We are looking for a Network Security Engineer to support and strengthen enterprise network operations in San Antonio, Texas. This role focuses on securing and optimizing both on-premises and Azure-based environments while helping maintain reliable connectivity across critical infrastructure. The ideal candidate brings deep hands-on experience with network security technologies, strong troubleshooting ability, and a practical approach to designing scalable, resilient solutions.Responsibilities:• Manage and support network infrastructure across Cisco-based on-premises environments and Microsoft Azure networking services to ensure secure, stable performance.• Diagnose complex network and hardware problems, perform root cause analysis, and restore service for high-impact incidents affecting business operations.• Evaluate existing network architecture and recommend improvements that align with future capacity, security, and operational requirements.• Oversee intrusion monitoring activities, investigate suspicious network events, and coordinate timely response actions to reduce security risk.• Maintain current security signatures, protection features, and related configurations so defensive systems remain effective against emerging threats.• Design secure network solutions for local data center and Azure Government cloud deployments in accordance with project goals and architectural standards.• Track and report network performance indicators to support operational reviews, service visibility, and ongoing infrastructure planning.• Implement firewall policy updates, web filtering adjustments, and other network security changes in accordance with approved requirements.• Perform lifecycle maintenance activities, including hardware and software upgrades for Cisco switches, Check Point firewalls, and F5 load balancing platforms.
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TamashekMake a Global Impact - Join the Mission at LeidosAre you ready to apply your linguistic expertise to meaningful work that directly supports national security? At Leidos, we bring together innovative minds, cutting-edge technology, and a commitment to excellence...
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