Senior Principal Network Engineer/Specialist

Concurrent Technologies Corporation•Linthicum, MD

1d•Onsite

About The Position

The Senior Principal Network Engineer/Specialist independently leads and delivers multiple highly complex network projects that are critical to the organization’s technical direction. The role applies leading-edge principles, theories, and concepts to solve challenging technical problems, develop innovative network engineering solutions, and advance industry knowledge. Recognized as a top expert in the field, the position contributes to functional strategic planning and may include department-level leadership and supervision. The position leads the design and implementation of enterprise-wide, mission-critical network architectures aligned with organizational and DoD requirements; sets long-term network strategy; and advises executive leadership on network decisions. It leads technical innovation, cybersecurity compliance and risk mitigation, large-scale projects, cross-functional teams, resources, budgets, and timelines. The role also represents the organization to government agencies and industry partners. Additional duties include maintaining network documentation and technical standards, preparing executive-level reports and presentations, mentoring senior engineers and technical staff, and leading training and knowledge-sharing initiatives. The work spans network infrastructure, virtualization and storage, Windows and Linux environments, security operations, and administration of collaboration and other enterprise applications. The role is full-time and onsite in Linthicum, Maryland, and requires a TS/SCI with FS Poly clearance.

Requirements

Master’s degree in Computer Science, Information Technology, or a related field.
12 or more years of relevant experience, or equivalent work experience.
Expert-level knowledge of networking concepts, including TCP/IP, DNS, VLANs, subnetting, and routing protocols such as OSPF, BGP, and EIGRP.
Extensive experience with network monitoring and troubleshooting tools such as SolarWinds and Wireshark.
Advanced understanding of cybersecurity principles and practices, including firewalls, intrusion prevention systems, and vulnerability management.
Previous military experience, civilian government experience, or experience supporting a government customer.
Strong communication skills, including eliciting technical requirements, explaining technical concepts to appropriate audiences, communicating forthrightly about technical challenges, and tailoring communication for remote end-user support and troubleshooting.
Demonstrated ability to work independently on network administration and support needs and execute tasks with limited direct oversight.
Ability to work as a member of a small team, contribute to planning and milestone setting, and provide perspective and analysis of alternatives.
Experience working in an Agile development context, including defining sprint goals, epics, and tasks.
Experience maintaining Ethernet networks and IPv4 addressing; configuring Cisco switches and routers; defining and routing IP VLANs; administering and tuning firewalls; administering RSA; and working with multiple VPN technologies.
Experience using PowerShell, Bash, Python, and scripting.
Experience establishing and administering virtualization using VMware (VxRail, vSphere, ESXi, vCenter), Microsoft Hyper-V, and Proxmox.
Experience administering storage services such as vSAN, TrueNAS, and Sonatype Nexus; ability to establish, document, and test backup and recovery plans.
Experience administering Windows domains and services, including Active Directory, DHCP, DNS, Kerberos, user accounts, and Group Policy.
Experience administering Windows workstation endpoints, including accounts, certificates, device encryption, patching and updates, SCCM, WSUS, and Remote Desktop.
Experience deploying, administering, and maintaining on-premises Microsoft Office productivity tools, endpoint applications, and tools.
Experience provisioning and administering on-premises SharePoint environments, Exchange services, and email clients.
Experience auditing, logging, and managing events in Windows environments.
Experience installing, configuring, hardening, operating, and supporting Red Hat Enterprise Linux (RHEL) 7, 8, 9, and 10 servers, including LEAPP.
Experience with Red Hat license management, Red Hat Satellite, and Ansible.
Experience building and maintaining software package repositories in closed network environments, such as yum/dnf repositories.
Ability to harden Linux-based systems and demonstrate or test hardening measures, including SELinux, fapolicyd, and SCAP.
Experience with network and information system security assessments, vulnerability management, and incident identification and response.
Experience using security tools including SIEMs such as Splunk, ELK, and Wazuh; Tenable Security Center; Nessus; OSCAP; Satellite; Microsoft Defender Antivirus; and ClamAV.
Ability to operate effectively in out-of-band, non-internet-connected network environments.
Required clearance: TS/SCI with FS Poly.

Nice To Haves

Experience with Veeam.
Certifications such as CCIE, CISSP, or equivalent.
Extensive experience with DoD network environments, protocols, and compliance standards such as NIST 800-171 and RMF.
Expertise in advanced networking technologies such as SD-WAN, VPNs, cloud-based networking solutions, and zero-trust architectures.
Proficiency in network management automation tools and scripting, such as Python and Ansible.
Demonstrated ability to lead department-level projects and interface with senior stakeholders, including government agencies and industry partners.

Responsibilities

Lead the design, development, and implementation of enterprise-wide, mission-critical network architectures that meet organizational and DoD requirements.
Define and drive long-term network strategy aligned with business objectives and emerging technologies.
Identify and integrate new technologies to advance network engineering capabilities.
Solve complex technical problems and develop innovative network engineering and cybersecurity solutions.
Advise executive leadership on network-related decisions and strategies.
Ensure network systems comply with DoD cybersecurity standards, including NIST 800-171 and RMF, and other applicable regulations.
Lead development and implementation of security measures, including zero-trust architectures, intrusion prevention systems, and encryption protocols.
Oversee risk assessments and develop mitigation strategies to address vulnerabilities and support operational resilience.
Lead cross-functional teams delivering multiple large-scale projects; manage department-level resources, budgets, and timelines in alignment with organizational priorities and customer expectations.
Represent the organization to government agencies and industry partners on high-profile network initiatives.
Develop and maintain documentation of network designs, configurations, and processes.
Prepare executive-level reports and presentations on network performance, project outcomes, and strategic initiatives.
Establish and enforce technical standards and best practices for network operations and security.
Mentor senior engineers and technical staff, and lead training, workshops, and knowledge-sharing initiatives.
Contribute to organizational policies and procedures that improve operational efficiency and effectiveness.
Administer and support network infrastructure, including Ethernet, IPv4, Cisco switches and routers, VLANs, firewalls, RSA, and VPN technologies.
Establish and administer virtualization and storage services, and document and test backup and recovery plans.
Administer Windows domains, network services, workstation endpoints, on-premises Microsoft Office, SharePoint, and Exchange environments.
Install, configure, harden, operate, and support RHEL servers and Linux software repositories in closed network environments.
Conduct network and information system security assessments and vulnerability management; identify and respond to incidents.
Administer and maintain specified applications and services, and track and manage software and system licenses.
Independently define, plan, and execute tasks with limited oversight; contribute to small-team planning, milestone setting, and analysis of alternatives.
Work within an Agile development context, including defining sprint goals, epics, and tasks.