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Senior Network Engineer

Leidos

Senior Network Engineer

Leidos

Springfield, VA

·

On-site

·

Full-time

·

5d ago

Seeking an experienced Senior Network Engineer specializing in network systems to support mission-critical projects in a secure environment. The ideal candidate will have extensive experience in designing, implementing, and maintaining complex network infrastructures, and must hold an active TS/SCI clearance with Polygraph.

Key Responsibilities:

  • Design, deploy, and optimize secure network architectures for enterprise and classified environments.
  • Lead system performance tuning, troubleshooting, and disaster recovery planning.
  • Ensure compliance with security standards and protocols (DISA STIGs, RMF).
  • Collaborate with cross-functional teams to deliver high-availability solutions.
  • Automate system administration tasks using scripting (PowerShell, Bash).
  • Manage Active Directory, virtualization platforms (VMware, Hyper-V), and network monitoring tools.

Required Qualifications:

  • Active TS/SCI clearance with Polygraph.
  • Bachelor’s degree in information technology, Computer Science, or related field, or equivalent experience or specialist certifications considered in lieu of degree.
  • 8+ years of experience in systems engineering with a focus on network systems.
  • Expertise in Windows/Linux server administration, virtualization, and network security.
  • Certifications such as CompTIA Security+, VMware, or equivalent.

Preferred Skills:

  • Experience supporting DoD or Intelligence Community environments.
  • Strong background in system hardening, vulnerability remediation, and compliance.
  • Excellent communication and technical documentation skills.

EC-DAS

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 20, 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 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.

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About Leidos

Leidos

Leidos

Public

Leidos Holdings, Inc. is an American defense, aviation, information technology, and biomedical research company headquartered in Reston, Virginia, that provides scientific, engineering, systems integration, and technical services.

10,001+

Employees

Reston

Headquarters

$14.2B

Valuation

Reviews

3.7

9 reviews

Work-life balance

2.8

Compensation

2.5

Culture

3.8

Career

2.9

Management

3.2

68%

Recommend to a friend

Pros

Flexible work arrangements and hours

Supportive management and colleagues

Excellent health benefits

Cons

Limited career advancement opportunities

Poor work-life balance and high workload

Uncompetitive salary and pay

Salary Ranges

27 data points

Junior/L3

Junior/L3 · Energy Market Analyst

1 reports

$112,700

total per year

Base

$98,000

Stock

-

Bonus

-

$112,700

$112,700

Interview experience

3 interviews

Difficulty

3.0

/ 5

Duration

14-28 weeks

Offer rate

67%

Experience

Positive 67%

Neutral 0%

Negative 33%

Interview process

1

Application Review

2

Recruiter Screen

3

Technical Phone Screen

4

Hiring Manager Interview

5

Team Interview

6

Offer

Common questions

Technical Knowledge

Behavioral/STAR

Past Experience

Security Clearance

Government Contract Experience