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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 …

Mar 5, 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 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 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 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 Security Architect at True Zero Technologies | Washington DC

True Zero Technologies

Full-time|On-site|Washington DC

Join True Zero Technologies, a proud veteran-owned small business dedicated to the meaningful integration of people and technology. We believe that the success of any organization is deeply rooted in the strengths and capabilities of its workforce. Our team comprises passionate and innovative individuals who share a common vision of delivering exceptional services to our clients. Our commitment to fostering a positive work culture has earned us numerous accolades, including recognition as one of the Best Places to Work in 2023 across two categories: “Prosperous and Thriving” and “Mid-Atlantic Region”. We were also honored on the Inc. 5000 list of America’s fastest-growing companies in 2022, 2023, and 2025. This recognition reflects our sustained growth driven by our unwavering dedication to excellence and a people-first approach.

Mar 25, 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 Systems Security Officer (ISSO) Team Lead

Anavation LLC

Full-time|On-site|Washington, DC

Join our dynamic team at Anavation LLC as an Information Systems Security Officer (ISSO) Team Lead. In this pivotal role, you will oversee and enhance our cybersecurity protocols, guiding a dedicated team of professionals to protect sensitive information and ensure compliance with federal regulations. Your leadership will be crucial in developing strategies that address current and emerging threats in our digital landscape.

Apr 1, 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 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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Penetration Test Engineer III at True Zero Technologies | Washington DC

True Zero Technologies

Full-time|On-site|Washington DC

Join True Zero Technologies, a distinguished veteran-owned small business, dedicated to the strategic integration of technology and human potential to enhance organizational success. We believe that our achievements are fueled by our community of passionate, driven individuals committed to delivering outstanding services to our clients. Recognized as a "Best Places to Work" in 2023 in both the "Prosperous and Thriving" and "Mid-Atlantic Region" categories, and featured in Inc. Magazine's Top 5000 Fastest Growing Companies in 2022, we are looking for talented professionals to join our dynamic team.

Mar 5, 2025

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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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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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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 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 growth of our employees. Together, we are 'All In'—committed to accomplishing our mission while supporting one another.We provide competitive benefits, ample opportunities for professional development, and a vibrant culture that values flexibility, innovation, collaboration, and career advancement. Our commitment to service excellence and camaraderie distinguishes us as a leading employer. If this resonates with you, consider joining Ardent and making a difference with us.Position Overview: We are currently seeking an Information Systems Security Officer (ISSO) to enhance our team.This is a hybrid role (3 days/week) based in Ashburn, VA. Future requirements may necessitate full-time onsite presence (5 days/week) at our Ashburn office.Position Description: The ISSO will ensure compliance with federal cybersecurity standards, protect sensitive information, and manage risk for both classified and unclassified systems. Responsibilities include developing and implementing security policies, conducting audits, and collaborating with stakeholders to support critical operations.

Feb 10, 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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Audit & Information System Security Officer (ISSO)

Accenture Federal Services

Full-time|On-site|Washington, DC

Accenture Federal Services seeks an Audit & Information System Security Officer (ISSO) based in Washington, DC. This role focuses on protecting information systems by managing audit security, evaluating risks, and applying safeguards to keep sensitive data secure. Key responsibilities Maintain the security of audit systems and related processes Conduct risk assessments to find potential vulnerabilities Implement and monitor security measures that protect confidential information Support compliance with federal regulations and industry standards Location This position is based in Washington, DC.

Apr 22, 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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Proposal Writer at True Anomaly | Washington, DC

True Anomaly, Inc.

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

A new era of space exploration has commenced! True Anomaly is on the lookout for talented and driven individuals to create groundbreaking technology that addresses the engineering, manufacturing, and operational challenges of space security and sustainability.OUR MISSIONEnsuring the peaceful utilization of space is vital for the ongoing prosperity of life on Earth—impacting everything from communications and finance to navigation and logistics. At True Anomaly, we develop innovative technology that merges spacecraft, software, and AI, enhancing the capabilities of the U.S., its allies, and commercial partners. Our commitment is to safeguard global security by promoting sustainable access to space for everyone.OUR VALUESBe the offset. We create asymmetric advantages through creativity and ingenuity.What would it take? We challenge assumptions to achieve ambitious results.It’s the people. Our team is our competitive edge; together, we are stronger.YOUR MISSIONAs a key member of the Proposal team, you will play an essential role in driving True Anomaly’s growth and revenue generation. Working within a dynamic start-up environment, you will collaborate with account leads from the business development team and technical teams to craft compelling content that caters to a variety of use cases across the acquisition lifecycle—from early-stage capture and sales enablement to advanced proposal artifacts (RFx). Your ability to translate complex technical language into accessible customer-friendly content will be crucial in delivering high-quality artifacts that support our business objectives. As an effective communicator, detail-oriented professional, and creative writer, you will transform intricate technical concepts into persuasive RFx documents, white papers, and more. By understanding customer needs, you will produce content tailored to their unique requirements. We seek mission-driven teammates who are eager to dive into diverse writing projects and deliver top-notch outputs within tight deadlines.

Feb 23, 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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