Senior Systems Administrator

Company: ManTech International Corporation
Location: Chantilly
Posted on: July 29, 2022

Job Description:

Where applicable, confirmation that you meet customer requirements for facility access which may include proof of vaccination and/or attestation and testing, unless an accommodation has been approved.Secure our Nation, Ignite your FutureSystems Administrator, PrincipalManTech is seeking a motivated, mission oriented Principal Systems Administrator in the Chantilly, VA area. As a Principal Systems Administrator on our ICON team, you will be responsible for working as part of a small focused technical team to test, maintain, implement and deliver our solution. Duties include document, implement, troubleshoot, maintain, and test our PL-3 reference architecture consisting of Windows Server, Red Hat Linux, Virtual Servers and Desktop Infrastructure, and core applications and services based on those platforms. Key technology areas include VMware vCenter infrastructure, Windows Server 2019, Active Directory, Group Policies, Public Key Infrastructure, Microsoft SQL Server, Microsoft Internet Information Server, WSUS, PowerShell, Splunk, Tanium, and McAfee Security Solutions. The ideal candidate will also possess experience with system verification and testing; patch management; issue and problem management; RMF/JSIG assessment and authorization.The Systems Administrator, Principal will:Conduct monthly patching on the multiple environments that make up the PL-3 reference architecturePerform system operability verification tests.As part of the team help maintain documentation to include system configuration, knowledge base, operation guides and standard operating procedures.Interact with and help the PL-3 reference architecture customers with the implementation of the reference architecture.Participate in preparing the PL-3 reference architecture for assessment and authorization (A&A).Participate in technical exchange meetings (TEMs) with other technical professionals.Assist the Systems Engineers with conducting research and troubleshooting.Develop and document systems administration standard operating procedures.Install, configure, troubleshoot, and maintain servers, workstations, and peripherals (virtual and physical)Collaborate with team members to maintain consistency in design and implementation, as well as ensuring environment stability and providing notification of issues/concernsCreate and modify scripts to automate tasksWork under general direction, with limited supervisionPositions Requirements:Requires Bachelor's degree and 7-9 years of related experience.Extensive experience with MS Office, Excel, Word, Visio, and PowerPoint.Experience with scripting languages such as PowerShell.Experience with configuring and troubleshooting Active Directory Group Policy.Knowledge of DISA Security Technical Implementation Guide (STIG) and Assured Compliance Assessment Solution (ACAS)Knowledge of Dynamic Host Configuration Protocol (DHCP), and Domain Name System (DNS).Strong organizational, written, and oral communication skillsAbility to explain moderately complex ideas or information clearlyMust possess analytical and critical thinking skillsSkilled in identifying and solving problems by gathering and applying information from a variety of materials or sourcesMust possess the ability to listen and receive feedback, and consistently share information with the teamProven ability to multi-task and prioritize responsibilitiesExcellent attention to details and diligent adherence to deadlines and deliverablesMust possess DoD 8570 IAT-II certificationExperience with Agile Scrum MethodologyPhysical Requirements:Operate computer equipment. Ability to stand and/or sit 50%. Must be able to detect, identify, recognize, observe, assess, and handle stress and work well under pressure.Security Requirements:Must possess an active TS/SCI clearance with ability to obtain a Counterintelligence (CI) Polygraph.

DDISAPFor all positions requiring access to technology/software source code that is subject to export control laws, employment with the company is contingent on either verifying U.S.-person status or obtaining any necessary license. The applicant will be required to answer certain questions for export control purposes, and that information will be reviewed by compliance personnel to ensure compliance with federal law. ManTech may choose not to apply for a license for such individuals whose access to export-controlled technology or software source code may require authorization and may decline to proceed with an applicant on that basis alone.ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment because of race, color, sex, religion, age, sexual orientation, gender identity and expression, national origin, marital status, physical or mental disability, status as a Disabled Veteran, Recently Separated Veteran, Active Duty Wartime or Campaign Badge Veteran, Armed Forces Services Medal, or any other characteristic protected by law.If you require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please contact ManTech's Corporate EEO Department at . ManTech is an affirmative action/equal opportunity employer - minorities, females, disabled and protected veterans are urged to apply. ManTech's utilization of any external recruitment or job placement agency is predicated upon its full compliance with our equal opportunity/affirmative action policies. ManTech does not accept resumes from unsolicited recruiting firms. We pay no fees for unsolicited services.If you are a qualified individual with a disability or a disabled veteran, you have the right to request an accommodation if you are unable or limited in your ability to use or access as a result of your disability.

Keywords: ManTech International Corporation, Chantilly , Senior Systems Administrator, IT / Software / Systems , Chantilly, Virginia