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Cybersecurity Engineer, Senior

Job in St. Louis, Saint Louis, St. Louis city, Missouri, 63105, USA
Listing for: CACI International Inc
Full Time, Seasonal/Temporary position
Listed on 2026-09-25
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Engineer, IT Consultant
Salary/Wage Range or Industry Benchmark: 82100 - 172400 USD Yearly USD 82100.00 172400.00 YEAR
Job Description & How to Apply Below
Location: St. Louis

2 days ago Be among the first 25 applicants

Job Category:
Engineering

Time Type:
Full time

Minimum Clearance Required to Start: TS/SCI

Employee Type:
Regular

Percentage of

Travel Required:

Up to 10%

Type of Travel:
Local

Seniority level:
Mid-Senior level

Employment type:

Full-time

Job function:
Information Technology

Industry: IT Services and IT Consulting

The Opportunity

TCS offers a long-term contract opportunity supporting the National Geospatial-Intelligence Agency’s (NGA). Our team of talented Network and Cybersecurity professionals help design, develop, procure, implement, operate/sustain, and enhance NGA networks and cybersecurity posture in support of national security.

Joining the TCS Team means working with truly cutting‑edge technologies, on high performing cyber engineering teams, and benefiting from accelerated professional growth!

  • Build, deploy, configure, and maintain on-premises and cloud‑based cybersecurity infrastructure and applications running on Windows and Linux operating systems
  • Engineer and implement cybersecurity solutions leveraging cloud services such as EC2, EBS, ELB, S3, and RDS. Provision AMIs, perform software installations, troubleshooting and maintenance.
  • Assist with research and implementation of enterprise‑wide cybersecurity solutions/capabilities/enhancements to support customer business/mission goals and objectives.
  • Evaluate and recommend changes and/or technology upgrades to address performance, standardization and industry best practices
  • Provide specific, 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.
Responsibilities
  • Represent customer requirements in technical exchanges with other government agencies.
  • Develop and maintain architecture diagrams.
  • Develop and maintain a road map for capabilities, operations, and technologies.
  • Assist with development and execution of test plans and supporting documentation of all network configuration upgrades, additions or revisions for customer approval before implementation.
  • May serve as a team or task lead.
  • Coordinate with stakeholders and external assessors to facilitate security assessments and authorization processes.
Qualifications Required
  • A deep expertise in one of the following areas and working knowledge of one or more of the other following:
    Network Detection and Response (NDR), Endpoint Detection and Response (EDR), Next‑Generation Firewalls (NGFWs), Intrusion Detection/Prevention Systems (IDS/IPS), F5 platforms, email/web security gateways
  • Strong technical background with a thorough understanding of cloud infrastructure, security principles, compute, storage, and transport.
  • Expertise in Windows and Linux server operating systems.
  • Excellent writing and communication skills, including the ability to develop analytical documents and present oral presentations to senior/executive management
  • Ability to work independently with little direction and guidance
  • 6+ years related technical experience in network/cybersecurity engineering and experience with large‑scale enterprise/global networks in a highly diverse environment with an emphasis in DoD capabilities
  • Demonstrated experience modernizing complex enterprise cybersecurity systems.
  • Candidate must have a TS/SCI with ability to obtain a Polygraph
  • Certified DoD 8140.01 and 8570.01-M Information Assurance Technical Officer (IAT) Level III and Information Assurance System Architecture and Engineering Specialist (IASAE) Level II.
  • CSSP Infrastructure Support certification within 6 months of start date.
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,…

Position Requirements
10+ Years work experience
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