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Provide advanced Tier 2/3 administration and support for mission-critical IT systems. Troubleshoot complex issues, manage configuration, patching, capacity planning, and performance optimization across Linux/UNIX and Windows environments. Support servers, storage, networking, mobile devices, and system integration while contributing to architecture, documentation, and operational readiness.

Lead system administration for Linux and Windows in classified, high-availability environments. Provide Tier 1–3 support across client, server, storage, and network systems; manage accounts, patching, vulnerability scanning, configuration management, VDI/thin clients, and ITSM processes. Collaborate with ISSOs and leadership to maintain compliance and resolve complex infrastructure issues.

Support planning, execution, and evaluation of system test activities for mission-critical programs. Assist developing and executing test plans, collect and analyze test data, apply statistical methods, support modeling and simulation, coordinate test events, document results, and contribute to test readiness and configuration/data management under guidance.

Support national security operations by applying machine learning, statistical analysis, and scalable data processing to large datasets. Build automated pipelines, curate and transform data, develop and refine analytical algorithms and models, create visualizations and dashboards, and translate mission requirements into reproducible analytics to inform stakeholders.

Apply advanced data science, machine learning, and statistical techniques to large-scale cyber and network datasets. Build data pipelines, curate and normalize data, develop and refine analytical models (including NLP/LLMs), create visualizations and automated workflows, and translate mission requirements into actionable analytics to support national security operations.

Support design, implementation, and maintenance of network infrastructure. Monitor performance, troubleshoot connectivity, assist with configuration, upgrades, security practices, automation, documentation, and contribute to network design and reliability under guidance of Network and System Administrators.

Design, implement, and sustain enterprise Cisco and Arista network infrastructure. Support LAN/CAN/WAN, optimize performance, apply SSP/STE/STN security requirements, implement VPNs, firewalls, load balancing, VoIP, IPSec, NAT, and GRE. Monitor performance, lead upgrades and cutovers, maintain documentation, mentor junior engineers, participate in on-call support and occasional travel.

Provide 24x7 monitoring, administration, troubleshooting, and maintenance of mission-critical telecommunications and network infrastructure. Respond to alerts and incidents, coordinate with operations and ISP teams, perform hardware/software/network repairs and upgrades, document procedures, and maintain security and operational compliance supporting continuous mission readiness.

Provide hands-on system administration and day-to-day IT support for client/server, storage, network, and mobile devices. Monitor performance, troubleshoot issues, perform OS installation and patching (Linux/Windows), deliver Tier 1/2 support, maintain documentation, and escalate issues to management as needed.

Lead design, development, testing, and maintenance of complex, performance-driven software systems. Provide technical leadership across teams, guide architecture and technology selection, oversee development and operational readiness, debug and optimize systems, create documentation, and coordinate with stakeholders and engineers to meet mission requirements.