Senior Information System Security Officer (ISSO) - (Active TS/SCI Clearance with Full Scope Poly Required)

Zohorecruit; Corridor North (MD); On-site; USD 140,000 - 190,000; Full time

Benefits offered by this job

Health Insurance

Dental and Vision Insurance

Life Insurance

Disability Insurance

Paid Holidays & PTO

Parental Leave

Tuition Reimbursement

401(k) with company match

Job summary

Zohorecruit is seeking a Senior Information System Security Officer (ISSO) to oversee security for a large software development program. The role requires active TS/SCI clearance with a current polygraph and extensive ISSO experience across secure environments.

Responsibilities include enforcing information systems security policies, evaluating security solutions, managing SSPs, and coordinating CM for security software and hardware.

Qualifications

• Must have at least 10 years ISSO experience in secure information system operations across environments.
• Must have at least 5 years using IAVA management tools.
• Must have at least 5 years preparing, maintaining, and managing SSPs and related security documentation.
• Demonstrated knowledge of security tools, hardware/software security implementations, and encryption techniques.
• Experience evaluating security of software systems or architectures for security compliance.
• Experience proposing, coordinating, implementing, and enforcing information systems security policies on large programs.
• Active TS/SCI with a current polygraph is required.

Responsibilities

• Provide support for implementing and enforcing information systems security policies, standards, and methodologies.
• Assist in evaluating security solutions to meet security requirements for processing multiple information types.
• Assist with Configuration Management for information system security software, hardware, and firmware.
• Analyze threats and develop best practice methodologies for incident detection and remediation.
• Maintain records on workstations, servers, routers, firewalls, and other devices including upgrades.
• Develop and maintain documentation for Certification & Accreditation per policy.
• Provide CM for security-relevant software, hardware, and firmware.

Skills

ISSO experience

IAVA management

SSP documentation

Security policy enforcement

Incident detection & remediation

TS/SCI with poly

Security evaluations

Team player

Education

Bachelor's degree in related field

12+ years relevant experience

Job description

Senior Information System Security Officer (ISSO) - (Active TS/SCI Clearance with Full Scope Poly Required)

Annapolis Junction, United States | Posted on 10/01/2026

A leading cybersecurity provider is looking for a Senior ISSO!

The selected candidate will act as an ISSO for a large software development program which includes software maintenance and development, IT support (Network/Workstation/Server), systems integration and life cycle support, enterprise application development, network engineering, and information systems securi ty (ISS). The candidate will work with other security professionals in developing and implementing strategies to detect and mitigate t hreats to information systems, protect critical data sets, and provide assessments of system and network vulnerabilities.

Primary Roles and Responsibilities:

• Provide support for implementing and enforcing information systems security policies, standards, and methodologies.
• Assist in the evaluation of security solutions to ensure they meet security requirements for processing multiple types of information.
• Assist with the Configuration Management for information system security software, hardware, and firm ware.
• Analyze threats and develop and implement best practice methodologies for incident detection, reporting, and vulnerability remediation.
• Maintain record s on workstations, servers, routers, firewalls, intelligent hubs, network switches, etc. to include system upgrades.
• Evaluate security solutions to ensure they meet security requirements for proces sing information.
• Maintain operational security posture for information systems.
• Provide support to the Information System Security Manager (ISSM) for maintaining the appropriate operational IA posture for a system/program/enclave.
• Develop and maintain documentation for Certification & Accreditation in accordance with specified policies.
• Develop and update system security plans and other IA documentation.
• Provide support for Information Assurance Vulnerability Alerts (IAVAs) management (initiating IAVA responses and system security scans, completing remediation, extending IAVA patches and securit y updates to designated sites, etc.).
• Provide CM for security-relevant information system software, hardware, and firmware.
• Develop system security policy an d ensure compliance.
• Administer the user identification and authentication mechanisms of the Informatio n System.

Required Skills:

• Must have at least 10 years of experience as an ISSO working independently, and/or on teams maintaining secure information system operations in isolated, connected, and standalone environments.
• Must have at least 5 years of experience using tools to support IAVA management.
• Must have at least 5 years of experience using tools to support the preparation, maintenance, and management of SSPs and other security-related documentation.
• Demonstrated knowledge of and experience wit h several of the following: current security tools; hardware/sof tware security implementation; communication protocols; and encryption techniques/tools.
• In-depth experience completing security evaluations of software systems or architectures to ensure they meet security requirements.
• In-depth experience proposing, coordinating, implementing, and enforcing information systems security policies, standards, and methodologies, preferably on a large software or IT program.
• Demonstrated experience performing day-to-day security operations of large, complicated informatio n and information processing systems.
• Must be committed to developing and adhering to best practice s.
• Must possess a high level of self-initiative and must be a solutions-oriented team player.
• Must have excellent interpersonal s skills.
• Active TS/SCI security clearance with a current polygraph is required.

Desired Skills:

• Bachelor's degree in a related field and at least 12 years of relevant experience.
• Extensive experience as an Information Systems Security Officer on large software development and integration programs.
• IAT Level II or higher preferred.
• IAM Level II or higher preferred.

We believe in taking care of our employees both inside and outside the workplace. Our comprehensive benefits package includes:

• Health Insurance to ensure you and your family stay healthy and well.
• Dental and Vision Insuran ce for preventive and routine care.
• Basic Life Insurance and Disability Insurance to provide peace of mind for you and your love d ones.
• Paid Holidays and Paid Time Off (PTO) to help you relax, recharge, and enjoy life.
• Paid Parental Leav e for new parents to focus on family.
• Tuition Reimbursement to support your professional growth and education.
• A 401(k) plan with a company match to help you plan for your future.

The salary range for this role is $140,000 - $190,000. This range is a good-faith estimate that reflects various experience levels. We consider multiple factors when determining compensation, including the specific role and its responsibilities, the candidate's professional experience, geographic location, education, and relevant skills. This range is not a guarantee of s alary, as final compensation may also be influenced by contractual requirements and other considerations.

Equal Employment and Diversity:

We have, on many occasions, expressed support and commitment to the principles of diversity and equal employment opportunity. It is our policy to recruit, hire, train, and promote individuals, as well as administer all personnel actions, without regard to race, color, national or ethnic origin, pregnancy, age, religion, disability status, sex, sexual orientation, gender identity and expression, veteran status, genetic in formation or any other characteristic protected under applicable federal or state la w. We will not tolerate unlawful discrimination, and any such conduct is prohibited. We are committed to ensuring that our workforce and volunteers reflect America’s diverse population. We know that such diversity will enrich our organization with the talent, energy, perspective, and inspiration we need to achieve our mission.

About Us:

With industry-leading technologies, facilities, and certifications — driven by the best people — we are the premiere provider of secure supply chain solutions to U.S. Federal and discerning commercial clients.