Senior Network Engineer (Gc-3)

Legato•Annapolis Junction, MD

12d

About The Position

The Senior Network Engineer will support the design, implementation, administration, maintenance, and modernization of complex enterprise network infrastructure. The role focuses on network architecture, performance optimization, technical documentation, and integration of advanced networking technologies, including Software-Defined Networking (SDN), VMware NSX, data center networking, and hybrid-cloud solutions. During the initial 90–120 days, the Engineer will focus primarily on network discovery, documentation, and assessment. This includes creating network diagrams, evaluating network policies, and identifying configuration gaps involving access control lists (ACLs), segmentation, and routing. After this assessment period, the Engineer will support SDN architecture and implementation, provide engineering support for VMware NSX environments, assist with storage and backup infrastructure, and contribute to hybrid-cloud architecture solutions. The position also involves designing and optimizing LAN, CAN, and WAN environments; integrating network devices; supporting infrastructure upgrades; troubleshooting complex connectivity and performance issues; and collaborating with systems engineers, network administrators, and other technical teams. The Engineer will independently assess complex network environments, produce strong technical documentation, and provide technical guidance to junior engineers.

Requirements

Ten years of relevant professional experience providing Network Engineering support.
Master's degree in Computer Science, Information Assurance, Information Security Systems Engineering, or a related technical discipline; alternatively, a bachelor's degree in Systems Engineering, Computer Science, Information Systems, Engineering Science, Engineering Management, or a related discipline plus two additional years of Network Engineering experience.
Strong experience developing and maintaining detailed network diagrams, technical documentation, network configurations, and architecture documentation.
Experience designing, implementing, administering, maintaining, and upgrading enterprise network infrastructure.
Experience administering LAN, CAN, and WAN environments, including network conversions, cutovers, and infrastructure modernization.
Experience with network policies, access control lists (ACLs), network segmentation, and routing.
Experience analyzing network configurations, identifying technical gaps, and recommending improvements to network security and performance.
Experience configuring, integrating, deploying, testing, and maintaining network devices and supporting infrastructure.
Experience optimizing end-to-end network performance, minimizing latency, and maximizing data throughput.
Experience performing network data captures, analyzing performance metrics, and troubleshooting complex network issues.
Experience configuring and optimizing network connectivity between front-end and back-end systems.
Experience developing network solutions involving load balancing, VPNs, firewalls, GRE tunneling, IPsec, IP encryption, VoIP traffic shaping, and NAT.
Experience analyzing system and network requirements and translating them into technical designs and implementation plans.
Experience using network monitoring, diagnostic, and troubleshooting tools.
Experience providing technical guidance to junior Network Engineers and coordinating network engineering activities.
Active IAT Level II / DoD 8570-compliant certification, such as Security+.
Security clearance: TS/SCI with Polygraph.

Nice To Haves

Experience with VMware NSX and software-defined data center networking.
Knowledge of SDN architecture, technologies, and implementation.
Experience with data center networking, virtualization, and network infrastructure modernization.
Familiarity with storage systems, backup technologies, and supporting infrastructure.
Experience with hybrid-cloud architecture, cloud networking, and infrastructure integration.
Experience evaluating existing network environments and developing network modernization recommendations.
Experience supporting large-scale enterprise network architectures and infrastructure upgrades.
Strong technical documentation skills, including proficiency with network diagramming tools.
Experience developing network architecture solutions that support scalability, security, and operational efficiency.
Strong analytical and problem-solving skills, including the ability to independently assess network environments and recommend effective technical solutions.

Responsibilities

Design, implement, administer, maintain, and modernize complex enterprise network infrastructure.
Develop and maintain detailed network diagrams, technical documentation, network configurations, and architecture documentation.
Conduct network discovery, documentation, and assessment, including evaluating network policies and identifying configuration gaps in ACLs, segmentation, and routing.
Support SDN architecture and implementation and provide engineering support for VMware NSX environments.
Assist with storage and backup infrastructure and contribute to hybrid-cloud architecture solutions.
Design and optimize LAN, CAN, and WAN environments, including network conversions, cutovers, and infrastructure modernization.
Configure, integrate, deploy, test, maintain, and upgrade network devices and supporting infrastructure.
Analyze network configurations, identify technical gaps, and recommend improvements to network security and performance.
Optimize end-to-end network performance, minimize latency, and maximize data throughput.
Perform network data captures, analyze performance metrics, and troubleshoot complex network issues.
Configure and optimize network connectivity between front-end and back-end systems.
Develop technical network solutions involving load balancing, VPNs, firewalls, GRE tunneling, IPsec, IP encryption, VoIP traffic shaping, and NAT.
Analyze system and network requirements and translate them into technical designs and implementation plans.
Use network monitoring, diagnostic, and troubleshooting tools.
Collaborate with systems engineers, network administrators, and other technical teams to develop designs, evaluate requirements, and implement scalable infrastructure solutions.
Provide technical guidance to junior Network Engineers and coordinate network engineering activities.