Windows Systems Administrator

DMI is a leading provider of digital services and technology solutions, headquartered in Tysons Corner, VA. With a focus on end-to-end managed IT services, including managed mobility, cloud, cybersecurity, network operations, and Application development, DMI supports public sector agencies and commercial enterprises around the globe. Recognized as a Top Workplace, DMI is committed to delivering secure, efcient, and cost-effective solutions that drive measurable results. Learn more at www.dminc.com

DMI, LLC is seeking a Windows Systems Administrator to join us to support the configuration, operation, and optimization of Windows-based environments with a strong focus on certificate services and PKI management. The role involves managing daily operations, troubleshooting complex system and network issues, and providing technical consultation and support to IT staff. The administrator will ensure secure and efficient system performance, lead certificate lifecycle management, and maintain compliance with enterprise standards.

Duties and Responsibilities:

Administer and support Windows Server environments, including Active Directory and related services.
• Manage and maintain Public Key Infrastructure (PKI), Active Directory Certificate Services (ADCS), and enterprise certificates.
• Oversee the issuance, renewal, revocation, and troubleshooting of digital certificates to ensure secure authentication and communication.
• Plan, monitor, and optimize system performance and resource utilization; conduct capacity analysis and planning.
• Provide assistance to users and applications in accessing and securely using business systems that rely on certificates.
• Implement, configure, and test system and network changes including hardware, operating systems, and attached devices.
• Monitor system and network health, evaluate utilization, and resolve operational issues.
• Troubleshoot at both the physical (hardware-level) and logical (protocol-level, e.g., TLS, SSL) layers.
• Participate in design, review, and implementation of secure network and system architectures for enterprise environments.
• Maintain compliance with security and infrastructure standards, including communication protocols (e.g., TCP/IP, TLS/SSL).
• Provide technical consultation, training, and support to IT staff regarding certificates, PKI, and secure system operations.
• Diagnose and resolve complex system and communication issues related to certificates and encryption.

education and Years of experience:

• Bachelor’s degree in Computer Science, Information Technology, or related field, or equivalent experience.
• 5 years of experience in IT system design and/or sustainment

Required and Desired Skills/Certifications:

• Proven experience as a Windows Systems Engineer with a focus on Active Directory, ADCS, and PKI.
• Hands-on experience managing digital certificates, TLS/SSL, and secure authentication mechanisms.
• Strong knowledge of Windows Server administration, group policies, and system configuration.
• Familiarity with certificate lifecycle management tools and monitoring solutions.
• Experience troubleshooting system, network, and encryption-related issues at multiple layers.
• Strong problem-solving, documentation, and communication skills.

Clearance Requirements: Successful completion of a Public Trust background investigation and/or a Public Trust clearance.

Min Citizenship Status Required: Must be a U.S. Citizen

Physical Requirements: Onsite support at FTC Headquarters at least 2 times per week or as needed to meet the needs of the program

Location: Remote, US

DMI is a diverse, prosperous, and rewarding place to work. Our culture is shaped by five core values that guide how we work, grow, and succeed together:

• Do What’s Right – We lead with honesty and integrity.
• Own the Outcome – We take responsibility and deliver.
• Deliver for Our Customers – We are relentless about delivering value.
• Think Bold, Act Smart – We innovate with purpose.
• Win Together – We collaborate and celebrate our success.

These values aren’t just ideals-they show up in how we support every part of your well-being:

• Convenience/Concierge – Virtual health visits, commuter perks, pet insurance, and entertainment discounts that make life easier.
• Development – Annual performance reviews, tuition assistance, and internal career growth opportunities to help you thrive.
• Financial – Generous 401(k) matches, life and disability insurance, and financial wellness tools to support your future.
• Recognition – Annual awards, service anniversaries, referral bonuses, and peer-to-peer shoutouts that spotlight your achievements.
• Wellness – Healthcare coverage, wellness programs, flu shots, and biometric screenings to support your health.

DMI values employees for their talents and contributions, and we take pride in helping our customers achieve their goals. Because when we live our values, we all win together.

***************** No Agencies Please *****************

Applicants selected may be subject to a government security investigation and must meet eligibility requirements for access to classified information. US citizenship may be required for some positions.

Not ready to apply? Connect with us for general consideration.