Tier 3 Systems Administration Support

🕒 July 10, 2025

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3500 Square

WebsiteLinkedInAll Job Openings

11 - 50 employees

Founded 2023

🔒 Cybersecurity

🤝 B2B

🏛️ Government

Cybersecurity • B2B • Government

3500 Square is an SBA-certified, Service-Disabled Veteran-Owned Small Business (SDVOSB) founded by a U. S. Army veteran that provides expert IT services to streamline operations, modernize technology, and reduce costs for its clients. Backed by over 25 years of IT experience, the company specializes in IT managed services, software development, cloud management, network design and implementation, and cybersecurity, and also offers bilingual customer support and IT consulting. As a small, diverse firm (8(a), HubZone, MBE, SDB), 3500 Square emphasizes personalized, tailored solutions for business and government customers to meet specific objectives and compliance needs.

📋 Description

• Manage and sustain enterprise services such as Active Directory (AD), Microsoft Entra ID (Azure AD), System Center Operations Manager (SCOM), and the Quest tool suite to ensure availability and scalability across the enterprise. • Implement schema extensions, manage Group Policy Objects (GPOs), domain trusts, and Organizational Unit (OU) configurations using Quest and other enterprise tools. • Provide advanced support and optimization for cloud environments, including MED365 Azure services, eDiscovery, and Exchange Online. • Ensure authentication, synchronization, user provisioning, and encryption compliance across both AD and cloud-based systems. • Monitor and manage data encryption services; deploy encryption clients and enforce compliance with enterprise and DoD encryption standards. • Customize enterprise monitoring rules and produce performance metrics related to uptime, downtime, and overall system health using tools like SCOM. • Develop and execute disaster recovery procedures and ensure compliance with Security Technical Implementation Guides (STIGs) for monitoring infrastructure. • Support PKI/PKE integration and compliance per DoDI 8520.02 requirements. • Manage Exchange Online services, including mail flow, distribution lists, shared mailboxes, migrations, and service availability. • Administer eDiscovery processes, including data collection, analysis, and responses to legal and regulatory requests; investigate incidents related to data leakage, phishing, and unauthorized data exposure.

🎯 Requirements

• Extensive hands-on experience managing enterprise-level systems in hybrid cloud and on-premise environments. • Proficiency in Active Directory administration, GPO management, domain trusts, and enterprise directory services. • Experience supporting cloud services such as Microsoft Entra ID (Azure AD), Exchange Online, and enterprise-level eDiscovery operations. • Knowledge of enterprise monitoring tools like SCOM and associated reporting metrics. • Familiarity with data encryption tools and compliance standards. • Strong analytical and problem-solving skills with excellent communication abilities. • Ability to obtain and maintain a Public Trust (Tier 3/NACLC) clearance. • Bachelor’s degree in IT / Cybersecurity / Data Science / IS / CS (ABET or CAE accredited), OR CISSP / Security+. • Microsoft Azure Solutions Architect Expert (AZ-305), OR Windows Server Hybrid Administrator Associate.

🏖️ Benefits

• Equal Employment Opportunity and E-Verify Statement • Health insurance • 401(k) matching • Flexible work hours • Paid time off • Remote work options