DescriptionInformation Systems Security Officer (ISSO) (1 Position)TEKsystems is seeking an Information Systems Security Officer (ISSO) to support the authorization and ongoing security of mission applications, cloud infrastructure, and enterprise core services. The ISSO will work with Government security personnel, software developers, and infrastructure engineers to maintain security documentation, assess risk, and ensure systems meet applicable Department of Defense and Intelligence Community requirements.This role requires someone who can connect security requirements to how systems are built and operated. Candidates should be comfortable reviewing technical evidence, investigating compliance gaps, and working with engineers to resolve findings as software, infrastructure, and system configurations change.This is a full-time, on-site role at a Government facility in Charleston SC or the National Capital Region (NCR).What Youll Do Support Risk Management Framework (RMF) activities to obtain and maintain Authority to Operate (ATO) for systems across applicable classification levels. Develop and maintain authorization documentation, including System Security Plans (SSPs), security control implementation statements, system boundary descriptions, and supporting evidence. Coordinate with system owners, Information System Security Managers (ISSMs), assessors, and engineering teams to prepare authorization packages and resolve assessment findings. Maintain Plans of Action and Milestones (POA&Ms), track remediation progress, and communicate unresolved risks and dependencies. Use the DISA Enterprise Mission Assurance Support Service (eMASS) to maintain authorization records, security control documentation, assessment evidence, and remediation status, as applicable. Review Assured Compliance Assessment Solution (ACAS) scan results, security configuration assessments, and application security testing reports; work with technical teams to prioritize and validate remediation. Assess the security impact of software releases, infrastructure changes, new integrations, and changes to the authorization boundary. Support continuous monitoring by maintaining current security evidence, reviewing control effectiveness, and reporting changes in system risk. Work with cloud and DevSecOps engineers to incorporate security requirements and evidence collection into development and deployment workflows. Review access controls, privileged access, audit logging, configuration baselines, and protection of sensitive data. Support security incident reporting, investigation, corrective actions, and updates to relevant documentation and procedures. Apply appropriate security overlays and support supply chain risk management activities. Prepare security status reports and brief Government stakeholders on authorization progress, findings, and remediation priorities.Basic Qualifications Bachelors degree in a technical or managerial discipline Five (5) or more years of practical experience in cybersecurity, engineering, Test and Evaluation (T&E), or Assessment and Authorization (A&A), formerly Certification and Accreditation (C&A). In lieu of a college degree, a high school diploma or high school equivalency certificate and more than seven (7) years of practical experience in the fields listed above. Active Top Secret/Sensitive Compartmented Information (TS/SCI) clearance with a Counterintelligence (CI) Polygraph. Prior experience supporting the Intelligence Community. Experience using information assurance tools, including eMASS and ACAS. Experience performing ISSO duties or comparable information systems security and authorization responsibilities. Experience supporting RMF activities and developing or maintaining system authorization packages. Experience documenting security control implementation, collecting assessment evidence, and tracking findings through resolution. Understanding of applicable Department of War and Intelligence Community security requirements and assessment processes. Experience reviewing vulnerability assessments and security configuration findings and coordinating remediation with technical personnel. Understanding of system boundaries, data flows, access controls, audit logging, configuration management, and continuous monitoring. Ability to assess the security implications of system changes and explain risks to technical and nontechnical stakeholders. Strong technical writing, organizational, and communication skills. Ability to meet applicable cybersecurity workforce qualification requirements for the assigned position. A Full Security Control Assessor qualification may also be required, depending on assigned duties.Desired Qualifications Meet DoD 8140 / 8570 IAM Level II or III baseline requirements (such as CISSP, CISM, CAP/ISC2 CGRC). IC authorization experience: Experience supporting authorization activities under Intelligence Community Directive (ICD) 503 and applicable agency guidance. Cloud security: Experience assessing Amazon Web Services (AWS) or AWS GovCloud environments, including deployments subject to Department of Defense Impact Level 5 requirements. Container platforms: Familiarity with Kubernetes and Red Hat OpenShift security considerations, including workload isolation, access controls, image security, and logging. DevSecOps: Experience using automated security testing results and deployment records as evidence supporting assessment and continuous monitoring. Security assessments: Experience applying Security Technical Implementation Guides (STIGs), validating configuration compliance, and supporting security control assessments. Identity and data protection: Familiarity with Identity, Credential, and Access Management (ICAM), Public Key Infrastructure (PKI), certificate management, encryption, and secrets management. Zero Trust: Experience assessing controls involving identity, devices, networks, applications, and data. Relevant certifications: Certified in Governance, Risk and Compliance (CGRC), Certified Information Systems Security Professional (CISSP), or comparable credentials.SkillsInformation security, Top secret clearance, Continuous integration, IL5, Risk management, Cyber security, Rmf, Security, Nist, Compliance, Security policy, Risk assessment, EmassTop Skills DetailsInformation security,Top secret clearance,Continuous integration,IL5,Risk management,Cyber security,Rmf,Security,NistAdditional Skills & QualificationsBasic Qualifications Bachelors degree in a technical or managerial discipline Five (5) or more years of practical experience in cybersecurity, engineering, Test and Evaluation (T&E), or Assessment and Authorization (A&A), formerly Certification and Accreditation (C&A). In lieu of a college degree, a high school diploma or high school equivalency certificate and more than seven (7) years of practical experience in the fields listed above. Active Top Secret/Sensitive Compartmented Information (TS/SCI) clearance with a Counterintelligence (CI) Polygraph. Prior experience supporting the Intelligence Community. Experience using information assurance tools, including eMASS and ACAS. Experience performing ISSO duties or comparable information systems security and authorization responsibilities. Experience supporting RMF activities and developing or maintaining system authorization packages. Experience documenting security control implementation, collecting assessment evidence, and tracking findings through resolution. Understanding of applicable Department of War and Intelligence Community security requirements and assessment processes. Experience reviewing vulnerability assessments and security configuration findings and coordinating remediation with technical personnel. Understanding of system boundaries, data flows, access controls, audit logging, configuration management, and continuous monitoring. Ability to assess the security implications of system changes and explain risks to technical and nontechnical stakeholders. Strong technical writing, organizational, and communication skills. Ability to meet applicable cybersecurity workforce qualification requirements for the assigned position. A Full Security Control Assessor qualification may also be required, depending on assigned duties.Experience LevelIntermediate Level Job Type & LocationThis is a Contract position based out of Herndon, VA. Pay and BenefitsThe pay range for this position is $70.00 - $127.00/hr. Individual compensation offered for this position within this range will depend on many factors, including qualifications, skills, relevant experience, job knowledge, geographic location, internal equity, and other pertinent job-related factors.Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits
available for this temporary role may include the following:
Medical, dental & vision Critical Illness, Accident, and Hospital 401(k) Retirement Plan Pre-tax and Roth post-tax contributions available Life Insurance (Voluntary Life & AD&D for the employee and dependents) Short and long-term disability Health Spending Account (HSA) Transportation benefits Employee Assistance Program Time Off/Leave (PTO, Vacation or Sick Leave) Job Type & LocationThis is a Contract position based out of Herndon, VA. Application DeadlineThis position is anticipated to close on Nov 17, 2026. Workplace TypeThis is a fully onsite position in Herndon,VA.
About TEKsystems
We're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change. That's the power of true partnership. TEKsystems is an Allegis Group company.
The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.
About TEKsystems and TEKsystems Global Services
Were a leading provider of business and technology services. We accelerate business transformation for our customers. Our expertise in strategy, design, execution and operations unlocks business value through a range of solutions. Were a team of 80,000 strong, working with over 6,000 customers, including 80% of the Fortune 500 across North America, Europe and Asia, who partner with us for our scale, full-stack capabilities and speed. Were strategic thinkers, hands-on collaborators, helping customers capitalize on change and master the momentum of technology. Were building tomorrow by delivering business outcomes and making positive impacts in our global communities. TEKsystems and TEKsystems Global Services are Allegis Group companies. Learn more at TEKsystems.com.
The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.
San Francisco Fair Chance Ordinance: Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.
Massachusetts Lie Detector: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.
Use of Artificial Intelligence (AI): We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.
