environments, and collaborate with Cybersecurity for RMF compliance.

Responsibilities include maintaining Active Directory, VM environments, and security tooling (SCAP, Nessus, Splunk). A TS clearance and DoD-aligned certs are required for this role.

Qualifications

• Experience configuring and hardening systems to NIST 800-53 and STIG standards.
• DoD 8570 IAT Level II equivalent certification (e.g., CompTIA Security+ CE).
• Experience with classified U.S. Government networks.

Responsibilities

• Lead on-site lab and IT infrastructure administration for Windows and Linux environments.
• Collaborate with Cybersecurity & RMF teams to ensure compliance and documentation.
• Configure, monitor and maintain network, server, and security tooling; support vulnerability management.

Skills

Security clearance

Lab/IT security hardening

Windows/Linux administration

Networking fundamentals

Scripting (Python/PowerShell)

Education

University degree in related field

Tools

STIG Viewer

SCAP Compliance Checker

EvaluateSTIG

Splunk

Nessus

Active Directory

VMware

Job description

Date Posted: 2026-09-15 Country: United States of America Location: US-VA-ARLINGTON-111 ~ 1300 17Th St N ~ BBN ARLINGTON 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: Top Secret Security Clearance Status: Active and existing security clearance required on day 1

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. Join us and help shape the future of aerospace and defense.

RTX BBN Technologies, a subsidiary of RTX, is the research company behind many revolutionary advances that we take for granted today. BBN is where email was invented, and the first routers were implemented. Today, BBN's scientists and engineers are working to advance the state-of-the-art on topics ranging from machine language translation to quantum cryptography. BBN offers the opportunity to perform exciting and revolutionary research that solves important problems in an exciting, collaborative environment.

The Business Infrastructure group at RTX BBN Technologies' Rosslyn, VA office is seeking a Systems Administrator. Our team handles all aspects of IT including, but not limited to: core network infrastructure, phone systems, lab setups, server installs and configuration, scripting, automation, and VM management.

You will work mainly in our lab environments as a systems administrator as well as collaborating with colleagues in Cambridge and our other remote offices. At BBN, we offer an exciting and collaborative workplace. If you enjoy a collegial environment that emphasizes innovation, teamwork, and technical excellence, we'd like to hear from you! We value creativity and initiative. You'll work independently, installing and configuring server hardware and networking equipment. You will also work directly with our engineering staff, external vendors, and collaborators to solve complex and interesting problems. The ideal candidate would have experience with system configuration/hardening (specifically to NIST 800-53 and STIG standards), applicable certifications, and some experience with classified US Government networks. You should be able to learn and adapt to new technologies quickly and effectively. Flexibility and attention to detail is essential to this team's success.

What You Will Do

• Work primarily on-site at our facility in Rosslyn, VA.
• Work with our Cyber Security team to ensure that information systems conform to customer specification (NIST and RMF requirements).
• Work with team members to propose, design, purchase, and implement technical solutions to customer requirements.
• Perform regular information systems maintenance with regards to software updates, hardware refreshes, licensing, and changing requirements.
• Diagnose and troubleshoot issues in lab environments including but not limited to Active Directory, antivirus software, vulnerability assessments, or network device configuration.
• Generate, organize and maintain IT documentation as it relates to lab environments.

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 or in absence of a degree, 9 years of relevant experience.
• Ability to access U.S. only data systems.
• Active and transferable Top Secret U.S. government issued security clearance is required prior to start date.
• CompTIA Security+ CE certification or other equivalent which meets DoD 8570 IAT Level II requirements.
• Experience with several of the following tools: STIG Viewer, SCAP Compliance Checker, EvaluateSTIG, Splunk, Nessus.
• Experience with NIST 800-53 and NIST 800-171 standards and the Risk Management Framework (RMF).
• Experience with networking essentials including common ports & protocols, DHCP, DNS, switching/routing, firewalls, etc....
• Experience with Windows operating systems (e.g. Windows 10/11, Windows Server 2022 and newer).
• Experience with Linux operating systems (e.g. RedHat Enterprise, Ubuntu, etc…).

Qualifications That We Prefer

• Experience with additional operating systems (e.g., macOS, Unix, etc…).
• Experience setting up and managing Microsoft Active Directory environments.
• Experience with Virtualization (e.g. VMWare vSphere, Hyper‑V, etc…).
• Cisco certification or experience with configuring and maintaining Cisco switching/routing/firewall products.
• Relevant experience with classified U.S. Government networks.
• Familiarity with the use of Atlassian software products (e.g., Jira, Confluence, Bit Bucket).
• Experience with scripting languages (e.g., Linux/Unix shell scripting, Python, Windows PowerShell, etc…).
• Ability to perform system builds and upgrades, product installation and maintenance.
• Ability to troubleshoot and solve complex technical problems.

What We Offer

Whether you’re just starting out on your career journey or are an experienced professional, we offer a robust total rewards package with compensation; healthcare, wellness, retirement, and work/life benefits; career development and recognition programs.

Some of the benefits we offer include parental (including paternal) leave, flexible work schedules, achievement awards, educational assistance and child/adult backup care.

• Relocation Assistance available.
• This position is onsite at our Rosslyn, VA Location.

To help you achieve your goals, BBN will provide A strong leadership team well-versed in government and Cybersecurity. A collaborative and organized environment to help foster better understanding of Cybersecurity requirements, guidance, and approvals process. Technically competent pool of Cyber/IT team who are willing to mentor, listen, and help you refine your Cybersecurity vision and goals. Access to opportunities that help transition and apply security analysis during the lifecycle of systems through RTX.

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 95,500 USD - 181,700 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:

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.