Sr Cybersecurity ISSO

Entarian; Denver (CO); On-site; USD 135,000 - 155,000; Full time

Job summary

Entarian is seeking a senior Information System Security Officer (ISSO) to design, implement, and manage security controls protecting our IT infrastructure in a federal contracting environment. The ideal candidate will lead audits, enforce DISA STIGs, coordinate with system engineers, and support the Authority to Operate (ATO) process while traveling to Colorado Springs and Boulder.

Security+ and CISSP-level credentials are preferred, with Top Secret clearance.

Qualifications

• Bachelor’s degree or equivalent with 10+ years of relevant work experience.
• Security+ certification.
• CISSP or similar DODM 8140 IAM Level II qualification.
• Experience leading cybersecurity audits.
• Thorough understanding of cyber threats, information security, and monitoring/detection.
• Experience configuring Elastic stack and ACAS scans and dashboards.
• Travel to Colorado Springs and Boulder.

Responsibilities

• Create, review, and enforce security policies in line with DoD regulations.
• Identify vulnerabilities across Windows, Unix, and network devices.
• Oversee hardening and DISA STIG compliance for systems.
• Support ATO by evaluating NIST controls in FISMA Moderate/High environments.
• Develop Contingency Planning and Incident Response testing and execution.
• Perform risk assessments and mitigation planning.
• Scan, patch, remediate, and document vulnerabilities.
• Assist and lead security audits.

Skills

Security best practices

Threat monitoring

Audits experience

Vulnerability assessment

Risk assessment

Incident response

DISA/STIG expertise

Education

Bachelor’s Degree in Cybersecurity/CS/Systems Engineering/IT

Tools

Elastic stack

ACAS (Tenable)

Job description

Overview/ Job Responsibilities

Entarian is seeking a highly skilled and motivated senior Information System Security Officer (ISSO) to join our dynamic team. The ideal candidate will have a strong background in cybersecurity, with experience in designing, implementing, and managing security measures to protect our IT infrastructure. This role involves ensuring the integrity, confidentiality, and availability of our systems and data by safeguarding against cyber threats and ensuring compliance with DOD and industry regulations and best practices.

• Create, review, and enforce security policies and procedures that adhere to DOD regulations and industry best practices
• Work closely with network engineers and system engineers on the identification of vulnerabilities on all network assets, including but not limited to Windows, Unix, and Network devices
• Oversee and assist system administrators with interpretation, remediation, and hardening of systems to comply with DISA Security Technical Implementation Guides (STIGs)
• Support customer Information System Security Manager in maintaining the system’s Authority to Operate (ATO) support by evaluating NIST controls in both a FISMA Moderate and High Environment
• Develop and participate in Contingency Planning (CP) and Incident Response (IR) testing, planning, and execution
• Perform risk assessments to identify potential security threats and develop appropriate mitigation strategies
• Scan, patch, remediate, provide mitigation strategies, and document security vulnerabilities in operating systems and applications
• Assist and lead security audits

Salary range $135,000-$155,000

Minimum Qualifications

• Bachelor’s Degree in Cybersecurity, Computer Science, Systems Engineering, Information Technology or related field or experience equivalent with 10+ years of relevant work experience
• Security+ Certification
• CISSP or similar DODM 8140 IAM Level II qualification (e.g. – CISM, CASP+ CE. Etc.)
• Experience leading Cybersecurity/Information Security audits
• Thorough understanding of cyber threats, information security, and monitoring & detection using the latest monitoring tools
• Experience configuring Elastic stack and ACAS (Tenable) scans and dashboards
• Position requires some travel to Colorado Springs and Boulder
• Active Top Secret clearance

Desired Qualifications

• Knowledge of networking protocols (TCP/IP, DNS, HTTP/S, etc.) and their associated common attack vectors
• Knowledge of/experience with space mission systems
• Experience working in Department of Defense or with Department of Defense or Federal contracts

About Us

Formed through the strategic union of Sev1Tech and ERT, Entarian is a premier provider of mission-critical engineering and technology solutions. Founded on a legacy of excellence dating back to 1993, Entarian is a product of an evolved and fully diversified engineering and federal technology leader. From deep space to defense and civilian missions, Entarian delivers secure, mission-aligned digital solutions that drive national resilience and operational effectiveness. We don't just support modernization; we define it.

Entarian is anEqual Opportunity and Affi