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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.