Senior Network Engineer

Leidos•Springfield, VA

About The Position

Seeking an experienced Senior Systems Engineer specializing in network systems to support mission-critical projects in a secure environment. The ideal candidate will have extensive experience in designing, implementing, and maintaining complex network infrastructures, and must hold an active TS/SCI clearance with Polygraph. At Leidos, we outthink, outbuild, and outpace the status quo because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 and moving faster than anyone else dares.

Requirements

Active TS/SCI clearance with Polygraph.
Bachelor’s degree in information technology, Computer Science, or related field, or equivalent experience or specialist certifications considered in lieu of degree.
8+ years of experience in systems engineering with a focus on network systems.
Expertise in Windows/Linux server administration, virtualization, and network security.
Certifications such as CompTIA Security+, VMware, or equivalent.

Nice To Haves

Experience supporting DoD or Intelligence Community environments.
Strong background in system hardening, vulnerability remediation, and compliance.
Excellent communication and technical documentation skills.
EC-DAS

Responsibilities

Design, deploy, and optimize secure network architectures for enterprise and classified environments.
Lead system performance tuning, troubleshooting, and disaster recovery planning.
Ensure compliance with security standards and protocols (DISA STIGs, RMF).
Collaborate with cross-functional teams to deliver high-availability solutions.
Automate system administration tasks using scripting (PowerShell, Bash).
Manage Active Directory, virtualization platforms (VMware, Hyper-V), and network monitoring tools.