Secure our Nation, Ignite your Future Currently, ManTech is seeking a motivated, career and customer-oriented Network Systems Administrator, Subject Matter Expert to join our team in Washington, DC. In this role, you will provide direct on‐site/off‐site support for the deployment of information technology (IT) equipment to critical incident sites and special events. You will be providing expert-level hardware and software support, perform advanced systems analysis, troubleshooting, and oversee the implementation of IT solutions to ensure optimal performance, reliability, and security. You will also serve as a key resource for technical guidance and provide mentorship to junior staff. Responsibilities include but are not limited to: * Lead, plan, and provide Tier 1, 2, and 3 HW/SW troubleshooting support for Service Desk issues. * Conduct advanced hardware and software analysis including product research, evaluation, testing, and recommendations. * Lead the installation, configuration, and troubleshooting of equipment, including servers, desktops, laptops, printers, and LAN devices. * Provide expert-level on-site and off-site hardware and software support throughout the deployment lifecycle of assigned missions. * Oversee the installation, testing, and maintenance of software applications to streamline business operations. * Support IT system installations, moves, and office consolidations at field sites, addressing infrastructure issues such as wiring and LAN capacity. * Trial or pilot new applications or systems to assess their effectiveness. * Offer desk-side support to executive-level users and manage HW/SW installations, moves, additions, and changes (IMAC). * Supports critical incident sites and special events including Critical Incident Management, Emergency Support Function, and COOP for mission-critical tasks. * Serve as a subject matter expert for complex technical issues and projects. * Plan and direct resources to accomplish mission objectives. Basic Qualifications: * A bachelor's degree in a related field (Computer Science or Management Information Systems). In lieu of a degree, an additional (6) years of experience. * 8+ years of extensive experience in computer hardware, software, networking systems, and implementation, configuration, use, and troubleshooting of computer systems. * Strong troubleshooting skills with the ability to effectively manage multiple tasks and resolve complex issues with enterprise hardware. * Experience in managing, testing, and deploying security patches, COTS software updates, group policy and STIGs. * Availability to respond to critical incidents or service requests on a 24/7 basis. * Excellent communication, customer service, organizational skills, and attention to detail. * Ability to work independently and as part of a team; familiarity with federal regulations is a plus. Preferred Qualifications: * Proficient with ServiceNow. * Experience in supporting executive-level users. * Strong leadership skill and ability to mentor junior staff. * Ability to provide strategic technical guidance and recommendations. * Proficiency in advanced troubleshooting and root cause analysis. * Strong presentation and communication skills for technical and non-technical audiences. * Certifications such as CompTIA A+, Network+, Security+, or similar. Clearance Requirements: * Must possess a current Top Secret security clearance. * Must be a U.S. citizen. Physical Requirements: * Must be able to be in a stationary position more than 50% of the time * Must be able to communicate, converse, and exchange information with peers and senior personnel * Constantly operates a computer and other office productivity machinery, such as a computer * The person in this position frequently communicates with co-workers, management, and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations * The person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, etc. The projected compensation range for this position is $122,600-$204,200. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, ManTech invests in it's employees beyond just compensation. ManTech's benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, Short Term and Long Term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections. For 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 (703) 218-6000. 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. 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