Information Systems Security Engineer (ISSE)

Information Systems Security Engineer (ISSE) Mantis Security is a leading specialty firm of high‑caliber talent who specialize in Cyber Operations, Cyber Defense, Information Assurance, Software Development, DevSecOps, Security Engineering, and Cloud Engineering. We enable and protect our nation's most important IT assets and invest in the long‑term career development of every employee! We are currently looking for an Information Systems Security Engineer (ISSE) to join our team of experts! As an ISSE on the Mantis Security Team, you will define information security requirements and their integration into information systems and its technology component through purposeful security design. What You’ll Be Doing: Develop and implement security designs to ensure that the hardware, operating systems and software applications adequately address cyber security requirements and the Security Controls Traceability Matrix (SCTM). Identify points of vulnerability, non‑compliance with established Information Assurance (IA) standards and regulations, and recommend mitigation strategies. Implement, validate Security Technical Implementation Guide (STIG) requirements and/or perform SRG assessments for all development and implementation projects. Develop, customize, and configure Splunk applications and dashboards. Develop Security Test Procedures (STP), conduct self‑assessments to verify compliance with required configuration guidance, and support A&A testing and validation of security designs. Conduct risk analysis reviewing ACAS, CVEs, plugins, CWEs, research, and collaborate with System Administrators to mitigate identified vulnerabilities and/or author Plans of Actions and Milestones (PO&AM) as needed. Execute continuous monitoring efforts, respond to data calls, scan requests, and various weekly and monthly security metrics reporting requirements. Validate control implementations to enforce the required data access and network flow restrictions that align with the continuous monitoring strategy. Participate in Agile Planning Events to provide technical input. Support government activities and reporting to appropriate IC and DoD authorities (i.e., USCYBERCOM, IC‑SCC). Support security authorization activities in compliance with the customer Information System Certification and Accreditation Process following the NIST Risk Management Framework (RMF), CNSSI No1243 and other prescribed business processes for security engineering. Assist architects and system developers in the identification and implementation of appropriate information security functionality to ensure uniform application of Agency security policy and enterprise solutions. Apply system security engineering expertise in one or more of the following areas: system security design process; engineering life cycle; information domain; cross domain solutions; commercial off‑the‑shelf and government off‑the‑shelf cryptography; identification; authentication; and authorization; system integration; risk management; intrusion detection; contingency planning; incident handling; configuration control; change management; auditing; certification and accreditation process; principles of IA (confidentiality, integrity, non‑repudiation, availability, and access control); and security testing. Must Haves: US Citizen. 8 years of relevant experience and a Bachelor’s degree in Computer Science, Information Assurance, Information Security System Engineering, or related discipline from an accredited college or university. A Master’s degree may be substituted for two (2) years of additional experience. Four (4) years of additional ISSE experience may substitute for a bachelor’s degree. DoD 8570 compliance with IASAE Level3. Three (3) years of experience in scripting languages, Linux/RedHat, and/or Networking Appliances. Information Systems Security Engineering Professional (ISSEP) and CISSP Certifications. Active TS/SCI security clearance with the ability to obtain polygraph. Nice to Haves: Skill in implementing mitigation strategies, resolving problems, and re‑testing or re‑evaluating systems. Experience with DISA Security Technical Implementation Guide (STIG) implementation and Security Content Automation Protocol (SCAP) tool usage. Working knowledge of administering servers, system and application security threats and vulnerabilities. Experience extending existing applications in areas such as security, monitoring, task automation, continuous integration, deployment, and performance optimization. Demonstrated writing of scripting/programming projects (Shell scripting, Python, JavaScript, PowerShell) in Linux or Windows environments to support Cyber Security tools and applications required. Guidance on vulnerability and malware remediation. Experience analyzing vulnerabilities, establishing cause and impact, and identifying corrective actions needed to eliminate and prevent the event from happening in the future. We believe that our strength is in our employees. We offer employees the chance to work with great people on projects of high importance and are committed to providing the best culture that fosters technical innovation and personal growth. To help our staff achieve a productive work‑life balance, we offer a full range of highly competitive benefits for our employees and their families. For more information, visit #J-18808-Ljbffr