> Markdown version of [/jobs/ext/737220-information-system-security-officer-senior](https://www.wearedevelopers.com/jobs/ext/737220-information-system-security-officer-senior). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Information System Security Officer - Senior - **Company:** Amentum Services, Inc. - **Location:** Warrenton, VA, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Microsoft Word, Microsoft Excel, Microsoft Windows, Data Analysis, Microsoft Outlook, Cluster Analysis, Cyber Security, Information Systems, Information Leak Prevention, Database Queries, Linux, Information Security Management, Microsoft Visio, Systems Development Life Cycle, Red Hat Enterprise Linux, Ansible, EPolicy Orchestrator, Microsoft SharePoint, Software Deployment, Systems Integration, Tripwire, Software Troubleshooting, SC Clearance, Forescout, Vcenter, Nessus, Operational Systems, Nutanix, Splunk, Vmware - **Published:** June 29, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9001957/information-system-security-officer-senior ## About the Role * Must have active Top-Secret clearance with SCI or TS with the ability to acquire SCI * Experience in Splunk role while working in a Splunk Clustered Environment * Knowledge and experience with NESSUS/ACAS and Trellix administration * Must be able to work a 40-hour work week, normally Monday through Friday. * Ability to work overtime during critical peaks and be available to meet last-minute requests for overtime if needed. * Ability to travel (5-10%) primarily within 75 miles. * Familiarity with MS Office applications such as Excel, Word, Outlook, SharePoint, Project, and Visio. * Exceptional attention to detail; excellent verbal and written communication skills; strong critical thinking, organizational, time-management, and problem-solving skills. * Ability to work both independently and as part of a team in a dynamic environment. Clearance Required: * Must have active Top-Secret clearance with SCI or TS with the ability to acquire SCI Minimum Education: * Bachelor's Degree in a related field (Cyber and/or Engineering) Minimum Years of Experience: * 10 years of relevant experience Required Certifications: * Must possess, or be able to obtain, one of the following 8140 IAT Level II or III baseline certifications before a start date: o Level II certs include - CCNA Security, GISCP, GSEC, Security+ CE, SSCP o Level III certs include - CASP CE, CCNP Security, CISA, CISSP (or Associate), GCED, GCIH Preferred: * Ability to work within VMWare, VCenter, and Nutanix building Red Hat systems * Configure, operate, and maintain ForeScout, Tripwire and Ivanti tool suites * Possess understanding and experience with common cybersecurity toolsets and processes to include STIGS, IAVA Management and Implementation, and OPORD/FRAGO support * Demonstrated experience in analysis simulation environment, configuration/troubleshooting software/hardware enhancements, application deployments, and infrastructure upgrades in a dynamic information system hosting environment * Proficiency with Red Hat/Linux * Managing Red Hat Satellite/Ansible * At least one of the following certifications is preferred: o Splunk Core Certified Advanced Power User ## Description * Experience creating custom dashboards, writing queries, building, and generating reports, and setting up alerts and notifications using all the Cyber tools (Splunk, Tenable, Trellix). * Demonstrated proficiency with recognizing and onboarding new data sources into the cyber tools and analyzing the data for anomalies and trends. * Primarily responsible for maintaining the test and operational environments to include all cybersecurity tool sets and collaborating with systems and network engineers. * Use knowledge, skills, and ability to conduct research for designing, integrating, and implementing security controls into current and future products/systems thus ensuring these systems can be accredited based on compliance with the Joint Special Access Program Implementation Guide (JSIG). * Recommend the components to implement system security requirements using intimate knowledge of security design best practices for information systems. throughout the system development life cycle to support the generation of the security engineering products. * Assist with the design, deployment, and administration of a multi-site, distributed Splunk environment. Including Multi-site Clustering, Search Head Clustering, Universal Forwarders, Deployer, and Deployment Server. * Configure, operate, and maintain Trellix and its components (ePolicy Orchestrator, Trellix Agent, Data Loss Prevention, Host Intrusion Prevention System, Policy Auditor, Asset Baseline Monitor, and Virus Scan Enterprise) on Windows and Linux creating exceptions to allow essential processes to continue uninterrupted. * Administration/operation of information security compliance tools/platforms with a special concentration in managing Tenable Security Center and NESSUS. * Provide Tier 1, 2, and 3 maintenance support for deployed cyber security technologies. * Assist with periodic and regular security assessments. * Assist with the development and maintenance of information security policies, standards, and control procedures to enable compliance with RMF. * Assist with POA&M management, mitigation statement formulation, and interfacing with system administrators to resolve open findings of high and at-risk systems. * Perform security assessments on hardware/software products to include physical, virtual, boundary, and security appliances. * Implement continuous monitoring tools and processes, development of improvements to security assessments regarding accuracy and efficiency as well as integration of new techniques to improve the confidentiality - integrity - availability of network/operational systems at multiple classifications levels. ## Related Videos - [Our journey with Spring Boot in a microservice architecture](https://www.wearedevelopers.com/videos/511-our-journey-with-spring-boot-in-a-microservice-architecture) - [WebAssembly: The Next Frontier of Cloud Computing](https://www.wearedevelopers.com/videos/972-webassembly-the-next-frontier-of-cloud-computing) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [Generating code with Angular schematics](https://www.wearedevelopers.com/videos/129-generating-code-with-angular-schematics) - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) ## Related Articles - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [9 Ways to Make Money Hacking](https://www.wearedevelopers.com/magazine/333-9-ways-to-make-money-hacking) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing) - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers)