windows linux systems administrator - ts/sci with polygraph Jobs

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Principal Network Engineer

ManTech

Chantilly, Virginia, USA

Full-time

ManTech seeks a motivated, career and customer-oriented Principal Network Engineer to join our team in Chantilly, Virginia. As a Principal Network Engineer, you will be responsible for expanding network modeling of various vendor network devices, such as routers, switches, load balancers and firewalls as well as virtual network devices and cloud environments. Research various network devices' features affecting "access" and create a proposal for modeling such as features in RedSeal. As such, you

System Admin (Windows Servers VMware) (Onsite)

RTX Corporation

Marlborough, Massachusetts, USA

Full-time

Date Posted: 2025-08-06 Country: United States of America Location: MA804: Marlborough, MA Building 4 1001 Boston Post Road Building 4, Marlborough, MA, 01752 USA Position Role Type: Onsite 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.Security Clearance: DoD Clearance: Top Secret We have an immediate career growth opportunity with our Information Workplace Services team for a talented

Sr. Systems Engineer

Navigant Consulting

Washington, District of Columbia, USA

Full-time

Job Family: Systems Engineering Travel Required: None Clearance Required: Active Top Secret (TS) What You Will Do: Our Sr. Systems Engineer will provide design, engineering, and administration services for a Law Enforcement Agency. Acts independently under general direction. Provides technical assistance and advice on complex activities. Formulates / defines specifications, develops / modifies / maintains complex systems and subsystems, using vendor engineering releases and utilities for ove

Fircosoft Developer

Digitive LLC

New York, New York, USA

Contract, Third Party

Fircosoft Developer Work Location: New York - NY NYC: 2-3x per week in office Contract Must Have's: We require resources with hands-on keyboard experience deploying Fircosoft product in Linux and Oracle. o Hands-on experience installing and configuring Fircosoft Continuity V6 products and Fircosoft Screening Box o Knowledge of Fircosoft rule writing for alert tuning, Auto Hit Qualifier, Workflow Accelerator, Stripping Detector, and Pairing Manager o Experience with Linux, Java, Containers, Oracl

Senior Engineer, Application Engineering

Intercontinental Exchange Holdings, Inc.

Atlanta, Georgia, USA

Full-time

Overview Job Purpose At ICE, we never rest. We are on a mission as a team. We are problem solvers and partners, always starting with our customers to solve their challenges and create opportunities. Our start-up roots keep us nimble, flexible, and moving fast. We take ownership and make decisions. We all work for one company and work together to drive growth across the business. We engage in robust debates to find the best path, and then we move forward as one team. We take pride in what we do,

DevOps Engineer

Axos Bank

San Diego, California, USA

Full-time

Axos Bank Target Range: $70,000.00 /Yr. - $120,000.00 /Yr. Actual starting pay will vary based on factors including, but not limited to, geographic location, experience, skills, specialty, and education. Eligible for an Annual Discretionary Cash Bonus Target: 10% Eligible for an Annual Discretionary Restricted Stock Units Bonus Target: 10% These discretionary target bonuses may be awarded semi-annually based upon your achievement of performance goals and targets. About This Job This position is

Network Systems Admin / Tucson / Hybrid

Motion Recruitment Partners, LLC

Tucson, Arizona, USA

Full-time

An utility company local to Tucson, AZ is looking for an additional teammate on their Infrastructure Operations team. This group supports infrastructure applications, Layer 2 networking, and servers from an operational perspective, collaborating with subject matter experts from other teams in complex design and deployment work. The role involved both Windows and Linux servers, covering typical sys admin tasks such as patching, Active Directory and O365 administration, deployments and decommissio

IT Monitoring Specialist - TS/SCI with Polygraph

General Dynamics

Fort Belvoir, Virginia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Incident Response, IT Monitoring, IT Troubleshooting Certifications: None Experience: 1 + years of related experience ship Required: Yes Job Description: Job Summary: As an IT Monitoring Specialist at GDIT, you will play a crucial r

Modernization Cyber Systems Administrator - SA1

Lockheed Martin Corporation

Maryland, USA

Full-time

Job Description Who You Are: Here, you are going to provide life-cycle services to advance mission in support of Cybersecurity and SIGINT midpoint collection. You will modernize and sustain capabilities to include providing new features and enhancements to Front End Solutions systems. This will allow for products to work at-scale with processing of target communications across multiple types of Midpoint accesses. You will propel the customer into the next phase of product suite modernization by

Modernization Cyber Systems Administrator - SA2

Lockheed Martin Corporation

Maryland, USA

Full-time

Job Description The Work: We are seeking professionals interested in Systems Administration. Here, you are going to provide life-cycle services to advance mission in support of Cybersecurity and SIGINT midpoint collection. You will modernize and sustain capabilities to include providing new features and enhancements to Front End Solutions systems. This will allow for products to work at-scale with processing of target communications across multiple types of Midpoint accesses. You will propel t

Information System Security Engineer (ISSE)

Parsons Services Company

Chantilly, Virginia, USA

Full-time

In a world of possibilities, pursue one with endless opportunities. Imagine Next! When it comes to what you want in your career, if you can imagine it, you can do it at Parsons. Imagine a career working with exceptional people sharing a common quest. Imagine a workplace where you can be yourself. Where you can thrive. Where you can find your next, right now. We've got what you're looking for. Job Description: Parsons is looking for a sharp and talented Information Systems Security Engineer (I

Senior System Administrator / Windows / VMWare / Onsite / Dallas, TX

Motion Recruitment Partners, LLC

Dallas, Texas, USA

Full-time

A design firm in the DFW area is growing their team and looking to hire a Senior System Administrator ona full time direct hire basis. This role is onsite in their Dallas, TX office. For this opportunity the responsibilities will involve leading infrastructure projects, infrastructure management of their on prem VMWare vSphere infrastructure, including ESXi hosts, vCenter Server, vSAN, and associated virtualization components, managing Windows server infrastructure, and overseeing storage infras

Classified Systems Administrator

The MITRE Corporation

San Diego, California, USA

Full-time

Why choose between doing meaningful work and having a fulfilling life? At MITRE, you can have both. That's because MITRE people are committed to tackling our nation's toughest challenges-and we're committed to the long-term well-being of our employees. MITRE is different from most technology companies. We are a not-for-profit corporation chartered to work for the public interest, with no commercial conflicts to influence what we do. The R&D centers we operate for the government create lasting im

System Administrator

Base-2 Solutions, LLC

Annapolis, Maryland, USA

Full-time

Job Description Base-2 Solutions is seeking a System Administrator (SA-1) to support DevOps team on VISTA TTO. This role requires a self-motivated individual who can collaborate with the development team, capabilities providers, and mission customers to migrate existing applications and services off legacy hardware and onto enterprise compute frameworks. Required Education Five (5) years experience as a SA in programs and contracts of similar scope, type, and complexity is required. Bachelor's

Principal Azure Cloud Engineer

ManTech

Chantilly, Virginia, USA

Full-time

MANTECH seeks a motivated and experienced Principal Azure Cloud Engineer to join our team in Chantilly, VA. In this role, you will support mission-critical operations by designing, implementing, and managing Azure cloud infrastructure. You will collaborate with cross-functional teams to enhance cloud environments using modern tools and best practices. Responsibilities include but are not limited to: Supporting Azure cloud services and infrastructure using Infrastructure as Code (IaC) tools suc

Senior Engineer

General Dynamics

Bayview, Idaho, USA

Full-time

Type of Requisition: Pipeline Clearance Level Must Currently Possess: None Clearance Level Must Be Able to Obtain: Secret Public Trust/Other Required: None Job Family: Engineering (General) Job Qualifications: Skills: Computer Literacy, Linux, Operating Systems (OS) Certifications: None Experience: 4 + years of related experience ship Required: Yes Job Description: Engineer Senior The candidate will work as part of a highly skilled team to design, fabricate, modify and evaluate electron

Senior Network Engineer - TS/SCI w/Poly

Jacobs

Annapolis, Maryland, USA

Full-time

Your Impact: Are you interested in using your skills to help shape the Cyber, Security, & Intel space? If so, look no further. Amentum is seeking a Senior Network Engineer to join our team of passionate individuals in Annapolis Junction, MD. In this role you will support challenging, mission-critical projects that make a direct impact on the Nation's security and intelligence mission. As the lead of technical efforts across organizations, you will manage the overall operational health of a cus

Classified Systems Administrator

Aerospace Corporation

Chantilly, Virginia, USA

Full-time

The Aerospace Corporation is the trusted partner to the nation's space programs, solving the hardest problems and providing unmatched technical expertise. As the operator of a federally funded research and development center (FFRDC), we are broadly engaged across all aspects of space- delivering innovative solutions that span satellite, launch, ground, and cyber systems for defense, civil and commercial customers. When you join our team, you'll be part of a special collection of problem solvers,

System Administrator

SGS Consulting

Lexington, Massachusetts, USA

Contract

Job Title: Systems Administrator - JP00001789 (Active Secret required) Duration: 3+ years Client: Defense Research Lab Location: Lexington, MA Description: Maintains operation of multi-user computer systems, including coordination of infrastructure and cloud responsibilities. Develops and designs core operating system builds. Responsible for coding, virtualization, and automation of systems. Sets up administrator and service accounts, maintains an active directory of users and system documentati

System Administrator

Nightwing

Remote or Sterling, Virginia, USA

Full-time

Nightwing provides technically advanced full-spectrum cyber, data operations, systems integration and intelligence mission support services to meet our customers' most demanding challenges. Our capabilities include cyber space operations, cyber defense and resiliency, vulnerability research, ubiquitous technical surveillance, data intelligence, lifecycle mission enablement, and software modernization. Nightwing brings disruptive technologies, agility, and competitive offerings to customers in th