Systems Engineer MID

Position Title: Mid-Level Systems Engineer / Site Reliability Engineer (SRE) - Network Engineering

Location: Norfolk, Virginia

Clearance Requirements: Active Secret Security Clearance; active DoD 8570 IAT Level II certification and active CCNA certification required by start date

Position 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.

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.

Additional work locations may be considered in Bremerton, Washington; Jacksonville, Florida; Honolulu, Hawaii; San Diego, California; or Washington, D.C., subject to SIPR access and space availability.

Key Responsibilities:

• 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.

Top Requirements:

• 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.

About Seneca Resources

At Seneca Resources, we are more than just a staffing and consulting firm, we are a trusted career partner. With offices across the U.S. and clients ranging from Fortune 500 companies to government organizations, we provide opportunities that help professionals grow their careers while making an impact.

When you work with Seneca, you're choosing a company that invests in your success, celebrates your achievements, and connects you to meaningful work with leading organizations nationwide. We take the time to understand your goals and match you with roles that align with your skills and career path. Our consultants and contractors enjoy competitive pay, comprehensive health, dental, and vision coverage, 401(k) retirement plans, and the support of a dedicated team who will advocate for you every step of the way.

Seneca Resources is proud to be an Equal Opportunity Employer, committed to fostering a diverse and inclusive workplace where all qualified individuals are encouraged to apply.