Network Engineer

All hired employees are expected to have experience with Microsoft Copilot and / or an approved equivalent AI solution. Description Data Systems Analysts, Inc. (DSA) is seeking a TS/SCI cleared Network Engineer to support the design, implementation, and sustainment of enterprise network systems in a secure environment. The Network Engineer will be responsible for ensuring the reliability, security, and performance of Cisco network infrastructure across routing, switching, and security platforms. The Engineer will collaborate with senior technical staff to architect and maintain enterprise network services, optimize performance, and modernize configurations through automation and documentation. This role involves hands on network administration, troubleshooting, and integration of new technologies to support evolving mission and enterprise objectives. This position is onsite in Charlottesville, VA. Responsibilities: Administer and maintain Cisco routers, switches, and firewalls across enterprise or mission networks. Design, configure, and support LAN/WAN infrastructure, ensuring availability and performance. Implement and monitor network security baselines, access control lists (ACLs), and device hardening per organizational policies. Manage and optimize routing and switching protocols (e.g., OSPF, BGP, EIGRP, STP, VLANs, QoS). Support IPsec, and remote access solutions across secure and hybrid environments. Collaborate with systems and cybersecurity teams to design and deploy new network capabilities and maintain compliance with RMF and DISA STIG standards. Troubleshoot and resolve network performance, latency, or connectivity issues methodically and efficiently. Monitor network performance using tools such as SolarWinds, Wireshark, or NetFlow and identify improvement opportunities. Document configurations, diagrams, and operational procedures to support continuity and audits. Participate in change control processes and maintain high standards of operational discipline and communication. Required Education, Certifications and Security Clearance BS degree in Engineering, Computer Science, or related field Experience may be substituted for degree. TS/SCI Clearance DoD 8140 (8570) IAT Level II Certification Requirements Experience/Qualifications: Minimum 4 years of experience in network engineering, administration, or infrastructure operations. Hands-on experience with Cisco routers, switches, and firewalls in enterprise environments. Strong understanding of routing and switching protocols (OSPF, BGP, EIGRP, VLANs, STP, QoS). Experience managing network security configurations (ACLs, VPNs, firewalls, IPsec tunnels). Proficiency with TCP/IP, DNS, DHCP, NAT, and subnetting. Ability to troubleshoot complex network issues using packet captures and monitoring tools. Strong documentation, communication, and analytical skills. Preferred Experience/Qualifications: Cisco CCNA or CCNP certification. Experience with Cisco ISE. Familiarity with network automation or Infrastructure as Code (Ansible, Python, Terraform). Exposure to cloud networking concepts (AWS VPC, Azure VNets, ExpressRoute, Direct Connect). Knowledge of DISA STIGs, RMF compliance, or DoD network security policies. Experience with monitoring and analysis tools such as SolarWinds, Wireshark, or NetFlow. Prior experience supporting mission, intelligence, or secure enterprise environments. #DSA209 #LI-KE1 Many of DSA's positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information. DSA is proud to be an Equal Opportunity Employer. DSA is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All qualified applicants will receive consideration for employment without regard to race, color, sex, sexual orientation, gender identity, religion, national origin, disability, veteran status, or other legally protected status. DSA requires background checks , where permitted , by law. DSA is an E-Verify Employer.