Senior Network EngineerLeidos
Description
Leidos is seeking a highly organized and detail-oriented Senior Network Architect / Administrator to support the HUD IOO O&M program in Washington, DC. This role combines advanced network architecture design with hands-on implementation and operational support.
The ideal candidate will provide senior-level leadership in designing, implementing, and optimizing complex enterprise network environments while supporting operations and engineering teams. This position requires a forward-thinking professional who can evaluate emerging technologies and drive architectural improvements in a secure federal environment.
At Leidos, we know the most talented and diverse IT and Engineering professionals will always have a multitude of career choices; your time at Leidos will be a wise investment in your career and in yourself.
Primary Responsibilities
- Lead network architecture implementation across LAN/WAN, data center, and cloud environments
- Provide MPLS and SD-WAN network design, support, and technology implementation
- Architect and manage data center infrastructure solutions
- Design and implement Cisco Application Centric Infrastructure (ACI)
- Implement device authentication and network access control strategies using Cisco Identity Services Engine
- Architect and manage network security using:
- Cisco Firepower Management Center
- Cisco 3105 Firewalls (Active/Passive high availability clusters)
- Design secure access for enterprise applications, including Cloud and on premise based applications:
- Outlook, SharePoint, OneDrive, Teams
- Implementation of new network configuration on existing Zero Trust architecture leveraging Zscaler:
- Zscaler Internet Access (ZIA)
- Zscaler Private Access (ZPA)
- Zscaler Digital Experience (ZDX)
- Implement and mitigate security controls / finding:
- Block malicious IPs and URLs
- Mitigate vulnerabilities across network borders
- Integrate Zscaler with Cisco edge and border devices
- Address ServiceNow incidents, implement change orders
- Architect and manage secure VPN solutions (Cisco ASA) for business partners
- Provide technical leadership, mentoring, and strategic recommendations
Basic Qualifications
- Bachelor's degree with 8-12 years of relevant experience or Master's degree with 6-10 years of experience
- Strong experience in network architecture design and implementation
- Deep expertise in networking technologies (routing, switching, security, firewall, load balancers, VPN, NAC, and data center fabrics)
- Experience with enterprise security architecture and Zero Trust frameworks
- Experience supporting federal or large enterprise environments
- Strong analytical, troubleshooting, and leadership skills
- Advanced network troubleshooting skills.
- Excellent customer service skills.
- Excellent oral and written communication skills.
- Strong leadership skills.
- Ability to collaborate effectively across multiple teams/functions.
- Ability to work independently with a sense of urgency.
Clearance Requirements
- Must be able to obtain and maintain a Public Trust security clearance.
- United States Citizenship is required.
Preferred Qualifications
- Cisco Certified network Associate
- Cisco Certified Network Professional (Enterprise, Security)
- Ability to think critically about processes and make recommendations for improvement.
- Strong collaboration, prioritization, and adaptability skills.
- Ability to effectively communicate with all organizational levels.
If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.
Original Posting:
April 15, 2026For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
