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F5 Network Engineer

Job in Springfield, Fairfax County, Virginia, 22161, USA
Listing for: CACI International Inc
Full Time position
Listed on 2026-01-01
Job specializations:
  • IT/Tech
    Systems Engineer, Cybersecurity
Job Description & How to Apply Below

Overview

Join to apply for the F5 Network Engineer role at CACI International Inc
.

The Opportunity:

F5 Network Engineer performs research, requirements analysis, design, installation, documentation, troubleshooting, and sustainment of local- and wide-area network hardware and services. Develops system specifications, architecture designs, integration and test plans, and all relevant documentation. Maintain compliance with QA standards as well as ensuring service performance indicators are met or exceeded. Experience in reviewing mission-related change requirements such as Change Requests (CRQs) and determining impacts on Transport activities across the Enterprise while providing Technical solutions.

Responsibilities
  • Engineer and implement solutions for projects based on customer Change Requests
  • Serve as the technical representative for assigned projects
  • Provide recommendations on newly submitted action items
  • Coordinate issues with the appropriate owners/organizations
  • Evaluate and report on new/emerging network/communication technologies to enhance the capacity, performance, and reliability of the network
  • Evaluate and recommend changes and/or technology upgrades to address performance, standardization, and industry best practices
  • Follow all Customer network security processes and procedures, and ensure compliance with all Government policies
  • Develop and maintain network architecture diagrams
Qualifications
  • Security Clearance: active TS/SCI
  • Experience with F5 (APM, AFM, SSLO, etc.)
  • Competent with mutual Transport Layer Security (mTLS)
  • Experience with Online Certificate Status Protocol OCSP revocation
  • Familiar with DoD PKI, Kerberos, LDAP, Active Directory, HTML
  • Ability to describe and troubleshoot TLS/SSL handshake/connection issues
  • Experience with HTTP, SAML, and OAuth
  • Network design, engineering, and implementation (Advanced Level)
  • Creation of network-related Rough Order Magnitude (ROM) equipment lists and costing
  • Understanding of DISA and IC standards and processes
  • Interpersonal skills to help negotiate priorities
  • Ability to work weekends and evening hours as needed
  • Ability to work independently with little direction and guidance
  • Ability to obtain and maintain a CI polygraph
  • 10+ years of related technical experience in Network and Transport technologies, tools, and techniques
  • 5+ years experience with large-scale enterprise/global networks in a fast-paced diverse environment
  • Understanding and experience with the DoD Architecture Framework and other key DoD network architecture and strategic planning instructions
  • IAT II Certification
Desired
  • Master’s degree in Computer Science or related field
  • F5 Networks Certified Technology Specialist (CTS)
  • CISCO CCNP, CCVP, CCNA, or CCDP (or equivalent)
  • ITIL v3 Foundations
  • ISC2 CISSP

This position is contingent on funding and may not be filled immediately. However, this position is representative of positions within CACI that are consistently available. Individuals who apply may also be considered for other positions at CACI.

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…

Position Requirements
5+ Years work experience
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