DHS Information Systems Security Engineer

OneZero Solutions; Washington (District of Columbia); On-site; USD 120,000 - 160,000; Full time

Benefits offered by this job

Qualified Parking Allowance

Job summary

OneZero Solutions is seeking a Senior Information Systems Security Engineer to lead security control design, implementation, and testing for DHS systems in Washington, D.C. The role requires 12+ years of relevant experience and proficiency in security methodologies and technologies.

Ideal candidates will have a Bachelor's degree or relevant certifications, strong problem-solving skills, and the ability to thrive in fast-paced environments.

Equity and diversity are essential to our mission. We encourage applications from all qualified candidates.

Qualifications

• 12+ years of experience as an Information Systems Security Engineer in DoD/Federal Government.
• Proven success in designing and maintaining secure IT systems.
• Expertise in security assessment methodologies and penetration testing tools.

Responsibilities

• Lead design and implementation of security controls for DHS systems.
• Conduct security assessments and penetration testing.
• Configure and manage security appliances and firewalls.

Skills

Information Systems Security Engineering

Penetration Testing

Network Security

Incident Response

Vulnerability Management

Education

Bachelor's degree or advanced security-related certifications

Tools

Firewalls

IDS/IPS

SIEM systems

OpenRMF

Job description

Position: DHS Information Systems Security Engineer Senior

Location: NCR

Security Clearance Required: TS/SCI

Job Summary

• Lead the design, implementation, and testing of security controls for DHS systems and networks, applying advanced security principles and best practices.
• Conduct comprehensive security assessments and penetration testing, identifying vulnerabilities and recommending mitigation strategies.
• Configure and manage security appliances, firewalls, intrusion detection/prevention systems (IDS/IPS), and other security technologies.
• Develop and maintain secure network architectures and system configurations.
• Work with system owners and developers to integrate security controls into system development and implementation processes.
• Stay current with evolving security threats, vulnerabilities, and industry best practices.
• Contribute to the development and refinement of security engineering methodologies and procedures.
• Collaborate with ISSO and other DHS teams on incident response and remediation efforts.
• Mentor and guide junior ISSO staff, fostering professional development.

Qualified Parking Allowance

Employer may provide a monthly stipend or cover the cost of parking for employees who commute to a government site by car.

Qualifications

• 12+ years of direct experience serving as an Information Systems Security Engineer (ISSE) within the DoD/Federal Government. Experience within the Intelligence Community and Law Enforcement is a strong plus.
• Proven track record of success in designing, implementing, and maintaining secure IT systems, demonstrating innovation, initiative, and problem‑solving skills.
• In‑depth understanding of information security principles and best practices, including network security, cryptography, system security, vulnerability management, and incident response.
• Expertise in security assessment methodologies and penetration testing tools.
• Proficiency in security technologies and protocols, such as firewalls, IDS/IPS, VPNs, encryption, and security information and event management (SIEM) systems.
• Experience with relevant security frameworks and standards, such as DoD STIG, NIST Cybersecurity Framework, FISMA, RMF, and DHS supplemental IA controls and security policies.
• Experience with OpenRMF is a strong plus.
• Excellent analytical and problem‑solving skills.
• Strong written and verbal communication skills.
• Ability to work independently and as part of a team in a fast‑paced environment.

Education

Bachelor's degree and/or CRISC, GISP, CASP, CISSP, or other advanced security‑related certifications. Additional relevant experience may be considered in lieu of a degree.

Equal Opportunity Employer

OneZero Solutions, LLC is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.

Accommodation Request

If you are a qualified individual with a disability or a disabled veteran, you have the right to request an accommodation if you are unable or limited in your ability to use or access the company's career site as a result of your disability. To request an accommodation, please contact [e-mail] or call [phone].