Senior Network Engineer

## Senior Network Engineer Apply locations:
2721 Technology Drive, Annapolis Junction, MDtime type:
Full time posted on:
Posted 10 Days Agojob requisition :
7827
** Worker Type
** Regular
* * Job Description
**** Primary Responsibilities
**** Enterprise / Traditional Networking
*** Design, implement, configure, and support enterprise network infrastructures, including routers, switches, firewalls, and security appliances.
* Install, configure, and maintain Cisco routing and switching platforms (e.g., Cisco 7600, 6500, and 3750 series or equivalent).
* Develop and translate network security requirements and policies into detailed device configurations.
* Monitor, troubleshoot, diagnose, and resolve network performance, connectivity, and security issues.
* Manage and support Cisco ASA firewalls, VPN technologies, intrusion detection and prevention systems (IDS/IPS), and network management tools.
* Design and implement enterprise‐level / ISP‐grade backbone networks to support mission‐critical operations.
* Understand and work with Cisco ACI concepts and operations, including fabric concepts and integration with existing network architectures.
* Understand basic physical connectivity, including fiber and Ethernet standards, optics, cabling, and patching.
** Linux Networking & Systems
*** Design, configure, and troubleshoot Linux-based networking (e.g., routing, bridging, VLANs, iptables/nftables, routing daemons, VPNs, firewalls) in production environments.
* Configure and maintain Linux systems used as network infrastructure components (e.g., virtual routers, VPN concentrators, security gateways, monitoring platforms).
* Utilize tools and technologies such as KVM, Ansible, Bash, Python, and related automation/orchestration frameworks to deploy and manage networked Linux systems.
* Work effectively at the intersection of traditional Cisco-style networking and Linux system administration, with a particular focus on deep Linux networking rather than general-purpose system administration alone.
** Systems Engineering
*** Design end‐to‐end systems that integrate Linux hosts, network equipment, and security components to meet defined operational and security requirements.
* Develop high‐quality technical documentation, including architecture diagrams, network/system design documents, and implementation plans.
* Translate mission and operational requirements into practical, implementable network and system architectures.
* Contribute to system integration, test, and validation activities for complex networked solutions.
** Additional Responsibilities
*** Lead and guide small technical teams in resolving complex network and infrastructure problems.
* Provide technical direction for the operation, configuration, optimization, and maintenance of network devices and Linux-based systems.
* Ensure network and system environments meet security, compliance, and operational requirements.
* Support cellular/networked communications technologies as required by the mission.
* Learn and adapt quickly to new systems and technologies under pressure, with minimal supervision.
* Support occasional travel as required.
** Basic Qualifications
*** Minimum of 15 years of experience in network engineering, including routing, switching, and network security in enterprise or mission‐critical environments.
* Significant hands‐on experience with Cisco networking and security technologies (routing, switching, firewalls, VPNs, IDS/IPS).
* Demonstrated, practical experience with Linux networking and Linux systems in an operational or production environment (beyond basic Linux system administration).
* Experience with tools/technologies such as KVM, Ansible, Bash, Python, VPN, and firewall configuration.
* Proven ability to design and document networked systems and architectures.
* Demonstrated ability to lead technical efforts and resolve complex network and infrastructure issues.
* Self‐starter capable of operating independently in small teams with limited ramp‐up time or mentoring resources.
* Active TS/SCI security clearance with polygraph.
** Preferred Qualifications
*** Prior CNO/TAO or similar offensive/defensive cyber operations experience.
* Experience with Cisco…