Sr. Network Engineer

Leidos is seeking a Sr. Network Engineer to support large-scale operations on a large, high-profile DOD contract. The I3TS program provides enterprise-wide IT support to enable DTRA’s Information Management & Technology Directorate (ITD) to consolidate, modernize, and continuously innovate the delivery of IT services and mission capabilities to DTRA’s internal and external mission partners operating in CONUS and OCONUS locations.   

The Sr. Network Engineer/Architect will support the current infrastructure and new, modernized updated and upgraded capabilities for DTRA.  This role will be responsible for tech requirements definition, feasibility studies, pilot projects and implementations plans, as well as diagnosing and troubleshooting outages, monitoring networks, infrastructure and systems, and proving proactive mitigation strategies.  

Primary Responsibilities:

• Lead and coordinate Tier I–III network operations engineering personnel to ensure network troubleshooting efforts are affectively build ti.  

• Oversee real-time monitoring of global enterprise networks using DoD-approved tools (e.g., SolarWinds, NetOps, Splunk, ACAS).  

• Develop and enforce operational procedures, incident response workflows, and escalation protocols.  

• Act as the senior technical point of contact for major outages, network events, or cybersecurity incidents.  

• Interface with mission partners, DISA, Joint Forces, and Combatant Commands on network status, issues, and operational impacts.  

• Ensure all network changes follow configuration management (CM) and DoD Change Advisory Board (CAB) procedures.  

• Prepare and deliver operational briefs, after-action reports (AARs), and executive summaries to senior leadership.  

• Develop and coordinate the network operations team that   

• Plan and design secure network solutions to consolidate connectivity services under an enterprise service.  

• Design secure wide area connectivity inclusive of underlay, overlay, and COI transport design that supports performance, quality of service, security, and mission requirements.    

• Provide secure access solutions leveraging wired and wireless technologies, integrating standards, use cases/scenarios, and develop associated implementation and transition plans.    

• Integrate capacity planning and scaling of network and security stack environments into the overall design of solutions.  

• Collect, investigate, and identify network optimization strategies and techniques to meet capacity and performance standards.    

• Identify legacy service paths (i.e. dataflow, firewall rulesets, and ACLs) and develop strategies and designs for the to-be enterprise service capability to meet requirements while balancing security, sustainability, and maintainability.  

• Support development of IP addressing schemes across IPv4 and IPv6 networks.  

• Work with information assurance teams to ensure compliance to DoD standards to assist with providing accreditation artifacts.  

• Coordinates with Customers, teammates, and users to maintain compliance with all security standards and maintain deployment schedules

Basic Qualifications:

• Minimum of a Bachelor’s degree in Science, Technology, Engineering and Math (preferred) with 12-15 years' experience or Master's degree with 10-13 years of experience (additional years of directly applicable experience may be accepted in lieu of a degree).  

• Require network certification which shall meet or exceed a CCNA (comparable vender certification accepted upon review).  

• Require active DoD IAT Level II (i.e. Security+) certification or equivalent prior to start.  

• Must possess an active DoD Top Secret at time of consideration.

• Experience documenting logical or physical designs using drawing tools (e.g. Visio, PowerPoint, Gliffy, Cameo, MagicDraw) to depict systems, subsystems, interfaces, components, and communications of I/T applications and infrastructure  

• Experienced and comfortable with conducting technical troubleshooting to resolve issues.  

• Experience conducting site surveys or analyzing data obtained from site surveys.  

• Experience creating or executing a migration plan to move circuits, network traffic, services, applications, or data between environments or to a commercial cloud provider. Alternatively, experience planning or executing a technology refresh or lifecycle refresh of an existing I/T system.  

• Must have broad exposure to common I/T infrastructure networking in the areas of LAN, WAN, TCP/UDP, IPSec, VPN, Proxies, Routing(L2/L3), and Firewalls.  

• Must have