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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.

Minimum 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.

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. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

If you are a qualified individual with a disability and require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please email us at careers@mantech.com and provide your name and contact information.