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Information Systems Security Officer at Ardent | Washington, D.C. Metro

Ardent Management Consulting, LLC

Full-time|Hybrid|Washington, D.C. Metro

Are you looking to make a meaningful impact while enjoying a fulfilling career? At Ardent Management Consulting, we believe you shouldn't have to compromise between doing important work and achieving personal satisfaction. Our team is dedicated to tackling our clients' toughest challenges, and we prioritize the well-being, aspirations, and professional growt…

Feb 10, 2026

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Information System Security Officer (ISSO)

SpryMethods

Full-time|On-site|Washington, DC

Position Overview:We are seeking a dedicated Information System Security Officer (ISSO) to play a pivotal role in safeguarding our mission-critical applications and infrastructure across various network enclaves, including Unclassified, Secret, and Top Secret environments. The ISSO will be tasked with crafting, updating, and enforcing robust security policies, implementing comprehensive cybersecurity controls, managing Authority to Operate (ATO) documentation, and conducting continual monitoring and risk assessments to ensure compliance with FISMA, NIST, DOJ, and other federal regulations.

May 15, 2025

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Information Systems Security Officer (ISSO) at Avint | Washington, DC

Avint, LLC

Full-time|$110K/yr - $115K/yr|On-site|DC, Washington, United States

Join Avint, LLC as a dedicated and skilled Information Systems Security Officer (ISSO). We are looking for a candidate with extensive technical knowledge, hands-on experience in securing intricate systems, and a thorough understanding of U.S. Government cybersecurity regulations. This position is vital for leading system authorization activities, ensuring compliance, and maintaining the security and integrity of cloud and on-premises environments.The ideal applicant must be a U.S. citizen with an active Top Secret clearance and SCI eligibility, and possess a DoD 8570 certification (CISSP, Security+, etc.). The role requires the candidate to work on-site in Washington, D.C. or at locations throughout the DC Metro area five days a week. Additionally, the candidate should be prepared for domestic and international travel of up to 25%.

Jan 21, 2026

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Information Systems Security Officer

SMX Technologies

Full-time|$114.6K/yr - $192.5K/yr|On-site|Washington, DC

The Chief Information Officer (CIO) of a Law Enforcement Agency is seeking dynamic Information Systems Security Officers (ISSO) to enhance cybersecurity measures. This is an on-site position located in Washington, DC, requiring an active Top-Secret clearance.Key Responsibilities:Oversee daily implementation and monitoring of security configurations, practices, and procedures for information systems.Act as a liaison between system owners and information security personnel to ensure effective communication and security measures.Verify that chosen security controls are effectively implemented throughout all phases of the information system lifecycle.Develop and maintain comprehensive system security documentation, ensuring it is continuously updated.Conduct required vulnerability scans in accordance with risk assessment parameters.Create Plans of Action and Milestones (POAMs) to address identified security vulnerabilities.Manage risks to information systems and FBI assets by coordinating corrective or mitigative actions and ensuring timely completion of POAMs.Ensure system owner concurrence for corrective actions.Monitor security controls for FBI information systems to uphold security Authorizations to Operate (ATO).

Mar 19, 2026

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Information System Security Officer (ISSO)

Barbaricum

Full-time|On-site|Washington, DC

Barbaricum is a dynamic and rapidly expanding government contractor dedicated to providing exceptional support to federal clients, with a special emphasis on Defense and National Security initiatives. With over 17 years of experience, we have established robust capabilities across various domains, including Intelligence, Analytics, Engineering, Mission Support, and Communications. Our mission, founded in 2008, is to revolutionize how our clients tackle complex and evolving challenges by harnessing cutting-edge technology and top-tier talent.Located in the historic Dupont Circle area of Washington, DC, Barbaricum also maintains corporate offices in Tampa, FL, Bedford, IN, and Dayton, OH, with team members working across the nation and globally. As a leader in our industry, we collaborate with private sector firms, academic institutions, and industry associations to continually enhance our expertise and capabilities for the benefit of our employees and clients. Our vibrant corporate culture thrives on diverse expertise and perspectives, emphasizing collaboration and innovation. Join our team to tackle the nation’s most complex and rewarding challenges.The RoleWe are looking for passionate and driven individuals with backgrounds in Systems Administration, Software Development, or Systems Engineering to join us as Information System Security Officers (ISSO). As a member of our team, you will work alongside fellow engineers to enforce security policies, develop standardized security documentation, and provide compliance evidence once security settings are implemented. Your expertise will be invaluable as we rapidly deploy software solutions that meet our customers' most critical needs while maintaining government trust through close stakeholder collaboration and ownership of the Authorization to Operate (ATO) process.

Sep 22, 2025

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Information System Security Officer (ISSO)

Agile Defense

Full-time|On-site|Washington, D.C.

Join Agile Defense as an Information System Security Officer (ISSO) where you will play a crucial role in safeguarding our information systems and ensuring compliance with security policies. You will work closely with teams to identify vulnerabilities, implement security measures, and respond to incidents. Your expertise in information security will be instrumental in protecting sensitive data and enhancing our overall security posture.

Mar 31, 2026

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Information Systems Security Officer (ISSO)

Intellidyne

Full-time|$110K/yr - $110K/yr|On-site|Washington, DC

Information Systems Security Officer (ISSO)Location: Washington, DC (Onsite)Clearance: Top SecretStatus: ExemptSalary: $110,000.00Responsibilities:Collaborate with the IT Security Support Team to manage and operate a comprehensive information systems security program for a U.S. government client.Deliver technical support in vulnerability assessments, risk assessments, network security, product evaluations, security implementations, and remediation efforts.Assist in designing and implementing solutions that ensure the confidentiality, integrity, and availability of sensitive information.Conduct identification, evaluation, investigation, and remediation of cyber and insider threats through technical support and analysis.Evaluate Civil Division systems and recommend enhancements for improved security.Participate in developing information system contingency plans that ensure adequate protection and minimize operational impacts to the Civil Division.Assess current levels of cybersecurity, provide recommendations on risk levels, and train personnel on appropriate cybersecurity protocols.Evaluate security products and recommend technologies and upgrades to bolster the Civil Division systems' security posture.Conduct testing and audit log reviews to assess the efficacy of existing security measures.Engage in the management and accreditation processes of Civil Division systems by evaluating and certifying compliance with FISMA, NIST security guidelines, and departmental policies.

Apr 8, 2026

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Senior Information Systems Security Officer at Accenture Federal Services | Washington, DC

Accenture Federal Services

Full-time|On-site|Washington, DC

Join Accenture Federal Services as a Senior Information Systems Security Officer and play a pivotal role in safeguarding our clients' information systems. In this challenging position, you will be responsible for establishing security protocols, monitoring threats, and implementing strategies to mitigate risks. Your expertise will help enhance our cybersecurity posture and ensure compliance with federal regulations.

Apr 1, 2026

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Information Systems Security Engineer at Palantir | Washington, D.C.

Palantir Technologies Inc.

Full-time|On-site|Washington, D.C.

Join a Transformative CompanyAt Palantir, we develop cutting-edge software that empowers organizations to make data-driven decisions and optimize operations. Our technology is instrumental in a variety of critical sectors, from accelerating drug discovery to enhancing national security, and even reuniting families.Your Role As an Information Systems Security Engineer (ISSE) at Palantir, you will play a pivotal role in ensuring the security and compliance of our IT environments within the US Government sector. With a robust technical background in IT, you will oversee security management and technical administration for our USG facilities. Your responsibilities will involve balancing compliance with operational needs, ensuring that our infrastructure is both secure and scalable to support mission-critical Department of Defense operations. The ideal candidate will possess extensive knowledge of Windows and Linux systems engineering, alongside a solid understanding of government security frameworks, and a passion for creating secure, user-friendly environments.

Apr 8, 2026

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Information Systems Security Officer

Anduril Industries

Full-time|On-site|Seattle, Washington, United States

Join Anduril Industries as an Information Systems Security Officer, where you will play a critical role in safeguarding our information systems and ensuring compliance with security standards. You will be responsible for implementing and maintaining security protocols, conducting risk assessments, and managing incident responses. This position is ideal for detail-oriented professionals passionate about cybersecurity and information protection.

Mar 30, 2026

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Information System Security Officer

Credence Management Solutions

Full-time|On-site|Washington, District of Columbia, United States

Role Overview Credence Management Solutions is seeking an Information System Security Officer (ISSO) in Washington, DC. This position focuses on protecting the organization’s information systems and data. The ISSO develops, implements, and manages security protocols that help maintain the confidentiality, integrity, and availability of sensitive information. Key Responsibilities Create and maintain security protocols for information systems Implement security measures that protect sensitive data Work with IT teams, compliance officers, and other stakeholders to identify and address security risks Support efforts to ensure ongoing compliance with relevant security standards

Apr 16, 2026

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Information Systems Security Officer (ISSO) at Accenture Federal Services | Washington, DC

Accenture Federal Services

Full-time|$147.3K/yr - $182.9K/yr|On-site|Washington, DC

At Accenture Federal Services, our mission is centered on enhancing the strength and safety of the U.S. federal government, while improving the quality of life for citizens. Our talented team of over 13,000 professionals is united by a common goal: to leverage technology and innovation for the benefit of clients in defense, national security, public safety, civilian, and military health sectors. As part of Accenture Federal Services, a division of the global Accenture brand, you will be part of a recognized workplace, frequently listed among Glassdoor's Top 100 Best Places to Work. We pride ourselves on fostering a collaborative and supportive community where employees can thrive, learn, and grow through hands-on experience, certifications, and industry training. Join us in creating positive, lasting transformations that propel government missions forward! As an Information Systems Security Officer (ISSO), you will take on the pivotal role of guiding government clients through the complex journey of obtaining and maintaining Authorization to Operate (ATO) certifications for their information systems.Key Responsibilities:Utilize your knowledge of government cybersecurity standards and regulations to monitor, assess, and respond to potential security incidents and threats.Ensure that our government clients' systems comply with stringent security requirements for ATO, aligning with specific cybersecurity guidelines.Conduct comprehensive security assessments and risk analyses tailored to government compliance, identifying vulnerabilities and potential threats.Monitor security systems, logs, and network traffic with a focus on government cybersecurity protocols, identifying suspicious activities, intrusions, or unauthorized access attempts.Work closely with cross-functional teams to establish and uphold government-compatible security measures, including firewalls, intrusion detection systems, data encryption, and access controls. Investigate security incidents to ascertain their causes, impacts, and appropriate responses.Develop and implement effective incident response plans, encompassing strategies for containment, eradication, and recovery.Here’s what you need to bring to the table:

Feb 3, 2026

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Information System Security Officer (ISSO)

CGS Federal

Full-time|On-site|Washington, DC

Information System Security Officer (ISSO)Employment Type: Full-Time, Mid-LevelDepartment: Administrative and Logistics SupportAs an Information System Security Officer (ISSO) at CGS Federal, you will be an integral part of our mission, working directly on-site with U.S. Government clients to uphold the security and compliance of a production-grade data and application platform utilized in critical mission environments. You will take on the pivotal role of the primary authority for system security and compliance, engaging hands-on with live systems while collaborating closely with engineers, operators, and the customer’s security teams.At CGS, we unite highly motivated, skilled, and innovative individuals to tackle the government’s most pressing challenges with advanced technology. We are looking for candidates who are eager to drive government innovation, value teamwork, and can intuitively understand the needs of others. Our supportive environment encourages professional development through numerous learning opportunities.Key Responsibilities:- Serve as the main on-site contact for security and compliance requirements across various U.S. Government clients.- Facilitate system accreditation and authorization efforts using frameworks such as Risk Management Framework (RMF) or Defense Information Assurance Certification and Accreditation Process (DIACAP).- Collaborate with software, systems, and field engineers to ensure proper implementation of mandatory security controls, configurations, and policies.- Evaluate deployed software solutions and ensure compliance with relevant security criteria.- Develop, standardize, and maintain essential security documentation, including System Security Plans (SSPs), Plans of Action and Milestones (POA&Ms), control narratives, and supporting materials.- Generate, verify, and categorize evidence of compliance following security settings application.- Organize accreditation artifacts into a systematic, auditable repository.- Assist with audits, assessments, and ongoing compliance activities throughout the system lifecycle.- Ensure continuous security and trust of clients through proactive system access and coordination with engineering teams.

Feb 10, 2026

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Lead Information Systems Security Officer (ISSO) at True Zero Technologies | Washington DC

True Zero Technologies

Full-time|On-site|Washington DC

True Zero Technologies, a veteran-owned small business, is dedicated to the meaningful integration of people and technology, which we believe is directly linked to the quality of outcomes achieved by organizations. Our commitment to our workforce is paramount; we have cultivated a community of passionate innovators who strive to deliver exceptional services to our clients. In 2023, we were honored with the title of “Best Places to Work” in two categories: "Prosperous and Thriving" and "Mid-Atlantic Region". Additionally, in 2022, we were proud to be listed among Inc. Magazine’s Top 5000 Fastest Growing Companies.As the Information Systems Security Officer (ISSO) Lead, you will be the key advisor to the Information System Owner (ISO), the Business Process Owner, and the Chief Information Security Officer (CISO) / Information System Security Manager (ISSM) on all technical and operational matters concerning the security of their designated information systems. Your expertise will be crucial in fortifying our security posture and ensuring compliance with relevant regulations.

Mar 5, 2025

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Information Systems Security Officer (ISSO) at CGS Federal | Washington, DC

CGS Federal

Full-time|On-site|Washington, DC

CGS Federal is actively seeking a dedicated Information Systems Security Officer (ISSO) with extensive knowledge in DIACAP and/or RMF methodologies to support the Department of Commerce in securing their systems and facilitating their Authorization to Operate (ATO) processes. This dynamic role, based at the prestigious Herbert Hoover building in Washington, DC, encompasses comprehensive life-cycle Assessment and Authorization (A&A) management through all six steps of the RMF process.As an ISSO, you will conduct thorough security assessments and oversee information system security activities, ensuring compliance with NIST standards, particularly NIST 800.53. Your expertise will be critical in identifying potential security weaknesses, recommending necessary improvements, and maintaining cybersecurity risk management at an organizational level.At CGS Federal, we pride ourselves on bringing together motivated and highly skilled individuals who are passionate about solving the government's most pressing challenges using innovative technology. We foster an inclusive environment that encourages professional growth and collaboration, making it an exciting place to advance your career.

Mar 6, 2026

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Information Systems Security Representative

smxtech

Full-time|On-site|Washington, DC

Role Overview smxtech is seeking an Information Systems Security Representative in Washington, DC. This position focuses on protecting company information systems and supporting compliance with relevant standards and regulations. What You Will Do Collaborate with teams across the organization to identify security vulnerabilities Implement security controls and measures to protect sensitive data Monitor systems for threats and respond to potential security incidents Support efforts to maintain data integrity and confidentiality

Apr 13, 2026

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Information Systems Security Engineer at Spry Methods | Washington, DC

Spry Methods

Full-time|On-site|Washington, DC

Position Overview:Join Spry Methods as an Information Systems Security Engineer (ISSE) and play a vital role in enhancing the security of mission-critical information systems within a dynamic government environment. You will be instrumental in designing, implementing, and managing cybersecurity controls across both enterprise and mission systems. Collaborating closely with engineering, operations, and security teams, you will ensure compliance with federal cybersecurity standards and authorization requirements.

Dec 16, 2025

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Mid-Level Cartographer at Ardent | Washington, D.C. Metro

Ardent Management Consulting

Full-time|On-site|Washington, D.C. Metro

At Ardent, we believe you shouldn't have to sacrifice meaningful work for a fulfilling life. Our team is dedicated to tackling our clients' toughest challenges while nurturing the well-being, personal aspirations, and professional growth of our employees. We are "All In"—committed to achieving our mission together, valuing the expertise you bring, and fostering a supportive environment for your success.We provide competitive benefits, opportunities for professional development, and a vibrant culture that promotes flexibility, innovation, collaboration, and career advancement. Our commitment to a service-oriented mindset and a shared camaraderie to serve clients, colleagues, and communities distinguishes us. If this resonates with you, join us at Ardent and make a positive impact.Position Overview:We are currently seeking a Mid-Level Cartographer to take on the role of senior cartographic lead, overseeing the entire geospatial data lifecycle. The ideal candidate will possess substantial experience in geospatial data management, spatial analysis, and cartographic production to support DHS/CBP mission objectives.

Feb 10, 2026

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Mid-Level Information System Security Officer

Agile Defense, Inc.

Full-time|On-site|Washington, D.C.

Join Agile Defense, Inc. as a Mid-Level Information System Security Officer (ISSO). In this pivotal role, you will be responsible for safeguarding our information systems and ensuring compliance with security policies and procedures. You will work alongside a talented team to develop and implement security measures that protect our data and technology assets.

Mar 31, 2026

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Cleared Information Systems Security Engineer

smxtech

Full-time|On-site|Washington, DC

Role Overview smxtech is seeking a Cleared Information Systems Security Engineer in Washington, DC. This position focuses on protecting and maintaining the security of information systems. The engineer will play a key role in keeping systems secure and resilient. What You Will Do Design and implement security protocols for information systems Monitor system activity to detect and respond to potential threats Work to maintain the integrity, confidentiality, and availability of sensitive information Location Washington, DC

Apr 13, 2026

Mid-Level Information System Security Officer

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