Infrastructure Support Administrator (System Administrator)

Agile Defense, LLC
United States, Maryland, Aberdeen Proving Ground
Aug 13, 2025
At Agile Defense we know that action defines the outcome and new challenges require new solutions. That's why we always look to the future and embrace change with an unmovable spirit and the courage to build for what comes next. Our vision is to bring adaptive innovation to support our nation's most important missions through the seamless integration of advanced technologies, elite minds, and unparalleled agility-leveraging a foundation of speed, flexibility, and ingenuity to strengthen and protect our nation's vital interests. Requisition #:1116 Job Title : Infrastructure Support Administrator (System Administrator) Location: 6560 Surveillance LP, Building 6007 Aberdeen Proving Ground, Maryland 21005 ( Hybrid, 2-3 Days on Site, not guaranteed) Clearance Level: Active DoD - Interim Secret Required Certification(s): * Must be a U.S. citizen and possess at minimum an Interim Secret clearance * Must be able to obtain an IAT-II certification within the first 90 days of hire. * Obtain a VCP certification within 6 months of hire SUMMARY PM MC provides integrated system-of-system solutions to Army and Joint warfighters, whose products include computer hardware, software, communications and network management infrastructure. The Mission Command Support Center (MCSC), under PM MC, is an integral part of the Program Executive Office - Command, Control, & Communications-Network (PEO-C3N) capability portfolio, providing a centralized capability to deploy, integrate, monitor, test, manage, modernize, evaluate and sustain fielded and enterprise-hosted MC capabilities. The MCSC mission is one of constant change and adaptation, always responding to enable deployment of new capabilities, while assuring current capabilities are at an optimal state of readiness throughout globally deployed and networked assets. The Infrastructure Administrator must display strong teamwork with the ability to work independently and actively participate on integrated teams. The primary responsibilities include Tiers I and II technical support for external and internal customers and provide workstation and server administration for the organization's Microsoft 2012R2 / 2016 / 2019 , Windows 10/11 environment and Linux. JOB DUTIES AND RESPONSIBILITIES * Provide helpdesk support including receiving calls, opening, logging, and resolving helpdesk tickets. * Provide user support for desktop infrastructure. Monitor Data Center architecture, investigate any issues observed, and resolve issues. * Work with Data Center Engineer team to resolve issues and escalate as-needed. Provides user account administration, i.e., account creation and management and password resets on Active Directory. * Provides user level support for domain resources, i.e., workstations, laptops, thin/zero clients, printers, Cisco VoIP phones, Virtual systems, Microsoft applications, and third-party applications. Isolates and resolves hardware and software problems involving the applications, the operating system, the hardware, the communications infrastructure, or any combination thereof. Install and configure operating systems and software as directed. * Perform monthly maintenance of the datacenter architecture. Performing other related duties as assigned. QUALIFICATIONS Required Certifications * Must be a U.S. citizen and possess at minimum an Interim Secret clearance * Must be able to obtain an IAT-II certification within the first 90 days of hire. * Obtain a VCP certification within 6 months of hire Education, Background, and Years of Experience * BS or BA preferred but not required * 3+ years of combined experience in helpdesk, desktop support and working in a virtualized environment, education can substitute for years of experience. ADDITIONAL SKILLS & QUALIFICATIONS Required Skills * Experience with Domain Controller components. * Excellent time management skills and ability to multi-task. * Ability to communicate effectively with customers and other employees via face-to-face communication, over the telephone or through email. * Strong attention to detail. * Strong customer-service orientation. * Understanding of current networking protocols, operating systems, and technology standards. * Must be able to work in a fast-paced work environment and have the ability to work alone. Preferred Skills * Knowledge of Cloud computing (both Azure and AWS). * Knowledge of MS Active Directory, MS SQL Server (as well as Postgres), VMWare and Ansible. * Knowledge of CI/CD automation. * Experience in working in an agile environment. WORKING CONDITIONS Environmental Conditions * Work is generally performed within an office environment at a satellite site, mixed with hybrid. Personnel on the team are all knowledgeable in their fields and willing to help teach as long as the candidate is willing to learn. Requirements change as the customer needs adjust, travel is light and is handled on a case by case in order to support the product for the customer. Strength Demands * Light - 20 lbs. Maximum lifting with frequent lift/carry up to 10 lbs. A job is light if less lifting is involved but significant walking/standing is done or if done mostly sitting but requires push/pull on arm or leg controls. Physical Requirements * Stand or Sit; Walk; Repetitive Motion; Use Hands / Fingers to Handle or Feel; Stoop, Kneel, Crouch, or Crawl; See; Push or Pull; Climb (stairs, ladders) or Balance (ascend / descend, work atop, traverse). Employees of Agile Defense are our number one priority, and the importance we place on our culture here is fundamental. Our culture is alive and evolving, but it always stays true to its roots. Here, you are valued as a family member, and we believe that we can accomplish great things together. Agile Defense has been highly successful in the past few years due to our employees and the culture we create together. What makes us Agile? We call it the 6Hs, the values that define our culture and guide everything we do. Together, these values infuse vibrancy, integrity, and a tireless work ethic into advancing the most important national security and critical civilian missions. It's how we show up every day. It's who we are. We also believe in supporting our employees by offering a competitive and comprehensive benefits package. To explore the benefits we offer, please visit our website under the Careers section. Happy - Be Infectious. Happiness multiplies and creates a positive and connected environment where motivation and satisfaction have an outsized effect on everything we do. Helpful - Be Supportive. Being helpful is the foundation of teamwork, resulting in a supportive atmosphere where collaboration flourishes, and collective success is celebrated. Honest - Be Trustworthy. Honesty serves as our compass, ensuring transparent communication and ethical conduct, essential to who we are and the complex domains we support. Humble - Be Grounded. Success is not achieved alone, humility ensures a culture of mutual respect, encouraging open communication, and a willingness to learn from one another and take on any task. Hungry - Be Eager. Our hunger for excellence drives an insatiable appetite for innovation and continuous improvement, propelling us forward in the face of new and unprecedented challenges. Hustle - Be Driven. Hustle is reflected in our relentless work ethic, where we are each committed to going above and beyond to advance the mission and achieve success. Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities Apply for this job