241 - 260 of 734 Jobs

Network Architect

World Wide Technology

No location provided

Full-time

Bachelor's degree and minimum 8 years of experience in Networking and ATO Accreditation Must have Active DoD Secret clearance or higher 8140 and Security + Certification Familiarity with U.S. DoD & U.S. Air Force procedures and the Air Force Information Network (AFIN). Hands-on experience in network engineering and firewall management Experience with DoD cloud environments (e.g., Impact Level 4/5 systems). Familiarity with additional compliance tools (e.g., Nessus, ACAS). Minimum of 8 or more y

Systems Eng - IT, Staff /Storage & VTC Solutions / Secret / Onsite: CO

Lockheed Martin Corporation

Littleton, Colorado, USA

Full-time

Job Description This position is within Lockheed Martin Enterprise Business and Digital Transformation (EBDT) Classified IT Transformation organization. It is chartered with transforming IT is delivery to Classified programs and environments. If you're looking for your next challenge in a fast paced, innovation-oriented group, look no further! Lockheed Martin recognizes the tremendous opportunity for significant advancement in the way Classified IT services are delivered to our Business Area p

LINUX Sr Principal Systems Engineer - Active Top Secret Required

General Dynamics

Washington, District of Columbia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret Clearance Level Must Be Able to Obtain: Top Secret/SCI Public Trust/Other Required: None Job Family: Systems Engineering Job Qualifications: Skills: Computer Engineering, Linux, Red Hat Enterprise Linux (RHEL) Certifications: None Experience: 10 + years of related experience ship Required: Yes Job Description: Job Description Senior Principal Systems Engineer - Linux Design, deploy, integrate and maintain Li

Assistant Information Systems Security Officer (ISSO)

General Dynamics Information Technology

Fairbanks, Alaska, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Secret Clearance Level Must Be Able to Obtain: Top Secret Public Trust/Other Required: None Job Family: Systems Analysis Job Qualifications: Skills: Documentations, Operating Systems (OS), System Security Certifications: None Experience: 5 + years of related experience ship Required: Yes Job Description: General Dynamics Information Technology (GDIT) is looking for an Assistant Information Systems Security Officer (ISSO

System Administrator

General Dynamics Information Technology

Eielson Air Force Base, Alaska, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Secret Clearance Level Must Be Able to Obtain: Secret Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Computer Backups, IT Policies, System Security Certifications: None Experience: 1 + years of related experience ship Required: Yes Job Description: Systems Administrator Transform technology into opportunity as a Systems Administrator with GDIT. A career in enterprise I

Windows System Administrator (Onsite) (DoD Secret Clearance)

RTX Corporation

Cedar Rapids, Iowa, USA

Full-time

Date Posted: 2025-07-07 Country: United States of America Location: RIA32: Cedar Rapids, IA 400 Collins Road NE , Cedar Rapids, IA, 52498-0505 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.Security Clearance: DoD Clearance: Secret We have an immediate career growth opportunity with our Information Workplace Services team for a talented Windows Syste

Senior Information System Security Engineer

Booz Allen Hamilton

Lexington, Massachusetts, USA

Full-time

Job Number: R0222757 Information System Security Engineer, Senior Key Role: Maintain responsibility for all Information Systems Security Engineer ( ISSE ) duties in support of Department of Defense ( DoD ) Risk Management Framework ( RMF ) and Intelligence Community Directive ( ICD ) 503. Leverage knowledge of National Institute of Standards and Technology ( NIST ) Spe cia l Publication 800-53 security controls and the Committee on National Security Systems Instruction 1253. Apply systems secur

Sr. System Administrator

Leidos

Fort Belvoir, Virginia, USA

Full-time

The Sr. System Administrator will be responsible for the functional and technical design of solutions within the DTRA ITD I3TS portfolio, including leading the technical design of solution components and developing system and technical requirements in support of customer-facing capabilities in a Data-Driven, AI ready, hybrid cloud-based environment in Fort Belvoir, VA. As a I3TS team member, you will work as part of a fast paced, Agile team to create solution designs as well as develop and manag

Cybersecurity Systems Engineer

Lockheed Martin Corporation

Colorado Springs, Colorado, USA

Full-time

Job Description As we enter a new era of Strategic Weapon Systems, Lockheed Martin is a pioneer, partner, innovator and builder. Our amazing men and women are on a mission to make a difference in the world and every single day we use our unique skills, talents and experiences to design and build solutions to some of the world's hardest engineering problems. Do you want to be part of a culture that inspires employees to envision the impossible, perform with excellence and build incredible produc

Classified Network Administrator

RTX Corporation

Cambridge, Massachusetts, USA

Full-time

Date Posted: 2025-08-01 Country: United States of America Location: MA105: BBN Headquarters 10 Moulton Street , Cambridge, MA, 02138 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.Security Clearance: DoD Clearance: Secret This position requires active and transferable Secret U.S. government security clearance RTX Corporation is an Aerospace and Defe

Senior Information Assurance Engineer

General Dynamics

Pittsburgh, Pennsylvania, USA

Full-time

Basic Qualifications Requires a Bachelor's degree in Engineering, or a related Science or Mathematics field. Also requires 8+ years of job-related experience, or a Master's degree plus 6 years of job-related experience. CLEARANCE REQUIREMENTS: Department of Defense Top Secret security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the natur

Cybersecurity Engineer (DHS)

LMI Government Consulting (Logistics Management In

Washington, District of Columbia, USA

Contract

Overview Join our cutting-edge generative AI (GenAI) platform, LIGER , created by its technology studio, LMI Forge. LIGER harnesses the power of advanced technology, data analytics, and the latest in machine learning and natural language processing to provide secure, private, and trustworthy GenAI solutions for government. LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in technology and prototypes ahead of need

Cyber Security Systems Engineer

Lockheed Martin Corporation

Kirtland Air Force Base, New Mexico, USA

Full-time

Job Description What We're Doing: At Lockheed Martin Rotary and Mission Systems (RMS), we are driven by innovation and integrity. We apply the highest standards of business ethics and visionary thinking to push the boundaries of what's possible. As a Lockheed Martin employee, you will have the opportunity to contribute to groundbreaking projects that shape the future of Aerospace and Defense. We value your skills, training, and education, and we are committed to providing a supportive environm

Unified Communications Engineer

Leidos

Doral, Florida, USA

Full-time

Leidos is seeking a Unified Communications Engineer to join our SCITES 2 team in Doral, FL. The Leidos Digital Modernization Sector at Leidos currently is looking for a Unified Communications Engineer to work onsite in Doral, Florida and have the opportunity to work in a high-profile IT and Cyber Services program supporting the United States Southern Command (USSOUTHCOM) Cyber Information Technology Enterprise Services (SCITES) 2 contract. Our customer maintains a highly demanding mission and r

Information Systems Security Manager

Textron, Inc.

Slidell, Louisiana, USA

Full-time

About This Role Provide information systems security support from a managerial and technical standpoint for DoD and Non-DoD classified systems and networks. Standing up and maintaining accreditations for classified systems and networks. Classified Systems & Networks range in complexity and size to include multi-platform computing (Linux, Windows, Solaris, VMWare), virtual environments, and mobile systems. Extensive experience with eMASS, JSIG DCSA DAAPM, DISA STIGs. Assemble and maintain securit

Network Designer III (Government)

AT and T

Sterling, Virginia, USA

Full-time

Job Description: This position requires office presence of a minimum of 5 days per week and is only located at customer's site. No relocation is offered. AT&T Global Public Sector is a trusted provider of secure, IP enabled, cloud-based, network solutions and professional services to the Federal Government. We are dedicated to recruiting, developing and empowering a diverse, high-performing workforce that is passionate about what they do, committed to our shared values and dedicated to our cus

Information Systems Security Manager / Officer (ISSM / ISSO)

General Dynamics Information Technology

Independence, Kansas, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret Clearance Level Must Be Able to Obtain: Top Secret Public Trust/Other Required: None Job Family: Information Security Job Qualifications: Skills: Assessment and Authorization (A&A), Information System Security, Risk Management, Vulnerability Management Certifications: None Experience: 5 + years of related experience ship Required: Yes Job Description: Information Systems Security Manager / Officer (ISSM / IS

MBSE Systems Engineer

Apex Systems

Hampton, Virginia, USA

Full-time

Job#: 2082772 Job Description: Job Description Transform technology into opportunity as a MBSE Systems Engineer with GDIT. A career in enterprise IT means connecting and enhancing the systems that matter most. At GDIT you'll be at the forefront of innovation and play a meaningful part in improving how agencies operate. At GDIT, people are our differentiator. As a MBSE Systems Engineer you will help ensure today is safe and tomorrow is smarter. Our work depends on MBSE Systems Engineer joining

IT Vulnerability Systems Engineer

Penn State

State College, Pennsylvania, USA

Full-time

APPLICATION INSTRUCTIONS: CURRENT PENN STATE EMPLOYEE (faculty, staff, technical service, or student), please login to Workday to complete the internal application process. Please do not apply here, apply internally through Workday. CURRENT PENN STATE STUDENT (not employed previously at the university) and seeking employment with Penn State, please login to Workday to complete the student application process. Please do not apply here, apply internally through Workday. If you are NOT a current em

Information Systems Security Engineer II (Onsite)

RTX Corporation

Sterling, Virginia, USA

Full-time

Date Posted: 2025-07-23 Country: United States of America Location: HVA34: Sterling, VA 22640 Davis Dr , Sterling, VA, 20164-7104 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.Security Clearance: DoD Clearance: Secret Information Systems Security Engineer II (Onsite) Do you like video games? Have you ever wondered what it would be like to create yo