Network Infrastructure Engineer

Network Infrastructure Engineer (SME)

Location: Clinton, MS (100% Onsite)

Client: Mississippi Department of Revenue (DOR)

Duration: Through March 31, 2027

Start Date: ASAP


Position Overview


The Mississippi Department of Revenue is seeking an experienced Network Infrastructure Engineer to support, design, and enhance its enterprise networking environment. This senior-level position will play a critical role in deploying and managing next-generation data center, campus, security, and observability solutions while supporting statewide modernization initiatives.


The ideal candidate will possess deep expertise in Cisco networking technologies, software-defined networking, identity-based access control, network security, and enterprise infrastructure architecture.

Key Responsibilities

Data Center & Cisco ACI
• Design, implement, and support Cisco Nexus environments operating in ACI mode.
• Configure and maintain ACI components including VRFs, Bridge Domains, EPGs, ESGs, L3Outs, contracts, and fabric policies.
• Integrate ACI with virtualization and container platforms such as OpenShift and Cilium.
• Troubleshoot ACI fabric health, segmentation, endpoint learning, and policy-related issues.
• Develop technical documentation, standards, and operational procedures.

Software-Defined Networking
• Deploy and support Cisco Catalyst platforms and Software-Defined Access (SDA) environments.
• Manage SDA wired and wireless fabrics, underlay and overlay networks, policy enforcement, and authentication integrations.
• Collaborate with infrastructure teams to optimize network performance and reliability.

Identity & Security
• Administer Cisco Identity Services Engine (ISE), including TACACS+, authentication, authorization, endpoint profiling, and policy management.
• Support Zero Trust initiatives through identity-based segmentation and access control.
• Design and implement Palo Alto Network security solutions across enterprise environments.

Monitoring & Observability
• Support and maintain Cisco ThousandEyes, Cyber Vision, and DNA Spaces platforms.
• Provide visibility into network performance, user experience, device behavior, and operational analytics.
• Generate actionable insights and reporting for leadership and technical teams.

Core Network Engineering
• Troubleshoot complex Layer 2 and Layer 3 networking issues.
• Support routing and switching technologies including OSPF, BGP, VLANs, STP, multicast, and QoS.
• Create and maintain architecture diagrams, standards, runbooks, and asset inventories.
• Participate in infrastructure upgrades, modernization projects, and technology planning initiatives.

Required Qualifications
• Minimum 15 years of Cisco networking experience.
• Hands-on experience with Cisco ACI in enterprise production environments.
• Strong understanding of ACI architecture, including VRFs, Bridge Domains, EPGs, ESGs, L3Outs, and contracts.
• Experience with Cisco Catalyst switching platforms and Software-Defined Access (SDA).
• Expertise administering Cisco ISE, TACACS+, NAC, and policy-based access control.
• Experience with Palo Alto Networks security solutions.
• Strong knowledge of TCP/IP, routing, switching, QoS, and network security principles.
• Ability to create technical documentation, network diagrams, and architecture designs.
• Excellent troubleshooting, analytical, and communication skills.

Preferred Qualifications
• CCNP Enterprise, CCNP Data Center, CCIE, or equivalent experience.
• Experience with OpenShift, container networking, and virtualization integrations.
• Knowledge of Python, Ansible, REST APIs, or network automation tools.
• Familiarity with NIST cybersecurity frameworks.
• Prior experience supporting state government or large enterprise environments.
• Palo Alto certifications such as PCCSA or PCNSA.