Junior to Mid-Level Network Engineer

National Security & Defense At Jacobs, we're challenging today to reinvent tomorrow by solving the world's most critical problems for thriving cities, resilient environments, mission-critical outcomes, operational advancement, scientific discovery and cutting-edge manufacturing, turning abstract ideas into realities that transform the world for good.

Your impact

Knack Works is seeking a qualified and highly motivated Junior to Mid-Level Network engineer to support the design, implementation and maintenance of our network infrastructure in the Chantilly, VA office. The role is ideal for someone with hands-on experience in routing, switching and firewall technologies who enjoys designing and developing technical networks.

Duties/Task and Responsibilities

Collaborate with a team of engineers to design, implement and test features and functionality to support Knack Works’ high performance computing products

Interact with customers to gather requirements and help develop use cases

Assist in the design and planning of network communication systems

Provide specification documentation and detailed schematics for network architecture

Develop and define techniques and tools to support the most efficient solution to meet program needs

Conduct testing of network design and implementation

Maintain and provide technical expertise in all areas of hardware (network and computer), software interconnections, and interfaces such as routers, firewalls, switches, bridges, gateways, etc.

Troubleshoot network connectivity, performance, and security issues

Upgrade and implement improvements to the entire network system for the supported programs

Support LAN/WAN, VLANs, VPNs, and basic QoS configurations

Perform hardware installation, cabling coordination, and device turn-ups

Maintain accurate network documentation, including:

Network diagrams and drawings

IP addressing schemes

Device configurations and inventories

Follow change management and implementation best practices

Collaborate with systems, security, and support teams as needed

Here's what you'll need

1 to 4 years of hands-on network engineering or network support experience with a bachelor’s degree in Computer Engineering, Network Engineering or related field

Solid understanding of:

Routing protocols (e.g., OSPF, BGP basics)

Switching technologies (VLANs, STP, trunking)

Firewall concepts and rule management

Experience with installation and implementation of network hardware

Familiarity with common networking vendors (e.g., Cisco, Palo Alto, Juniper, etc.)

Ability to create and maintain clear technical documentation

Strong troubleshooting, problem-solving and analytical skills

Good communication and collaborations skills with the ability to work in a team environment

Experience with LAN/WAN operations and protocols

Experience working in development and operational networking environments

A current active TS with SCI eligibility and willingness to take a polygraph exam

Ability to obtain a CompTIA Security+ CE certification within the first 6 months of employment

Experience with LAN/WAN operations and protocols

Experience working in development and operational networking environments

A current active TS with SCI eligibility and willingness to take a polygraph exam

Ability to obtain a CompTIA Security + CE certification within the first 6 months of employment

Desired Requirements:

VMware vSphere configuration and maintenance experience

A valid CompTIA Security+ CE certification

Network certifications (CCNA, Network+, or equivalent)

Experience with:

VPN technologies (site-to-site and remote access)

Wireless networking

Network monitoring tools

Exposure to cloud networking (AWS, Azure or similar)

Experience working in an enterprise or multi-site environment

What We Offer:

Opportunity to grow into a senior network engineering role

Hands-on exposure to real-world network projects

Supportive team environment with mentoring

Competitive salary and outstanding benefits package

Training and certification support

Posted Salary Range: Minimum

110,000.00

Posted Salary Range: Upper

160,000.00

Our health and welfare benefits are designed to invest in you, and in the things you care about. Your health. Your well-being. Your security. Your future. Employees have access to medical, dental, vision, and basic life insurance, a 401(k) plan, paid time off, and Profit-Sharing Plan (PSP) which includes both PSP contributions and an optional 401(k) plan (available immediately (i.e., no deferment or wait period), and the ability to purchase company stock at a discount. Eligible employees may also enroll in a deferred compensation plan or the Executive Deferral Plan. And certain roles may be eligible for additional rewards, including merit increases, performance discretionary bonus, and stock.

The base salary range for this position is $110,000.00 to $160,000.00. Within the range, individual pay is determined by work location and additional factors, including job-related skills, experience, and relevant education or training.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or protected veteran status. Job posted on February 05, 2026. This position will be open for at least 3 days.

Onsite employees are expected to attend a Jacobs Workplace on a full-time basis, as required by the nature of their role.

Your application experience is important to us, and we’re keen to adapt to make every interaction even better. If you require further support or reasonable adjustments with regards to the recruitment process (for example, you require the application form in a different format), please contact the team via Careers Support .

Locations

City State Country
Chantilly	Virginia	United States