Senior Network Engineer

Job ID: 113540
Location:   [On-Site]
Category: Infrastructure
Employment Type: Contract
Date Added: 09/11/2026
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Role Summary
This position involves leading enterprise network modernization initiatives within a government and defense environment. The role requires a seasoned Network Engineer responsible for designing, deploying, and optimizing secure and scalable wired and wireless network solutions. The incumbent will provide technical leadership in migrating and upgrading complex base area networks, ensuring operational excellence and security compliance across multiple sites.

Responsibilities

  • Lead planning, design, deployment, and optimization of enterprise network modernization projects.
  • Develop and implement secure, scalable, and high-availability wired and wireless network architectures.
  • Support network modernization efforts across campus, data centers, WAN, and remote sites.
  • Create and maintain detailed network design documentation, implementation plans, and technical artifacts.
  • Conduct network assessments, gap analyses, and evaluate existing infrastructure to recommend improvements.
  • Engineer routing, switching, security, and related network services solutions for modernization initiatives.
  • Perform network migration, cutover activities, and troubleshoot complex network issues in multi-vendor environments.
  • Collaborate with cybersecurity teams to apply Zero Trust Architecture principles and implement network segmentation.
  • Support automation initiatives using scripting, infrastructure-as-code, and orchestration tools.
  • Provide technical mentorship to junior engineers and lead technical reviews and modernization roadmaps.

Qualifications

  • This position requires eligibility for a U.S. Government security clearance. In accordance with federal law, U.S. citizenship is required. 
  • Must currently hold a U.S. Government Secret Security Clearance.
  • Bachelor’s degree in Information Technology, Computer Science, Engineering, or a related field; or equivalent experience.
  • Minimum of 7 years of experience in enterprise network engineering or architecture roles.
  • Proven experience with Layer 2 and Layer 3 networking, routing protocols (OSPF, BGP, EIGRP), and enterprise switching technologies.
  • Strong understanding of network security fundamentals, segmentation, and WAN/remote connectivity solutions.
  • Hands-on experience with Cisco or similar enterprise networking platforms, including troubleshooting and analysis tools.
  • Ability to support implementation, testing, and operational transition activities.
  • Proficiency in MS Office applications including Word, Excel, PowerPoint, and Visio.
  • Valid DoD 8140 IAT II Baseline Certification: CompTIA Security+ CE or SSCP, and Cisco CCNA certification.

Publishing Pay Range: $67.00 – $70.00 Hourly 

This position is onsite and requires 25% travel. 

About GDH:
At GDH, we believe in the power of people and the importance of caring. Our culture statement, “We care about people,” isn’t just a tagline – it’s the core of everything we do. GDH is a premier staffing and talent solutions company dedicated to helping businesses find the best talent and assisting job seekers in finding their dream jobs.

Who We Are:
GDH, founded in 2001, has grown into a leader in providing staffing solutions across various industries. We specialize in IT across several sectors, connecting top talent with leading enterprises. As a Best of Staffing firm recognized for excellence in client, employee, talent, and women’s services, we pride ourselves on our commitment to quality and service.

GDH Benefits

GDH offers a range of employee benefits that are designed to promote well-being and help maintain a healthy work-life balance. These comprehensive benefits cover various aspects of an employee’s life and aim to enhance their overall experience with the company. Our health benefits include three medical insurance options with access to KISx Card, Zero Card, and HealthJoy concierge services. Other plan offerings include dental, vision, life, disability, supplemental insurance, and pet insurance plans. Enjoy additional perks like holiday pay, 401(k) plan, direct deposit, an employee referral program, work-life balance benefits, a Wellbeats membership, a discounted gym membership program, and more!  For more detailed information on benefits, please go to GDH’s website under the tab for candidates.

GDH provides equal employment opportunities (EEO) to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, gender, sex (including pregnancy), sexual orientation, gender identity, national origin, age, disability, genetic information, marital status, ancestry, protected veteran status, military or uniformed service member status, or any other status or characteristic protected by applicable federal, state, and local laws. Applicants with disabilities who require an accommodation or assistance in applying and/or for interviewing, please contact our HR Department.

Please visit our notice of collection for California applicants.

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