System Administrator

• Administer and maintain Active Directory forests, domains, trust relationships, replication services, and enterprise directory components
• Manage and troubleshoot identity services, including DNS integrated AD functions, authentication, Kerberos/NTLM, group membership, and object lifecycle management
• Create, maintain, and troubleshoot Group Policy Objects (GPOs)
• Perform Tier 2/3 directory service support
• Support AD integrated services including certificate services, federation services, domain controllers, and directory dependent applications
• Execute domain controller deployments, configuration updates, schema extensions, and lifecycle upgrades
• Monitor AD health, replication status, event logs, and performance
• Maintain directory service documentation, configuration baselines, and operational procedures

Active Directory Systems Administrator – TS/SCI w/Poly

• Ensure integrity, availability, and secure operation of enterprise public key infrastructure services
• Manage certificates, tokens, authentication services, and identity related security functions
• Issue, manage, and maintain certificates, tokens, and authentication credentials for users and systems
• Support full lifecycle PKI operations
• Provide knowledge-based support for customers, Trusted Agents (TAs), and system administrators
• Maintain PKI infrastructure health by monitoring certificate stores, expiration timelines, CRL validation, and associated authentication systems
• Ensure compliance with enterprise multifactor authentication requirements
• Support identity related incident response by diagnosing authentication failures

PKI Systems Administrator – TS/SCI with Polygraph

• Administrating day-to-day Linux and/or Windows IT systems to include system availability, backup/restore, configuration changes, maintaining and patching both physical and virtual.
• Must be knowledgeable in the support and administration of VMWare, hosting and managing virtual machines, and data storage such as Network Attached Storage (NAS) and Storage Area Network (SAN) hardware.
• Install and configure workstations, servers, printers, and data, voice, or video network components.
• Install and maintain software releases.
• Maintain data confidentiality, integrity, and availability.
• Consult with clients, hardware and software vendors, application programmers, and the network team.
• Provide technical support for development, test, and production environments.
• Perform capacity planning, system administration, system tuning, problem analysis and hardware/software upgrades.
• Develop administrative policies, documentation, and procedures to ensure that assets are properly maintained and operated.
• Perform testing and establish system acceptance criteria on current and new hardware and software.
• Determine training needs and develop system administration guidelines tailored to the work environment.
• Configure and build the server hardware and network interfaces to meet client and vendor technical specifications.
• Build client profiles and system configurations for software distribution equipment.
• Respond to system alerts and engage in troubleshooting and problem resolution.

Systems Administrator, Government

• Manage and administer our project management system, currently Trimble Unity Construct (TUC) and accompanying mobile platform, Trimble Unity Field (TUF), and other company systems as assigned.
• Administer system changes, modifications, and enhancements such as modules, new workflows, custom reports, and related updates to ensure all changes are functioning properly; maintain a system changes log with timely updates for recordkeeping purposes.
• Observe, document, and raise awareness of system needs, required resources, and potential gaps, including practical approaches to close or eliminate those gaps in the system.
• Serve as Real Projectives’ primary point of contact with system vendors for support, performance, troubleshooting, and administration.
• Coordinate with the vendor’s in-house account representative and/or business analyst to address performance, quality, issues, resolutions, and user license tracking.
• Deliver systems orientation and training for new employee onboarding.
• Lead and facilitate bi-weekly PM Systems Committee meetings to outline deliverables, establish priorities, and plan appropriate system strategies.
• Maintain system documentation, including processes, protocols and standard operating procedures.
• Develop reporting tools and templates to support data-driven decision making.
• Stay abreast of the latest system updates, upgrades, new features, and services to anticipate how best to adapt and align services to meet future needs.
• Demonstrate professionalism, timely service delivery, and a commitment to positive internal customer experiences.
• Foster productive relationships with and engage systems vendors and their account and support teams.
• Process vendor work orders and service agreements as needed.
• Track schedules and coordinate with resources to ensure timely completion of special projects and initiatives underway.
• Monitor progress and issues on all active initiatives and adjust as necessary to overcome hurdles and achieve expectations.
• Provide timely communications and act to resolve issues with expediency and diligence.

Systems Administrator

• Provides advanced systems administration, infrastructure management, cybersecurity compliance, and enterprise modernization support
• Administer Windows Server, Linux systems, and enterprise infrastructure
• Manage VMware virtualization and enterprise storage solutions
• Support Cisco networking and certificate lifecycle management
• Maintain STIG compliance and RMF support activities
• Lead migrations, upgrades, and modernization projects

Senior System Administrator

• Maintains smooth operation of multi-user computer systems, including coordination with network engineers.
• Monitors and manages system resources, including CPU usage, disk usage, and response times to maintain operating efficiency.
• Performs systems security administration functions, including creating user profiles and accounts.
• Other duties may include setting up administrator accounts, maintaining system documentation, tuning system performance, installing system wide software and allocating mass storage space.
• Interacts with users and evaluates vendor products.
• Makes recommendations to purchase hardware and software, coordinates installation and provides backup recovery.
• Develops and monitors policies and standards for allocation related to the use of computing resources.
• Ability to implement, maintain, and manage physical and virtual systems and upgrades.
• May assign responsibilities for less experienced staff.
• Manage and maintain hardware and back-end software to support end users.
• Support multiple centralized anti-virus and patch management systems.

• Configure, deploy, and manage company laptops and peripherals; maintain accurate inventory tracking from provisioning to secure decommissioning.
• Maintain local and cloud-based network infrastructure (firewalls, switches, VPNs), ensuring redundancy and optimal remote access security.
• Oversee company-wide software installations, patching, and updates to ensure stability and regulatory compliance.
• Monitor logs and security tools for threats; lead vulnerability management and proactive incident response.
• Ensure IT operations meet NIST, ISO 27001, and CMMC standards; maintain detailed security documentation for business proposals and audits.
• Enforce MFA, least-privilege principles, and data loss prevention (DLP) strategies.
• Conduct regular penetration testing, vulnerability scans, and system hardening.
• Act as the escalation point for technical issues, resolving tickets efficiently to minimize downtime.
• Lead cybersecurity awareness training for staff, focusing on phishing prevention and risk management.
• Manage seamless transitions for new and departing employees, including hardware shipping and secure data sanitization.
• Forecast and manage the IT budget for hardware, software, and telecommunications.
• Align IT security strategy with business objectives and develop formal IT procedures.
• Provide advanced SharePoint management and support secure conferencing equipment in meeting rooms.
• Manage office access controls, including key fobs, parking garage cards, and building security assignments.
• Maintain office printer functionality through troubleshooting, routine maintenance coordination, and timely issue resolution.

• Manage the full lifecycle of Linux servers and Kubernetes containers in a heterogeneous environment.
• Oversee everything from initial configuration and installation to ongoing monitoring, patching, and security.
• Handle complex troubleshooting, performance tuning, and repairs to ensure stability and integrity of mission-critical infrastructure.
• Collaborate closely with a high-performing engineering team to meet shared goals.
• Serve as the primary point of contact for all Linux-related activities while providing exceptional customer service.
• Act as a proactive advocate for the environment, constantly identifying and implementing opportunities for system improvement.
• Establish high-level technical guidance and enforce rigorous operational standards across the team.

Principal IT Systems Administrator

• Provide system management, daily monitoring and optimization
• Provide technical leadership and execution
• Support HPE’s mission-critical customers, providing pre-installation configuration, on-site integration, administration
• Maintain system software and firmware revisions, including patches, updates, and OS upgrades
• Solve system hardware, software, and third-party software issues

Federal HPC Linux System Administrator, Clearance required TS/SCI with Poly

• Work to be performed at government customer site.
• Work in an environment where you can help design the architecture and develop solutions to meet organizational needs.
• Looking for an innovative, and motivated individual to join a small, talented, and hardworking Linux team in a hybrid cloud environment.
• This team creates, maintains, and troubleshoots Linux instances on multiple networks, in multiple architectures.

Linux Administrator, SA II – Government

• Provide preventative and remedial hardware maintenance to ensure system reliability and availability.
• Deploy, install, and implement hardware solutions in operational environments.
• Analyze documented and derived system requirements to prepare hardware specifications.
• Conduct site surveys to assess technical readiness and infrastructure needs.
• Develop engineering plans and site Technical Design Packages (TDPs).
• Configure and document computers, networking devices, servers, storage systems, and peripheral equipment.
• Prepare site installation documentation, test plans, and test reports.
• Identify system issues, validate root causes, and ensure solutions fully satisfy user and mission requirements.
• Prepare reports and recommendations related to existing and emerging hardware technologies.

Voice System Administrator – Government

• Provide engineering solutions for various and unique problem sets and customers in a government software hosting facility.
• Deploy and maintain physical and virtual hardware infrastructure, to include virtual machines and containers.
• Perform routine maintenance and configuration changes to various physical and virtual hosts.
• Installation, configuration and troubleshooting of hardware and software issues on servers, workstations, and IT equipment.
• Maintain system backups and disaster recovery plans.
• Manage user accounts and permissions.
• Deploy and maintain software applications.
• Troubleshoot technical issues.
• Maintain documentation to include knowledge base, incident response actions, system configurations, and other information related to system administration.
• Provide technical support to customers, ranging from resolving technical issues to providing guidance and best-practices.
• Secure information systems and applications to current DoD guidance.
• Maintain configuration and security posture of information systems through continuous monitoring and routine security events/reporting.
• Participate in project planning using Agile methodology.
• Provide networking support to on-premises infrastructure.
• Understanding and familiarity of Linux operating system and virtual networking.

• Configure and maintain Linux and Windows servers.
• Ability to automate processes such as device hardening, patching, vulnerability remediation, system monitoring of Windows and Linux servers.
• Apply fixes, patches and upgrades in a timely fashion.
• Troubleshoot server issues.
• Administer customer accounts.
• Deploy monitoring tools.
• Deploy applications and tools.
• Assist with escalated customer tickets.

System Administrator II – Air Theory

• Work to be performed at a government customer site.
• Help design the architecture and develop solutions to meet organizational needs.
• Join a small, talented, and hardworking Linux team in a hybrid cloud environment.
• Create, maintain, and troubleshoot Linux instances on multiple networks, in multiple architectures.

Junior Linux Administrator – Government

• Facilitate infrastructure management, continuous integration, environment configuration and deployment
• Support the project’s compliance and security posture.
• Focus on delivering the automation that enables all the other teams to operate smoothly.
• Coordinates with the Help Desk to identify/resolve issues at a Tier 2 level

Senior Systems Administrator, Linux

• Design, implement, and maintain enterprise Linux infrastructure across on-premises data centers and cloud environments
• Review and analyze process and system specifications to ensure delivery requirements are met across hybrid Linux environments
• Architect and manage containerized infrastructure using Docker and container orchestration platforms
• Design and implement cloud infrastructure solutions on AWS and Azure
• Recommend enhancements and updates to Linux operating systems, system software products, Docker containers, and cloud infrastructure components
• Ensure the Company's Reliability, Availability, and Serviceability (RAS) metrics are sustained
• Document test plans and create/revise Bash, Python, or other scripting languages for automation
• Implement and update monitoring tools for Linux systems, containerized applications, and cloud resources
• Monitor operating system and cloud infrastructure performance to achieve optimum performance levels
• Mentor and supervise junior staff in project-level tasks, Linux administration best practices, Docker containerization, and cloud operations

Senior Systems Administrator/Engineer – Linux

• Direct staff in the execution of enterprise Apple device management, security, and deployment activities
• Ensure FINRA's Mac ecosystem meets defined quality standards
• Focus on JAMF Pro administration, application packaging, and maintaining security compliance
• Review and analyze complex macOS system specifications, JAMF policies, and MDM configurations
• Leverage AI tools to accelerate analysis, identify patterns, and generate insights
• Serve as the subject matter expert for Apple ecosystem management
• Design, implement, customize, maintain, and administer complex macOS environments
• Recommend and lead implementation of macOS updates, security patches, and hardware refresh cycles
• Develop and maintain application packaging workflows for macOS software distribution
• Lead security vulnerability remediation efforts for macOS devices
• Implement and manage Single Sign-On (SSO) integration for macOS devices
• Configure and maintain conditional access policies and device compliance requirements
• Evaluate Apple ecosystem trends, JAMF updates, and emerging Mac management technologies
• Document and communicate test results for JAMF deployments and security remediation activities
• Mentor junior staff on Apple device management best practices
• Participate in internal process improvement committees and Apple/JAMF user groups

Lead Systems Administrator – Mac Systems

• Manage the day-to-day operations of Linux servers
• Ensure system stability, security, and efficiency
• Troubleshoot issues and automate tasks
• Support development or operations teams

Senior Linux System Administrator

• Deploy, manage, and scale applications and infrastructure supporting the DEFSMAC mission.
• Administer and maintain RKE2/Kubernetes cluster environments.
• Manage and support containerized applications using Docker.
• Perform system administration tasks within Unix/Linux environments, including troubleshooting and performance tuning.
• Develop and maintain automation scripts using Bash.
• Monitor system health, availability, and performance across containerized environments.
• Troubleshoot infrastructure and application-level issues across compute, storage, and networking layers.
• Support configuration management, system updates, and security compliance efforts.
• Collaborate with engineering and operations teams to support continuous integration and deployment workflows.
• Maintain documentation for system configurations, procedures, and operational support.

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