Careers
Do the most meaningful work in cybersecurity.
CDT is a security-focused company with an entrepreneurial culture and a family-oriented environment that rewards creativity, efficiency and innovation.
Working for CDT
We take care of our people.
We provide the resources to help our team take care of their families, prepare for retirement and advance their careers.
Savings & retirement
A generous 401(k) match on your contributions, and the company match vests immediately.
Comprehensive health insurance
Our fixed-dollar contribution typically covers 100% of team members' costs for health, dental, vision, disability, AD&D and life insurance, plus part of family health and dental premiums. Vision is free for employees and their families.
Flexible time off
11 holidays and paid time off you can use flexibly, with flex time available within the pay period.
Training & certifications
Training reimbursement, continuing education credits to maintain certifications, and reimbursement for new job-related certifications.
Conferences
We sponsor team members to attend conferences such as InfoWarCon and DEF CON.
Referral bonuses
Referral bonuses of up to $3,500, depending on the candidate's qualifications.
Open positions
Join the team
We're always looking for skilled people who are passionate about cybersecurity: security architects, penetration testers and governance, risk and compliance experts.
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Red Team Operator
Overview: CDT is looking for a Red Team Operator to support a government customer onsite in Chantilly, VA. Candidates with OSCP certification are highly recommended to apply. Clearance: An active Top Secret/SCI with CI Polygraph is required. Candidates who do not meet these requirements will not be...
Chantilly, Virginia Direct hire Posted Oct 22, 2026
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Capture/Proposal Manager
Overview: Cyber Defense Technologies (CDT) is looking for a Capture/Proposal Manager to lead the full business development lifecycle from opportunity identification through proposal submission and transition to program execution within a small business. This role is responsible for managing strategi...
Ashburn, Virginia Direct hire Posted Oct 21, 2026
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Senior Systems Security Engineer
Overview: Cyber Defense Technologies (CDT) is seeking a proactive Senior Systems Security Engineer to join our team and play a key role in integrating development, security, and operations to enhance our end-to-end system security. In this position, you will be responsible for designing and implemen...
Englewood, Colorado Direct hire Posted Oct 16, 2026
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Project Coordinator
Overview: Cyber Defense Technologies (CDT) is seeking a Project Coordinator to join our team to facilitate effective planning, execution, monitoring, and delivery of high-priority projects. The position supports the development and maintenance of high-level project schedules, resource tracking, cont...
Chantilly, Virignia Direct hire Posted Oct 14, 2026
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Senior DevOps Engineer
Overview: Cyber Defense Technologies (CDT) is seeking a proactive Senior Systems Security Engineer to join our team and play a key role in integrating development, security, and operations to enhance our end-to-end system security. In this position, you will be responsible for designing and implemen...
Englewood, Colorado Direct hire Posted Oct 2, 2026
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Office Administrator
Overview: CDT is seeking to add a customer focused full-time Office Administrator to join our team onsite in St. Petersburg, FL. This position is on-site five days a week. This position reports to the VP of Operations in VA and works closely with all employees at the St. Petersburg office to meet lo...
St. Petersburg, Florida Direct hire Posted over 30 days ago
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Information System security Engineer
Overview: CDT is seeking an experienced and skilled ISSE for a DoD program in Cedar Rapid, Iowa. This position is hands-on technical and will provide on-site security engineering, systems administration, and information assurance support to the program. Clearance Requirements: An active Secret is re...
Cedar Rapid, Iowa Direct hire Posted over 30 days ago
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Tier 2 Help Desk/ System Administrator
Overview: Cyber Defense Technologies (CDT) is seeking a proactive and technically skilled Tier 2 Help Desk/ Systems Administrator. The ideal candidate will have strong troubleshooting abilities, excellent communication skills and experience resolving complex technical issues. Clearance Requirements:...
Chantilly, Virginia Direct hire Posted over 30 days ago
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Information System Security Engineer (ISSE)
Overview: CDT is seeking an experienced and skilled ISSE for a DoD program in Westford, MA. This position is hands-on technical and will provide on-site security engineering, systems administration, and information assurance support to the program. Clearance Requirements: An active Secret is require...
Westford, Massachusetts Direct hire Posted over 30 days ago
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Red Team Operator/ Cloud Penetration Tester
Overview: CDT is looking for a Red Team Operator/ Cloud Penetration Tester to support a government customer onsite in Chantilly, VA. The ideal candidate possesses a deep understanding for information security, computer network operations, and cloud infrastructure, particularly with major cloud servi...
Chantilly, Virginia Direct hire Posted over 30 days ago
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Red Team Operator (Senior)
Overview: Cyber Defense Technologies (CDT) is looking for a Senior Red Team Operator to support a government customer onsite in Chantilly, VA. you will be responsible to lead in the design and execution of adversarial based security testing of various targets. Successful candidates must be capable o...
Chantilly, Virginia Direct hire Posted over 30 days ago
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Red Team Operator/ Cloud Penetration Tester
Overview: CDT is looking for a Red Team Operator/ Cloud Penetration Tester to support a government customer onsite in Chantilly, VA. The ideal candidate possesses a deep understanding for information security, computer network operations, and cloud infrastructure, particularly with major cloud servi...
Chantilly, Virginia Direct hire Posted over 30 days ago
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Information System security Engineer
Overview: CDT is seeking an experienced and skilled ISSE for a DoD program in Cedar Rapid, Iowa. This position is hands-on technical and will provide on-site security engineering, systems administration, and information assurance support to the program. Clearance Requirements: An active Secret is re...
Cedar Rapid, Iowa Direct hire Posted over 30 days ago
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Senior Penetration Tester
Overview: CDT is looking for a Senior Penetration Tester to support a government customer onsite in Chantilly, VA. Candidates with OSCP certification are highly recommended to apply. Clearance: An active Top Secret/SCI with CI poly is required. Candidates who do not meet these requirements will not...
Denver, Colorado Direct hire Posted over 30 days ago
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Intermediate Penetration Tester
Overview: CDT is looking for an Intermediate Penetration Tester to support a government customer onsite in Denver, Colorado. Candidates with OSCP certification are highly recommended to apply. Clearance: An active Top Secret/SCI with CI poly is required. Candidates who do not meet these requirement...
Denver, Colorado Direct hire Posted over 30 days ago
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SME Penetration Tester
Overview: CDT is looking for a SME Penetration Tester to support a government customer onsite in Denver, Colorado. Candidates with OSCP certification are highly recommended to apply. Clearance: An active Top Secret/SCI with CI poly is required. Candidates who do not meet these requirements will not...
Denver, Colorado Direct hire Posted over 30 days ago
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Junior Penetration Tester
Overview: CDT is looking for a Junior Penetration Tester to support a government customer onsite in Denver, Colorado. Candidates with OSCP certification are highly recommended to apply. Clearance: An active Top Secret/SCI with CI poly is required. Candidates who do not meet these requirements will....
Denver, Colorado Direct hire Posted over 30 days ago
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SME Penetration Tester
Overview: CDT is looking for a SME Penetration Tester to support a government customer onsite in Chantilly, VA. Candidates with OSCP certification are highly recommended to apply. Clearance: An active Top Secret/SCI with CI poly is required. Candidates who do not meet these requirements will not be...
Chantilly, Virginia Direct hire Posted over 30 days ago
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Senior Penetration Tester
Overview: CDT is looking for a Senior Penetration Tester to support a government customer onsite in Chantilly, VA. Candidates with OSCP certification are highly recommended to apply. Clearance: An active Top Secret/SCI with CI poly is required. Candidates who do not meet these requirements will not...
Chantilly, Virginia Direct hire Posted over 30 days ago
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Intermediate Penetration Tester
Overview: CDT is looking for an Intermediate Penetration Tester to support a government customer onsite in Chantilly, VA. Candidates with OSCP certification are highly recommended to apply. Clearance: An active Top Secret/SCI with CI poly is required. Candidates who do not meet these requirements w...
Chantilly, Virginia Direct hire Posted over 30 days ago
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Junior Penetration Tester
Overview: CDT is looking for a Junior Penetration Tester to support a government customer onsite in Chantilly, VA. Candidates with OSCP certification are highly recommended to apply. Clearance: An active Top Secret/SCI with CI poly is required. Candidates who do not meet these requirements will not...
Chantilly, Virginia Direct hire Posted over 30 days ago
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Cyber Analyst/ Cyber Security Analyst
Position: Cyber Analyst/Cyber Security Analyst Overview: Cyber Defense Technologies (CDT), a leading small business cybersecurity and engineering firm, is seeking a skilled and detail-oriented Cyber Analyst/Cyber Security Analyst onsite in Dayton, OH with a TS/SCI clearance. In this role, you will m...
Dayton, Ohio Direct hire Posted over 30 days ago
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Information System Security Engineer (ISSE)
Position: Information System Security Engineer Overview: Cyber Defense Technologies (CDT), a leading small business cybersecurity and engineering firm, is seeking a skilled and detail-oriented Information System Security Engineer onsite in Dayton, OH with a Secret Clearance or Higher. Responsibiliti...
Dayton, Ohio Direct hire Posted over 30 days ago
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Information System Security Officer (ISSO)- Junior
Overview: CDT is looking to add a Information Systems Security Officer (ISSO) to provide advice and assistance to secure configuration and operations to the customer’s IT assets. This position will be onsite in Chantilly, VA. Clearance: An active Top Secret/SCI clearance with CI Poly is required. Ca...
Chantilly, Virginia Direct hire Posted over 30 days ago
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Penetration Tester
Overview: CDT is looking for a Penetration Tester to This will be supporting a government customer onsite in Chantilly, VA. Candidates with OSCP certification are highly recommended to apply. Clearance: An active Top Secret/SCI with CI poly is required. Candidates who do not meet these requirements...
Chantilly, Virginia Direct hire Posted over 30 days ago
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Information System Security Engineer
Overview: CDT is seeking an experienced and skilled ISSE for a DoD program in Richardson, TX. This position is hands-on technical and will provide on-site security engineering, systems administration, and information assurance support to the program. Clearance Requirements: An active Secret is requi...
Richardson, Texas Direct hire Posted over 30 days ago
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Information Systems Security Officer (ISSO)
Overview: CDT is looking to add a Information Systems Security Officer (ISSO) to provide advice and assistance to secure configuration and operations to the customer’s IT assets. This position will be onsite in Chantilly, VA. Clearance: An active Top Secret/SCI clearance with CI Poly is required. Ca...
Chantilly, Virginia Direct hire Posted over 30 days ago
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Security Control Assessor (SCA)
Overview: CDT is looking to add an experienced Security Control Assessor (mid to senior) to support a government customer in Chantilly, VA. Clearance: An active Top Secret/SCI clearance with CI Poly is required. Candidates who do not meet these clearance requirements will not be considered. Qualific...
Chantilly, Virginia Direct hire Posted over 30 days ago
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Senior Security Control Assessor (SCA)
Overview: CDT is looking to add a Senior Security Control Assessor to provide information security Assessment and Authorization (A&A) support and ensure implementation of appropriately applied proper IS security resources onsite for a government customer in Chantilly, VA. Clearance: An active Top Se...
Chantilly, Virginia Direct hire Posted over 30 days ago
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Senior Information System Security Officer (ISSO)
Overview: CDT is looking to add a Senior or SME Information Systems Security Officer III to provide advice and assistance to secure configuration and operations to the customer’s IT assets. Level 3 ISSOs apply extensive knowledge and experience of a variety of information system security concepts, p...
Chantilly, Virginia Direct hire Posted over 30 days ago
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Senior Information System Security Officer (ISSO)
Overview: CDT is looking to add a Senior Information Systems Security Officer to provide advice and assistance to secure configuration and operations to the customer’s IT assets. Apply extensive knowledge and experience of a variety of information system security concepts, practices, and procedures...
Chantilly, Virginia Direct hire Posted over 30 days ago
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Information System Security Officer
Overview: CDT is looking to add an experienced Information Systems Security Officer maintain security operations to various specialized applications. This position will be onsite in Chantilly, VA. Clearance: An active Top Secret/SCI clearance with CI Poly is required. Candidates who do not meet thes...
Chantilly, Virginia Direct hire Posted over 30 days ago
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General application
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Tell us about yourself. We keep strong applications on file and reach out when a position matches your experience and clearance.
CDT is an equal opportunity employer. We consider all applicants without regard to race, color, religion, creed, sex, sexual orientation, gender identity, age, national origin, marital status, disability, pregnancy, genetic information, veteran status or any other characteristic protected by federal, state or local law.
Send us your resume through our careers portal. We keep strong applications on file and reach out when a position matches your experience and clearance.
Go to our careers portal (opens our careers portal on CATS, our recruiting system, in a new tab)
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Veterans: your next mission starts here.
More than 65% of our team are veterans. Many of our engineers came to CDT straight from military service.