Senior Network Engineer (Gc-3)

Legato, LLC; Annapolis (MD); On-site; USD 200,000 - 235,000; Full time

Benefits offered by this job

Health, vision and dental

Paid time off

11 holidays per year

401(k) employer match

Referral benefits

Job summary

Legato, LLC is seeking a Senior Network Engineer to design, implement, and maintain complex enterprise networks at Fort Meade, MD. The role focuses on SDN, NSX integration, and hybrid-cloud solutions, with a 90–120 day discovery and documentation period.

The candidate will develop network diagrams, assess policies, and close gaps in ACLs, segmentation, and routing while supporting ongoing upgrades and performance optimization. TS/SCI w/ Poly is required.

Qualifications

• Ten years of professional experience providing Network Engineering support.
• Master's degree in Computer Science, Information Assurance, Information Security Systems Engineering or related.
• Bachelor's degree in Systems Engineering, Computer Science, Information Systems, Engineering Science, Engineering Management or related, plus 2 years of Network Engineering experience may substitute for master's.
• 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 with LAN, CAN, WAN administration, including network conversions, cutovers, and modernization.
• Experience with network policies, ACLs, segmentation, and routing.
• Experience analyzing system and network requirements and translating them into designs and implementation plans.
• Active IAT Level II / DoD 8570-compliant certification, such as Security+.

Responsibilities

• Design, implement, and maintain enterprise network infrastructure.
• Develop network diagrams and document configurations and connectivity.
• Support SDN architecture and VMware NSX environments.
• Collaborate with systems engineers and other teams to implement scalable, secure networks.

Skills

Network engineering

LAN/WAN/CAN

SDN

VMware NSX

Network diagrams

Technical documentation

ACLs & segmentation

IPsec/VPN

Security+

IAT Level II

Education

Master's degree in Computer Science/Info Assurance/IS Engineering

Bachelor's degree in Systems Engineering/CS/IS or related, plus 2 years exp

Tools

VMware NSX

Diagramming tools

Network monitoring tools

Job description

Legato, LLC recruiters ([e-mail]) would love to speak with you regarding the following position: Senior Network Engineer inFort Meade, MD.
Security Clearance Required : TS/SCI w/ Polygraph
Salary Range : $200,000-$235,000, depending on experience.
What You Will Do:

The Senior Network Engineer will support the design, implementation, administration, maintenance, and modernization of complex enterprise network infrastructure. This role focuses on network architecture, performance optimization, technical documentation, and the integration of advanced networking technologies, including Software-Defined Networking (SDN), VMware NSX, data center networking, and hybrid-cloud solutions.

The Senior Network Engineer will analyze existing network environments, develop detailed network diagrams, document current configurations and connectivity, and identify opportunities to improve network performance, security, and reliability. During the initial 90-120 days, the Engineer will focus primarily on network discovery, documentation, and assessment, including creating network diagrams, evaluating network policies, and identifying configuration gaps involving access control lists (ACLs), segmentation, and routing.

Following the initial 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 the development of hybrid-cloud architecture solutions. Responsibilities also include designing and optimizing LAN, CAN, and WAN environments, integrating network devices, supporting infrastructure upgrades, and troubleshooting complex connectivity and performance issues.

This individual will also collaborate with systems engineers, network administrators, and other technical teams to develop network designs, evaluate system requirements, and implement scalable infrastructure solutions. The position requires someone with strong network engineering experience, excellent technical documentation skills, and the ability to independently assess complex network environments while providing technical guidance to junior engineers.

Our minimum requirements for this role:

• - Ten (10) 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.
• - A Bachelor's degree in Systems Engineering, Computer Science, Information Systems, Engineering Science, Engineering Management, or a related discipline, combined with two (2) additional years of Network Engineering experience, may be substituted for a master's degree.
• - 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 with LAN, CAN, and WAN administration, 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 technical network solutions involving load balancing, VPNs, firewalls, GRE tunneling, IPsec, IP encryption, VoIP traffic shaping, and network address translation (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+.

Preferred Qualifications:

• - Experience with VMware NSX and software-defined data center networking.
• - Knowledge of Software-Defined Networking (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, with the ability to independently assess network environments and recommend effective technical solutions.

About Your New Company
Legato, LLC is a dynamic small business headquartered in Columbia, near Ft. Meade, MD. Our positions include Cyber, Software, Systems, Networking, Data Science and other complex engineering capabilities. We set ourselves apart by having employees in the top of their field and who enjoy working at Legato for its attention to its employees, aggressive compensation, and upward mobility possibilities.
We offer a generous benefits package including individual and family health, vision and dental benefits. A minimum of four (4) weeks of paid time off including a week of sick leave. Legato gives our employees 11 federal holidays off and a 401(k) employer match with no vesting schedule. There is an opportunity to earn referral benefits or bank hours if the contract allows.

Disclaimer: The salary range provided is an estimate based on current market conditions and may be adjusted based on factors such as experience, skills, and qualifications. The final salary offer will be determined after a thorough review of the candidate's background and alignment with the role. Please note that this range is subject to change and should be considered as a guideline rather than a definitive figure.

Legato LLC is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, protected veteran status, or disability status.