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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Systems Engineer MID - **Company:** Seneca Resources - **Location:** Norfolk, VA, United States - **Experience:** Experienced - **Contract:** Permanent contract - **Skills:** Microsoft Access, Link Aggregation (Ethernet), Access Control List, Amazon Web Services, Apple IOS, Systems Engineering, Microsoft Azure, Bash Shell, Border Gateway Protocol, Spanning Tree Protocols, Cisco IOS, Cisco Routers, Command-Line Interface, Configuration Management, Computer Networks, System Configuration, Enhanced Interior Gateway Routing Protocol, EtherChannel, Trunking, IPv4, Subnetting, Python (Programming Language), Network Layer, Network Configuration and Change Management, Network Information Services, Network Interface, Routing, Open Shortest Path First (OSPF), OpenShift, Windows PowerShell, Reliability Engineering, Ansible, Transmission Control Protocol (TCP), Virtual Local Area Networks, Dynamic Routing, Scripting, VLAN Trunking Protocol (VTP), Computer Networking Systems, Gitlab, Cloudformation, Kubernetes, Atlassian Tools, Puppet, Terraform, Open Network Automation Platform, Cisco Switches, Cisco, Docker, Jenkins, Programming Languages - **Published:** November 11, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9307211/systems-engineer-mid ## About the Role Clearance Requirements: Active Secret Security Clearance; active DoD 8570 IAT Level II certification and active CCNA certification required by start date, The successful candidate will apply established engineering standards, configuration baselines, and network solutions to customer- and site-specific requirements. This position requires strong networking fundamentals, analytical problem-solving skills, and the ability to understand the technical impact of configuration commands rather than relying solely on template substitution., * Mid-level experience in systems engineering, site reliability engineering, network engineering, or enterprise network configuration. * Strong working knowledge of Cisco enterprise networking and Cisco IOS/IOS-XE. * Expertise with Cisco Layer 2 and Layer 3 switching, including: + VLAN configuration and assignment + 802.1Q trunking and native VLAN concepts + VLAN Trunking Protocol (VTP) + Spanning Tree Protocol, including STP, RSTP, and MST + EtherChannel, including LACP and PAgP + Access and trunk port configuration + Inter-VLAN routing * Strong understanding of IPv4 addressing, subnetting, TCP/IP networking, static routing, and dynamic routing. * Experience with OSPF, EIGRP, BGP, route advertisement, and route selection concepts. * Knowledge of Access Control Lists (ACLs), first-hop redundancy, network interfaces, and port-channel configuration. * Ability to understand configuration commands, dependencies, and network impact across varied environments. * Experience developing, validating, documenting, and peer-reviewing network configurations. * Active Secret Security Clearance. * Active DoD 8570 IAT Level II certification by the start date. * Active CCNA certification by the start date. Preferred Qualifications: * Experience supporting the NGEN-NMCI program. * Experience configuring or supporting Cisco Catalyst switches and Cisco routers. * Experience working in large, complex enterprise network environments. * Experience with standardized or template-based network configuration development. * Experience with network automation, scripting, or programming languages such as Python, Bash, or PowerShell. * Familiarity with CI/CD tools and practices, including Jenkins, GitLab, or similar platforms. * Experience with automation, configuration management, or Infrastructure as Code technologies such as Ansible, Terraform, CloudFormation, Chef, or Puppet. * Familiarity with Docker, Kubernetes, Red Hat OpenShift, or other containerization and orchestration technologies. * Experience working in Linux/Unix environments and using command-line tools. * Experience with AWS, Azure, or other commercial cloud environments. * Experience with application administration, configuration, or integration. * Familiarity with Atlassian or Azure DevOps products and related workflows. ## Description Seneca Resources is seeking a Mid-Level Systems Engineer / Site Reliability Engineer (SRE) to support the reliability, performance, and operational integrity of a complex enterprise network environment. This role will develop accurate, implementation-ready network configuration solutions for enterprise WAN and BAN environments, with a strong focus on Cisco Layer 2 and Layer 3 networking., * Develop implementation-ready network configurations for complex enterprise WAN and BAN environments. * Apply engineering standards, technical solutions, and configuration baselines to site-specific network requirements. * Review and correlate existing and proposed network information to determine accurate configuration requirements. * Develop and modify Cisco Layer 2 and Layer 3 configurations. * Configure and support VLANs, trunking, routing, switching, interfaces, security controls, and network redundancy solutions. * Interpret network addressing, routing, switching, interface, security, and resiliency requirements. * Create and maintain technical documentation representing existing and proposed network environments. * Validate configuration deliverables for accuracy, completeness, consistency, and technical viability. * Participate in technical reviews, peer reviews, change management, and implementation-readiness assessments. * Collaborate with SRE, network engineering, development, automation, and other technical teams. * Contribute to network standardization, optimization, reliability, automation, and continuous improvement initiatives. * Support the development of automated network capabilities and processes in partnership with automation and development teams. * Adapt to evolving network platforms, configuration templates, engineering standards, and customer requirements.