Senior Network Administrator

Leidos•Piketon, OH

1d•Onsite

About The Position

Leidos is seeking a Senior Network Administrator for an exciting and rewarding opportunity at the DOE Portsmouth (Piketon, Ohio) site. This role involves providing advanced technical leadership in the design, implementation, optimization, and security of the organization’s enterprise network infrastructure. The Senior Network Administrator will serve as a subject matter expert, lead complex troubleshooting efforts, and contribute to network architecture, standards, and long-term strategy, while also mentoring junior staff.

Requirements

Bachelor’s degree in Computer Science, Information Technology, or a related field with a minimum of two (2) years of progressive experience supporting enterprise networks, or equivalent hands-on experience.
Must be able to obtain and maintain a DOE Q security clearance.
Demonstrated experience designing and supporting complex, multi-site enterprise network environments.
Advanced expertise with Cisco networking platforms, including IOS, Nexus OS, routing protocols, and switching technologies.
Strong experience with Cisco wireless, ISE, Prime, and secure remote connectivity solutions.
Proven ability to lead technical initiatives and act as a network subject matter expert.
Must have DOE Ports experience to be considered.

Nice To Haves

Advanced Cisco certifications (e.g., CCNP or higher).
Experience in regulated or government environments.
Familiarity with cloud networking and hybrid architectures.
Strong documentation, communication, and stakeholder engagement skills.

Responsibilities

Design, implement, and maintain scalable, secure, and highly available enterprise network architectures across on-premises and hybrid environments.
Lead complex troubleshooting efforts for critical network incidents, outages, and performance issues.
Serve as the technical lead for network upgrades, migrations, refreshes, and major infrastructure initiatives.
Architect and maintain advanced network security solutions including firewalls, IDS/IPS, VPNs, segmentation, and zero-trust principles.
Develop and enforce network standards, best practices, and operational procedures.
Perform capacity planning, performance tuning, and risk assessments to support business growth and resiliency.
Mentor and provide technical guidance to Network Administrators and junior IT staff.
Partner with cybersecurity, systems, cloud, and application teams to ensure secure and reliable end-to-end solutions.
Lead disaster recovery and business continuity planning for network infrastructure, including regular testing and documentation.
Ensure compliance with organizational policies, security frameworks, and regulatory requirements.
Participate in vendor evaluations, solution selection, and lifecycle management.