Tier 3 Subject Matter Expert (SME): Network

NSS is seeking an experienced Subject Matter Expert (SME) to provide Tier 3 sustainment support to a mission critical IP voice transport network in Fort Meade, MD.

The position requires extensive experience designing, implementing, and maintaining complex networks with a focus on security, high availability, and performance.

The SME will work closely with operations, management, and customer stakeholders to ensure the network is both secure and functioning optimally.

Primary Responsibilities :

Provide design, implementation, testing, and maintenance support for a complex enterprise network using industry best practices.

Resolve escalated network and security support issues.

Independently conduct network assessments, identify possible vulnerabilities, and recommend / develop solutions to problems found.

Lead development of network documentation, diagrams, and standard operating procedures. This includes creating and maintaining Engineering Implementation Plans (EIPs).

Support Continuous Service Improvements (CSI).

Active participation in Root Cause Analysis for Problem Management activities.

Work with cross-functional teams to plan and execute network upgrades, migrations, and deployments.

Manage vendor relationships, including engagement on Incident Support activities and ensure timely delivery of program deliverables.

Monitoring, capacity planning, backup, and recovery of network equipment

Keep up with technology trends. Evaluate and recommend new technologies, tactics, and tools to improve service delivery.

Mentor and coach junior engineers, including providing training and support as required.

Core Qualifications :

Bachelor’s degree and 8 12 years of prior relevant experience or Masters with 6 10 years of prior relevant experience. Specific years of related work experience may be substituted for a degree at the Hiring Manager's discretion.

Ability to work in a team environment with excellent communications and interpersonal skills.

Active DoD clearance at the Top-Secret level with SCI eligibility

Security+ Certification or other DOD 8570 IAT Lvl II Certification within a certain timeframe after starting if not starting with one when hired.

Extensive knowledge of defense-in-depth principles, Network and Security architecture, network topology, IT device integrity, and common security elements.

10+ years’ experience engineering and troubleshooting networks, including extensive routing and switching experience such as one or more of the following : MPLS, VPNs, routing protocols i.

e. BGP, OSPF, IS-IS, switching protocols i.e. Spanning Tree Protocol, VLANs, LLDP, VoIP, Multicast protocols and emerging network technologies.

Strong understanding and in-depth knowledge of IP network / subnet addressing.

Experienced and adept at developing and maintaining technical documents, analyses, and reports.

Experience developing and presenting technical information to senior customer management, customer stakeholders, and company management.

Ability to travel up to 10% including OCONUS potential travel.

Preferred Qualifications :

Experience with Juniper route, switch and security appliances. (MX, EX, SRX)

Experience with Session Initiation Protocol (SIP) implementation and design concepts.

Experience with Ribbon Session Border Controllers (SBC)

Experience with SolarWinds configuration and maintenance.

Experience with change, configuration and performance management NetOps concepts.

IAT Level III Certification (i.e. CISSP or equivalent).