Senior Network Engineer

Leidos Holding$107K — $195K *
US-AnywhereRemote in United States
Aerospace & Defense
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's or Master's degree in Computer Science, IT, Engineering, or related field with significant experience.
  • Active NATO Secret clearance (or higher).
  • Expertise in enterprise routing, switching, and Software-Defined Networking (SDN).
  • Strong familiarity with Cisco technologies, particularly Cisco ACI.
  • Experience with VMware NSX or equivalent virtualization technologies.
  • Proven ability to implement network automation using Infrastructure as Code (IaC).
  • Comprehensive understanding of secure network architecture principles.

Responsibilities

  • Lead the design and integration of enterprise network solutions for private cloud SDDC modernization.
  • Implement automated Layer 2/Layer 3 architectures for VMware-based environments.
  • Develop and integrate SDN solutions with Cisco ACI and VMware NSX.
  • Design secure network architectures for various enterprise services.
  • Collaborate with DevOps and cybersecurity teams for network capability integration.
  • Create network automation solutions using modern technologies like Ansible and Terraform.
  • Travel to NATO sites for deployment and validation of networking solutions.

Benefits

  • Opportunity to work in an international environment with NATO partners.
  • Chance to influence mission-critical cloud capabilities.
  • Access to a dynamic, high-impact program.
  • Professional growth through mentorship and collaboration.
  • Engagement in Agile development practices and technical governance.
Full Job Description

Join the Leidos Homeland Sector and contribute to a high-impact international program delivering secure, next-generation private cloud capabilities within a NATO-secured environment. This senior-level role offers the opportunity to apply deep technical expertise to the design, integration, and hands-on implementation of enterprise networking solutions supporting a Software-Defined Data Center (SDDC).

You will help deliver secure, resilient, and automated network infrastructure across Enterprise Core Services (ECS), Client Provisioning Services (CPS), Infrastructure as a Service (IaaS), and Service Management Control (SMC). Working closely with infrastructure, virtualization, cybersecurity, and DevOps teams, you will support the full delivery lifecycle—from solution design and integration through site deployment, testing, and customer acceptance.

This position offers an exciting opportunity to work directly with international customers and technical partners, with approximately 25% travel to The Hague, Netherlands, and other NATO locations as needed to support solution integration, implementation, testing, and customer acceptance. It is an ideal opportunity for a senior engineering leader interested in advancing mission-critical cloud capabilities while gaining valuable international program experience.

Responsibilities:

  • Lead the design, integration, and hands-on implementation of enterprise network solutions supporting private cloud SDDC modernization initiatives.

  • Design and implement automated deployment of Layer 2/Layer 3 enterprise network architectures supporting VMware-based private cloud environments.

  • Develop and integrate Software-Defined Networking (SDN) solutions using Cisco ACI, VMware NSX, and ancillary datacenter technologies.

  • Design secure network architectures supporting Enterprise Core Services (ECS), Client Provisioning Services (CPS), Infrastructure as a Service (IaaS), DevOps platforms, and Service Management Control (SMC).

  • Collaborate with infrastructure, virtualization, cybersecurity, and DevOps engineering teams to integrate enterprise networking capabilities.

  • Develop network automation solutions using Infrastructure as Code (IaC), Ansible, Python, Terraform, or similar automation technologies.

  • Integrate Commercial Off-The-Shelf (COTS) networking solutions into secure enterprise environments.

  • Develop and maintain network architectures, engineering designs, implementation plans, technical procedures, and configuration documentation.

  • Participate in Agile development activities including sprint planning, technical reviews, design governance, and cross-functional engineering collaboration.

  • Mentor engineers and provide technical guidance on enterprise networking standards, automation practices, and secure network design.

  • Travel to NATO sites to install, configure, integrate, test, and validate enterprise networking solutions, supporting deployment, commissioning, troubleshooting, and customer acceptance activities.

  • Support infrastructure modernization initiatives, technical planning, and proposal development activities.

Required Experience, Skills, and Education:

  • Bachelor's degree in Computer Science, Information Technology, Engineering, or related discipline with 8–12 years of relevant experience, or Master's degree with 6–10 years of relevant experience.

  • Active NATO Secret clearance (or higher).

  • Demonstrated experience designing and implementing enterprise routing, switching, and Software-Defined Networking (SDN) solutions.

  • Strong experience with Cisco enterprise networking technologies, including Cisco ACI.

  • Experience with VMware NSX or equivalent network virtualization technologies.

  • Experience designing and integrating enterprise network solutions supporting private cloud or hybrid cloud environments.

  • Extensive experience implementing network automation using Infrastructure as Code (IaC), Ansible, Terraform, Python, or similar technologies.

  • Strong understanding of enterprise networking, network segmentation, routing protocols, switching, load balancing, DNS, and IP services.

  • Strong understanding of secure network architecture, Zero Trust principles, and enterprise cybersecurity practices.

  • Experience operating within Agile, SAFe, or DevSecOps delivery frameworks.

  • Strong leadership, communication, stakeholder engagement, and technical collaboration skills.

  • Experience supporting defense, government, or highly regulated development environments.

Preferred Experience, Skills, and Education:

  • Cisco Certified Network Professional (CCNP), Cisco Certified Internetwork Expert (CCIE), or equivalent certification.

  • VMware NSX certification or equivalent SDN certification.

  • Experience supporting NATO environments and compliance frameworks.

  • Experience with F5 load balancing technologies.

  • Experience with enterprise network monitoring, automation, and orchestration platforms.

  • Familiarity with Python, REST APIs, and network programmability.

  • Experience supporting large-scale infrastructure modernization and enterprise platform engineering initiatives.



Original Posting:
August 10, 2026

For 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.

Pay Range:
Pay Range $107,900.00 - $195,050.00

The Leidos pay range for this job level is a general guideline onlyand not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

About Leidos Holding

Leidos Holding Careers

Joining Leidos Holding presents an unparalleled opportunity to advance one's career with a leader in innovation and technology. The company offers a plethora of job opportunities aimed at fostering professional growth and development in a diverse and inclusive environment.

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Leidos Holding is actively seeking skilled professionals who are passionate about leveraging their expertise to drive innovation and leadership in their fields. With a variety of open positions, Leidos Holding provides a platform for individuals to challenge themselves in a dynamic work environment.

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At Leidos Holding, innovation is at the core of everything they do. Employees are encouraged to think creatively and push boundaries. The company supports this drive for innovation through comprehensive professional development and diversity training programs that are designed to enhance skills and foster leadership.

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Leidos Holding is committed to creating a workplace where diversity is not only recognized but celebrated. With a culture that values and promotes diversity, Leidos Holding ensures that all team members have the opportunity to contribute, learn, and grow.

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For those starting their career, Leidos Holding offers internship programs that provide a robust foundation in the industry. Internships are a great way to develop essential skills, gain valuable work experience, and build professional networks.

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Employees at Leidos Holding enjoy a range of benefits designed to support their professional and personal lives. The company culture is built on a foundation of respect and integrity, providing a supportive and collaborative environment where every team member is valued.

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