782,981open jobs
49,348companies
120,575added this week
Browse all
Salary
$113k – $238k per year
Location
In office (Ashburn)
Seniority
Senior · 8+ years exp

Confirmed on the employer's own hiring board on Sep 25, 2026. First seen by Alion on Sep 22, 2026. CACI International scores D on the Alion truth index.

Overview
Company
Impact
Profile match
CACI International is an American technology company founded in 1962 that works almost entirely for United States defence, intelligence and federal civilian agencies. It has moved from being a conventional IT services contractor toward supplying its own technology, with a substantial expeditionary electronic warfare and signals intelligence product line, photonics and optical communications for space, and secure network modernisation. Headquartered in Reston, Virginia, the company employs more than twenty thousand people, the majority holding security clearances, and has grown through a steady programme of acquisitions that add differentiated technology rather than headcount alone.
Job Title: Senior Cyber Security EngineerJob Category: EngineeringTime Type: Full timeMinimum Clearance Required to Start: Top SecretEmployee Type: RegularPercentage of Travel Required: Up to 10%Type of Travel: Local* * *

The Opportunity:

CACI is seeking a Senior Cybersecurity Engineer for the Global Mission Operations Support (GMOS) contract, supporting the Department of State. This role offers a unique opportunity to enhance national security through advanced IT solutions. You will collaborate with experienced professionals in an innovative environment, guiding a high-performing team to deliver excellence. The GMOS contract aims to provide world-class IT support by modernizing and maintaining applications and infrastructure using an integrated IT Service Management approach. Join us to make a meaningful impact on a program of national importance.

Responsibilities:

  • Lead design, architecture, and implementation of comprehensive security solutions across global CA IT infrastructure supporting 40,000+ users across 350+ facilities
  • Ensure all engineering designs and infrastructure deployments incorporate comprehensive security best practices throughout the system development lifecycle, validating compliance with DOS security policies, FISMA requirements, NIST 800-53 controls, and STIGs
  • Design secure networking architectures within CA enclaves and complex network integrations with Department of State enterprise networks, implementing micro-segmentation strategies and boundary protection mechanisms
  • Lead implementation of advanced network security solutions including high-availability load balancing for public-facing websites, DDoS detection and mitigation systems, web application firewalls, and intrusion prevention systems
  • Design and implement FedRAMP-compliant cloud systems ensuring Department data sovereignty requirements, boundary protections, encryption, and CCGB approval
  • Develop and implement comprehensive security monitoring, logging, and alerting capabilities architecting SIEM integration, log aggregation frameworks, and real-time threat detection systems
  • Provide expert security guidance and technical leadership for infrastructure architecture initiatives ensuring alignment with DOS enterprise architecture standards and Federal cybersecurity frameworks
  • Master and architect DevSecOps tooling ecosystems including Ansible, Terraform, Jenkins, GitLab CI/CD, and SonarQube, constructing sophisticated CI/CD pipelines with automated security testing
  • Conduct advanced security risk assessments, penetration testing coordination, and security architecture reviews for complex systems, providing detailed technical analysis with remediation strategies
  • Serve as technical security expert and mentor for security engineering teams, providing leadership on complex security challenges and driving security-conscious culture across IT service delivery organizations

Qualifications:

Required -

  • Bachelor's degree + 8 years of experience in related fields, such as cybersecurity engineering, security architecture, systems security engineering, network security, or DevSecOps at enterprise scale; equivalencies considered.
  • Active Top Secret Clearance
  • Proven experience with enterprise-scale security engineering, security architecture design, and secure infrastructure design for complex, distributed environments
  • Demonstrated leadership experience managing complex security projects, leading technical teams, and coordinating security initiatives across distributed enterprise environments
  • Expert-level knowledge of security frameworks including NIST Cybersecurity Framework, NIST 800-53, FedRAMP requirements, and advanced network security architectures
  • Excellent leadership abilities with proven experience planning and leading major security engineering initiatives, functioning as a subject matter expert, and supervising security teams

Desired -

  • Prior experience supporting federal agencies, especially the Department of State
  • Advanced professional security certifications such as CISSP, CISM, Certified Cloud Security Professional (CCSP), GIAC Security Expert (GSE), or Offensive Security Certified Professional (OSCP)
-

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.

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.

The proposed salary range for this position is:

$113,200 - $237,800

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.

Free account
Stop reading job ads. Get the ones that fit.
One free account turns this page into a shortlist built around your stack, your level and your pay.
Match on every job. Stack, seniority, pay and location, scored against your profile.
782,981 open roles. Read straight off company career pages, refreshed every day.
Unlimited applications. Every one you send is tracked in one place, on-site or on a company board.
3 tailored CVs a month. Rewritten for the exact job you are applying to. Included free.
Create a free account Continue with Google
Free forever. No card. Under a minute.

Your match

How well do you fit this role?
Two answers are enough for a real match. No account needed.
Check my fit
Answers stay in this browser until you create an account.

Recommended for you based on this role

Security
Similar stack
Same company
Ashburn
$170k – $256k per year • Remote (United States, PT hours) • 5+ years exp
Python
Python
pySpark
Databases
Databricks
AI/ML
Copilot
Cursor
Spark
Claude Code
AI Agents
LLM
Red Teaming
DevOps
Splunk
GCP
Azure
AWS
Cybersecurity
Burp Suite
Cobalt Strike
BloodHound
Sliver
Mythic
OWASP Top 10
OWASP ASVS
CVE
osquery
Management
Stripe
Apply
$80k – $120k per year • In office • Full-Time • 4+ years exp • Bachelor's Degree • Edison
Python
DevOps
Ansible
TCP/IP
DNS
DHCP
VPN
Cybersecurity
PCI DSS
SOC 2
HIPAA
Zero Trust
Apply
$145k – $165k per year • Hybrid • 3+ years exp • Baltimore
Python
PowerShell
Bash
DevOps
Linux
Apply
$59k – $107k per year • In office • TS/SCI • Full-Time • 5+ years exp • Bachelor's Degree • Fort Meade
AI/ML
Machine Learning
Cybersecurity
MITRE ATT&CK
Cyber Kill Chain
Analytics
Power BI
Apply
Cyber SOC Manager 3 hours ago
$99k – $225k per year • In office • TS/SCI • Full-Time • 12+ years exp • Bachelor's Degree • Las Vegas
Cybersecurity
SIEM
Apply
$180k – $220k per year • Remote (United States, ET hours) • Contractor
JavaScript
Ruby
Elixir
Ruby
Ruby on Rails
Frontend
React.js
Mobile
React Native
DevOps
Terraform
Ansible
Azure
CI/CD
AWS
Apply
$130k – $155k per year • Remote (United States) • Full-Time
JavaScript
Ruby
Elixir
Ruby
Ruby on Rails
Frontend
React.js
Mobile
React Native
DevOps
Terraform
Ansible
Azure
CI/CD
AWS
Apply
Founding Engineer 4 hours ago
≈ $147k – $302k per year (Estimated) • Equity 0.5–3% • In office • Full-Time • San Francisco
DevOps
Terraform
GCP
Azure
CI/CD
AWS
Docker
Kubernetes
Analytics
ETL/ELT
Apply
Sr. AI Engineer 4B 4 hours ago
≈ $23k – $59k per year (Estimated) • Hybrid • Full-Time • 3+ years exp • Bachelor's Degree • Bengaluru
Python
JavaScript
TypeScript
Databases
Weaviate
Milvus
Pinecone
FAISS
AI/ML
LangGraph
LangChain
Claude
Prompt Engineering
AI Agents
LLM
RAG
Edge AI
Agentic Workflows
Multi-Agent Systems
Tool Use
Frontend
Angular
React.js
DevOps
Rest API
Azure
CI/CD
AWS
Docker
Kubernetes
Platform Engineering
GitHub
Apply
$121k – $266k per year • Hybrid • Public Trust • 13+ years exp • Bachelor's Degree • Washington
Python
JavaScript
TypeScript
C#
Node JS
C#
.NET
Databases
Databricks
AI/ML
LangChain
RAG
OpenAI
Edge AI
Frontend
Vue.js
Angular
React.js
DevOps
GCP
Azure DevOps
GitHub Actions
Azure
CI/CD
Git
AWS
GitHub
Analytics
Tableau
Power BI
Management
Agile
Scrum
Apply
$90k – $190k per year • In office • Secret • 5+ years exp • Bachelor's Degree • Colorado Springs
Cybersecurity
SIEM
Apply
Security Engineer 3 days ago
$90k – $190k per year • Remote (United States) • 7+ years exp • Bachelor's Degree • Washington
AI/ML
Edge AI
DevOps
GCP
Azure
AWS
Cybersecurity
OWASP Top 10
NIST 800-53
FedRAMP
Least Privilege
Microsoft Entra ID
SIEM
Apply
$87k – $182k per year • In office • Top Secret • 5+ years exp • Bachelor's Degree • Reston
Databases
Oracle
ActiveMQ
DevOps
OpenShift
Kubernetes
GitLab
Linux
Windows
Cybersecurity
NIST 800-53
Apply
$94k – $198k per year • In office • Top Secret • 4+ years exp • Bachelor's Degree • Ashburn
DevOps
Splunk
Terraform
Ansible
Azure
CI/CD
Jenkins
AWS
GitLab
Cybersecurity
SonarQube
NIST 800-53
FedRAMP
Zero Trust
Defense in Depth
Threat Modeling
IBM QRadar
SIEM
Apply
$78k – $164k per year • In office • Top Secret • 5+ years exp • Bachelor's Degree • San Antonio
DevOps
Splunk
GCP
Azure
AWS
Cybersecurity
NIST 800-53
FedRAMP
Zero Trust
Management
Agile
Scrum
Apply
$74k – $130k per year • Equity • In office • Full-Time • 4+ years exp • Bachelor's Degree • Ashburn
DevOps
AWS
SLI/SLO/SLA
Management
Microsoft Office
Apply
$54k – $96k per year • In office • Full-Time • 1+ year exp • Ashburn
DevOps
AWS
Apply
$152k – $244k per year • Hybrid • Full-Time • 11+ years exp • Bachelor's Degree • Ashburn
Python
AI/ML
Copilot
ChatGPT
DevOps
Terraform
Puppet
Ansible
GCP
OpenShift
Terragrunt
Chef
AWS
Docker
Kubernetes
DNS
DHCP
BGP
OSPF
MPLS
Apply
$121k per year • Equity • In office • Full-Time • 8+ years exp • Ashburn
Apply
$140k – $157k per year • In office • TS/SCI • Full-Time • 12+ years exp • Bachelor's Degree • Ashburn
DevOps
Azure
AWS
TCP/IP
Cybersecurity
Zero Trust
Apply
See all jobs
This is one of many
782,981 more open roles from verified company boards, updated every day.