Network Designer (TS/SCI Clearance with Full Scope Poly Required)

J&T; Springfield (VA); On-site; USD 128,000 - 145,000; Full time

Job summary

J&T is seeking a Network Designer to support government-grade global enterprise networks. The role focuses on MPLS WAN architecture, hands-on router engineering, and critical troubleshooting to ensure secure, mission-focused operations.

The candidate will develop MPLS WAN services, evaluate lab equipment, assist with security accreditation, and maintain technical documentation. A TS/SCI with Polygraph clearance is required and DoD 8140 IAT Level 2 certification is mandatory.

Qualifications

• Active TS/SCI with Polygraph clearance is required.
• 16 years of experience total via work history and education (e.g., Doctorate + 8 years, Bachelor + 12 years, etc.).
• DoD 8140 Information Assurance Technical (IAT) Level 2 certification required.
• Hands-on router engineering and/or operation experience.

Responsibilities

• 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 an as-needed basis, supporting Tier-4 production troubleshooting and developing proactive network analysis solutions for the operations team

Skills

Clearance TS/SCI with Polygraph

Hands-on router engineering

MPLS WAN architecture

Tools

DoD 8140 IAT Level 2

Job description

Network Designer 3

• Job ID: 26-16553814

• Location: Springfield, VA, US, 22150

• Department: Network Engineering

• Employment Type: Full-Time

• Security Clearance: TS/SCI w/ Poly

• Posted Date: October 23, 2026

Job Description

The Design Engineer will 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 an as-needed basis, supporting Tier-4 production troubleshooting and developing proactive network analysis solutions for the operations team

Required Skills & Qualifications

• Clearance: Active TS/SCI with Polygraph required

• Experience & Education: Candidate must have 16 years of experience that can be a combination of work history and education (Doctorate + 8 years, Bachelor's + 12 years, Associate's + 14 years, or High School Diploma + 16 years)

• Certifications: Compliance with Department of Defense (DoD) 8140 Information Assurance Technical (IAT) Level 2 required

• Technical Experience: Hands-on router engineering and/or operation experience

Additional Details & Compensation

• Salary Range: $128,000 – $145,000 (A good-faith estimate reflecting various experience levels, skills, geographic location, and contractual requirements)

• Benefits Package:

  • Comprehensive Health, Dental, and Vision Insurance

  • Basic Life and Disability Insurance

  • Paid Holidays and Paid Time Off (PTO)

  • Paid Parental Leave

  • Tuition Reimbursement

  • 401(k) Plan with Company Match

Equal Employment & Diversity

We are committed to the principles of diversity and equal employment opportunity. It is our policy to recruit, hire, train, and promote individuals without regard to race, color, national or ethnic origin, pregnancy, age, religion, disability status, sex, sexual orientation, gender identity and expression, veteran status, genetic information, or any other characteristic protected under applicable federal or state law.