Security engineer Jobs in Thornton, CO

Network Engineer

Job Category : Information Technology

Time Type : Full time

Minimum Clearance Required to Start : None

Employee Type : Regular

Percentage of Travel Required : Up to 10%

Type of Travel : Local

Anticipated Posting End : 6 / 30 / 2025

The Opportunity :

CACI is seeking a Network Engineer to support the Federal Protective Service (FPS) located in Denver, CO.

• Responsible for the implementation, deployment, and maintenance of networks for a federal government customer's distributed enterprise network environment supporting voice, data, and video services.
• Establish networking environment by managing system configuration, installing systems, documenting system architecture, and adhering to network standards.
• Provide detailed information for hardware and software selection, implementation techniques, and tools for the most efficient solution to meet business needs, including present and future capacity requirements.
• Configure, install, troubleshoot various network devices and services (e.g., routers, switches, firewalls, VPN), LAN, and WAN.
• Provide recommended patching and upgrades ensuring mitigation of non-compliant and vulnerable hardware and software.
• Analyze user’s Information Technology (IT) requirements, concept of operations documents, and high-level system architectures.
• Validate system requirements and provide recommendations.
• Advise senior level customers on network architecture and optimization.
• Support end-user deployments via Group Policy Objects (GPOs)

Responsibilities :

Implement and maintain an enterprise network environment to include Cisco routers, Cisco & Dell switches (Multi-Layer, Data Center / Access / Core / Distribution), Palo Alto firewalls and Software Defined Access (SDA)

Create and maintain Standard Operating Procedures (SOPs), IP / Ports and Protocols Listings, and Network Diagrams

Conduct testing of network systems. Maximize network performance by monitoring performance; responding to and troubleshooting network problems and outages; scheduling upgrades; conducting equipment refreshes; collaborating with network architects on network optimization.

Utilize monitoring, performance analysis, network management, software and hardware equipment to troubleshoot and isolate problems, assess network performance, and trace data and protocol activity.

Track all work activities in Service Now.

Qualifications : Required :

Ability to obtain DoD Security Clearance

Ability to obtain Department of Homeland Security (DHS) Entry On Duty (EOD) - Active EOD preferred

BA / BS + 8 years of applicable experience or 14 years without degree

One of the following certifications :

o CompTIA Network+

o CCNA

o CCNP

Previous experience working on physical and logical network infrastructure installation or deployment / refresh projects

Experience with making configuration changes on switches, routers, and firewalls

Experience with systems and network monitoring tools

Experience gathering technical and business customer requirements

Strong networking background to be able to troubleshoot complex network issues

Ability to work independently and as part of a team

Able to communicate clearly and professionally with senior customers to field and troubleshooting questions and issues

Experience with well-architected design principles for network Security, Reliability, Performance Efficiency, Operational Excellence, and Cost Optimization

Implementation of Network KPIs and Dashboards for measuring, assessing, and reporting the quality, health, and capability of the network

Experience with Software Defined Networks

Windows Server administration

Desired :

CompTIA A+

CompTIA Security+

CCNP Security

Implementation of New Generation Firewalls

Experience with Cisco DNA-C

Experience with Windows Domain and Active Directory environments

Previous DHS or DoD experience

Cloud network or architecture experience (E.g., Nutanix, AWS, Azure, Google, etc.)

What You Can Expect :

A culture of integrity.

At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high-performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation.

An environment of trust.

CACI values the unique contributions that every employee brings to our company and our customers - every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.

A focus on continuous growth.

Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy.

Your potential is limitless. So is ours.

Learn more about CACI here.

Pay Range : There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits. Learn more here .

The proposed salary range for this position is :

99,300 - 208,600 USD

CACI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.