{"schemaVersion":"jobsearcher.job.v1","id":"d807fd7479182c28c112e08e","url":"https://jobsearcher.com/jobs/d807fd7479182c28c112e08e","canonicalUrl":"https://jobsearcher.com/jobs/d807fd7479182c28c112e08e","title":"Information Systems Security Engineer - Level 1","description":"Job Description\n\nMaintain and optimize the Tenable Security Center infrastructure.\nConduct regular security patching, assessments and scans on Linux Security Center servers using\nTenable Nessus.\nMitigate STIGS/Vulnerabilities on Tenable Linux Security Center Servers and Windows/Linux\nNessus Scanning Servers.\nInstall and update Tenable Nessus Software on Linux/Windows Scanning Servers.\nInstall and update Tenable Security Center Software on Linux Servers.\nConfigure and fine-tune scanning policies and asset lists to ensure thorough vulnerability\ncoverage.\nKeep abreast of the latest Tenable Security Center features and updates.\nPerform regular vulnerability assessments of multiple device types and Operating Systems using\nTenable Security Center.\nUtilize Nessus Scanning Tool to identify vulnerabilities across customer assets on a Continuous\nMonitoring basis.\nReview Nessus/ACAS scan results and provide direction where required.\nRecognizes potential, successful, and unsuccessful scan results for efficiency in reporting\ncompromises thorough reviews and analyses of relevant event detail and summary information.\nAnalyze scan results and generate comprehensive vulnerability reports.\nMonitor and track vulnerability remediation progress.\nCollaborate with ISS and other teams to ensure timely vulnerability remediation.\nCommunicate effectively with stakeholders about the security posture and potential risks.\nPrepare and deliver clear and concise reports to management and stakeholders.\nMaintain accurate records of security incidents and vulnerabilities\n,\nRequired Skills\n\nFamiliarity with DISA STIGs, Tenable Audit files, and / or CIS Benchmarks\nHands-on operational experience with enterprise vulnerability management and scanning solutions,\nsuch as Tenable\nKnowledge of system and application security threats and vulnerabilities\nWorking knowledge of networking, Linux/Unix, Windows administration, patch deployment and\nsystem configuration\n\nCerts: IAT Level 2 (CEH, CompTIA Security + CE)\n\nBS and 7 years exp OR HS and 11 years of exp\n\n,\nDesired Skills\n\nIn-depth knowledge of vulnerability assessment methodologies, tools, and best practices\nSelf-starter, ability to work effectively both independently and as part of a team including the ability\nand desire to own every aspect of a task from start to finish\nStrong analytical and problem-solving abilities, with a keen attention to detail\n\n,\nAbout Castello Systems, Inc.\n\nAt Castello Systems, we are focused on delivering solutions. One way we do this is through the integration of COTS products into our customer's enterprise. We are successful because we are experts in the tools we integrate and are experts in the intricacies of our customer’s enterprise. Many of our peers fail because they are not able to bring these two components together. When Castello Systems is brought in, our folks have access to all the resources across the company and through our partnerships with COTS vendors. When you have one of us, you have all of us. Castello Systems prefers completion based contracts. This gives us the flexibility to bring to bear the right level of expertise and when needed to deliver. Castello Systems specialize in architecting, implementing, and executing Enterprise Management through the use of industry leading technologies such as OpenText Software, Splunk, and Elastic Stack.","company":"Castello Systems","rawCompany":"castello systems","city":"Annapolis Junction","state":"MD","isRemote":false,"isActive":false,"createdAt":"2026-09-01T10:39:35.690Z","occupations":[{"code":"15-1299.05","title":"Information Security Engineers","slug":"information-security-engineers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1212.00","title":"Information Security Analysts","slug":"information-security-analysts"}],"industries":[{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"541519","title":"Other Computer Related Services","slug":"other-computer-related-services"},{"code":"561621","title":"Security Systems Services (except Locksmiths)","slug":"security-systems-services-except-locksmiths"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Information Systems Security Engineer - Level 1","description":"Job Description\n\nMaintain and optimize the Tenable Security Center infrastructure.\nConduct regular security patching, assessments and scans on Linux Security Center servers using\nTenable Nessus.\nMitigate STIGS/Vulnerabilities on Tenable Linux Security Center Servers and Windows/Linux\nNessus Scanning Servers.\nInstall and update Tenable Nessus Software on Linux/Windows Scanning Servers.\nInstall and update Tenable Security Center Software on Linux Servers.\nConfigure and fine-tune scanning policies and asset lists to ensure thorough vulnerability\ncoverage.\nKeep abreast of the latest Tenable Security Center features and updates.\nPerform regular vulnerability assessments of multiple device types and Operating Systems using\nTenable Security Center.\nUtilize Nessus Scanning Tool to identify vulnerabilities across customer assets on a Continuous\nMonitoring basis.\nReview Nessus/ACAS scan results and provide direction where required.\nRecognizes potential, successful, and unsuccessful scan results for efficiency in reporting\ncompromises thorough reviews and analyses of relevant event detail and summary information.\nAnalyze scan results and generate comprehensive vulnerability reports.\nMonitor and track vulnerability remediation progress.\nCollaborate with ISS and other teams to ensure timely vulnerability remediation.\nCommunicate effectively with stakeholders about the security posture and potential risks.\nPrepare and deliver clear and concise reports to management and stakeholders.\nMaintain accurate records of security incidents and vulnerabilities\n,\nRequired Skills\n\nFamiliarity with DISA STIGs, Tenable Audit files, and / or CIS Benchmarks\nHands-on operational experience with enterprise vulnerability management and scanning solutions,\nsuch as Tenable\nKnowledge of system and application security threats and vulnerabilities\nWorking knowledge of networking, Linux/Unix, Windows administration, patch deployment and\nsystem configuration\n\nCerts: IAT Level 2 (CEH, CompTIA Security + CE)\n\nBS and 7 years exp OR HS and 11 years of exp\n\n,\nDesired Skills\n\nIn-depth knowledge of vulnerability assessment methodologies, tools, and best practices\nSelf-starter, ability to work effectively both independently and as part of a team including the ability\nand desire to own every aspect of a task from start to finish\nStrong analytical and problem-solving abilities, with a keen attention to detail\n\n,\nAbout Castello Systems, Inc.\n\nAt Castello Systems, we are focused on delivering solutions. One way we do this is through the integration of COTS products into our customer's enterprise. We are successful because we are experts in the tools we integrate and are experts in the intricacies of our customer’s enterprise. Many of our peers fail because they are not able to bring these two components together. When Castello Systems is brought in, our folks have access to all the resources across the company and through our partnerships with COTS vendors. When you have one of us, you have all of us. Castello Systems prefers completion based contracts. This gives us the flexibility to bring to bear the right level of expertise and when needed to deliver. Castello Systems specialize in architecting, implementing, and executing Enterprise Management through the use of industry leading technologies such as OpenText Software, Splunk, and Elastic Stack.","datePosted":"2026-09-01T10:39:35.690Z","dateModified":"2026-09-01T10:39:35.690Z","hiringOrganization":{"@type":"Organization","name":"Castello Systems","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Annapolis Junction","addressRegion":"MD","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"d807fd7479182c28c112e08e"},"url":"https://jobsearcher.com/jobs/d807fd7479182c28c112e08e"}}