Sr. Core Network Engineer

Leidos Holding$92K — $166K *
Telecommunications & Hardware
15+ years of experience
Job Overview by Ladders

Qualifications

  • TS/SCI clearance with Poly required
  • 16 years of experience through education or work history
  • Doctorate plus 8 years, Master's plus 10 years, Bachelor's plus 12 years, Associate's plus 14 years, or HS diploma plus 16 years
  • DoD 8140 IAT Level 2 compliance needed

Responsibilities

  • Oversee the architecture of the MPLS WAN
  • Develop MPLS WAN services solutions
  • Evaluate, integrate, and test lab equipment
  • Assist with security accreditation processes
  • Create and maintain technical documentation
  • Support Tier-4 production troubleshooting as needed
  • Develop proactive network analysis solutions for the operations team

Benefits

  • Opportunity to work with government customers
  • Engagement in mission-focused operational enterprises
  • Hands-on experience with advanced network components
  • Involvement in comprehensive security accreditation practices
  • Potential for professional development and skill enhancement
Full Job Description
Leidos has an opening for Sr. CORE Network Engineer to support our government customers' global enterprise networks. Network Architecture provides solutions for modernizing the network components while supporting service delivery for customer requirements in a mission-focused operational enterprise. Additionally, the candidate must have experience with hands-on router engineering and/or operation.

  • Responsibility for the Multiprotocol Label Switching (MPLS) Wide Area Network (WAN) overall architecture
  • Developing MPLS WAN services solution
  • Performing lab equipment evaluation, integration, and testing
  • Assisting with the security accreditation process
  • Developing and maintaining relevant technical documentation.
  • On as-needed basis, the engineer will also be responsible for supporting Tier-4 production troubleshooting and developing pro-active network analysis solution for the operations team.


Basic Requirements
  • Required Clearance: TS/SCI with Poly
  • Candidate must have 16 years of experience that can be a combination of work history and education. This equates to a Doctorate and 8 years, master's and 10 years, bachelor's and 12 years, associates and 14 years or HS diploma and 16 years.
  • Must be compliant with DoD 8140 Information Assurance Technical (IAT) Level 2.

Original Posting:
July 21, 2026

Pay Range:
Pay Range $92,300.00 - $166,850.00

The Leidos pay range for this job level is a general guideline only and 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.

Explore Career Opportunities

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.

Innovation and Professional Growth

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.

Commitment to Diversity and Inclusion

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.

Internship Programs

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.

Benefits and Culture

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.

Join the Team

Leidos Holding is hiring! Explore job opportunities that match your skills and interests. Leidos Holding looks for driven, curious, and innovative individuals to join their team. Positions are available across various disciplines and experience levels.

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Prepare for Your Interview

To prepare for an interview at Leidos Holding, candidates should familiarize themselves with the company's missions and values, update their resumes, and be ready to discuss how their background and skills align with the position they are applying for.

Networking and Career Advancement

Leidos Holding encourages its employees to engage in networking within the company to discover new opportunities for career advancement. The leadership team at Leidos Holding is dedicated to supporting employees in their career paths with ample opportunities for networking and growth.

Explore Leidos Holding Jobs and Careers

Discover the exciting career opportunities at Leidos Holding today. With a commitment to employee growth, innovation, and diversity, Leidos Holding is the perfect place to advance your career. Check out the latest job listings and find your perfect fit at Leidos Holding.

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