Linux Security Engineer Jobs in Riverview, FL (NOW HIRING)

Barbaricum is a rapidly growing government contractor providing leading-edge support to federal customers, with a particular focus on Defense and National Security mission sets. We leverage more than 17 years of support to stakeholders across the federal government, with established and growing capabilities across Intelligence, Analytics, Engineering, Mission Support, and Communications disciplines. Founded in 2008, our mission is to transform the way our customers approach constantly changing and complex problem sets by bringing to bear the latest in technology and the highest caliber of talent. Headquartered in Washington, DC’s historic Dupont Circle neighborhood, Barbaricum also has a corporate presence in Tampa, FL, Bedford, IN, and Dayton, OH, with team members across the United States and around the world. As a leader in our space, we partner with firms in the private sector, academic institutions, and industry associations with a goal of continually building our expertise and capabilities for the benefit of our employees and the customers we support. Through all of this, we have built a vibrant corporate culture diverse in expertise and perspectives with a focus on collaboration and innovation. Our teams are at the frontier of the Nation’s most complex and rewarding challenges. Join our team. Barbaricum is seeking a Journeyman Cyber Security Engineer (Microsoft) to support the U.S. Special Operations Command (USSOCOM) Enterprise Development, Application and Training (EDAT) Zero Trust initiative. This position provides engineering and operational support for Microsoft’s enterprise security platform, helping implement and maintain Zero Trust security capabilities across identity, endpoint, data, and security operations. The Journeyman Cyber Security Engineer will support the integration of Microsoft security technologies—including Microsoft Sentinel, Microsoft Defender, Microsoft Purview, Microsoft Entra ID, Logic Apps, and Behavior Analytics—to strengthen the Department of Defense (DoD) Visibility and Analytics pillar while enabling security automation and orchestration. Working alongside senior engineers and cybersecurity professionals, this role supports engineering, operational, and RMF activities that improve the organization’s security posture. Please note, an Active Top Secret (TS) clearance with SCI eligibility is required prior to start. Key Responsibilities * Support the implementation, configuration, and maintenance of Microsoft security technologies within the Zero Trust architecture. * Assist with deployment and administration of Microsoft Sentinel, Microsoft Defender, Microsoft Purview, Microsoft Entra ID, Logic Apps, and related Microsoft security services. * Configure and tune analytics rules, workbooks, dashboards, alerts, and automation workflows to improve threat detection and response. * Support User and Entity Behavior Analytics (UEBA) and Security Orchestration, Automation, and Response (SOAR) capabilities using Microsoft security platforms. * Assist with integrating security telemetry from Microsoft and third-party enterprise systems. * Collaborate with ISSOs, cybersecurity engineers, system administrators, and government stakeholders supporting the Zero Trust initiative. * Support RMF activities, including documentation updates, implementation of security controls, and maintenance of Authorization to Operate (ATO) artifacts. * Assist with vulnerability assessments, system hardening, and implementation of DISA Security Technical Implementation Guides (STIGs). * Troubleshoot Microsoft security platform issues and assist with resolving operational challenges. * Participate in cybersecurity investigations, incident response, and security monitoring activities. * Document engineering procedures, technical configurations, and operational processes. * Recommend improvements to security monitoring, automation, and enterprise cybersecurity processes. * Support continuous improvement initiatives while following cybersecurity best practices. Required Qualifications * Active Top Secret clearance with SCI eligibility (TS/SCI). * Bachelor’s degree in Computer Science, Information Systems, Cybersecurity, Engineering, or a related field; or an additional four (4) years of relevant experience may be substituted for a degree. * Three (3) or more years of experience supporting enterprise cybersecurity, Microsoft security platforms, or systems engineering. * Experience administering or supporting Microsoft enterprise security solutions. * Experience with one or more of the following: * Microsoft Sentinel * Microsoft Defender XDR * Microsoft Purview * Microsoft Entra ID * Microsoft Logic Apps * Microsoft Behavior Analytics * Experience supporting SIEM, SOAR, UEBA, or security monitoring operations. * Working knowledge of Windows and Linux operating systems. * Familiarity with enterprise identity, endpoint, cloud, and security architectures. * Experience supporting RMF documentation or cybersecurity compliance activities. * Knowledge of DISA STIG implementation and cybersecurity best practices. * DoD 8140 / 8570 IAT Level II certification (Security+, CySA+, CCNA Security, or equivalent) with the ability to obtain IAT Level III within an approved timeframe if required. Preferred Qualifications * Microsoft certifications such as: * SC-100: Microsoft Cybersecurity Architect * SC-200: Microsoft Security Operations Analyst * SC-300: Microsoft Identity and Access Administrator * AZ-500: Microsoft Azure Security Engineer Associate * Experience with scripting or automation using PowerShell, Python, Bash, or C#. * Experience integrating Microsoft security products with third-party security tools. * Familiarity with MITRE ATT&CK and threat detection engineering. * Familiarity with Department of Defense and NSA Zero Trust guidance. * Experience supporting the DoD RMF process and Authorization to Operate (ATO) lifecycle. * Familiarity with USSOCOM SOFNET or other DoD enterprise environments. Physical Requirements * Must be able to remain in a stationary position approximately 50% of the time. * Occasionally move throughout the office to access equipment, communicate with team members, and support operational requirements. * Ability to communicate effectively with customers and team members through in-person, telephone, email, and virtual collaboration platforms. This Journeyman role is intended for cybersecurity engineers with solid experience supporting Microsoft security technologies who can independently execute engineering and operational tasks while working under the technical leadership of senior engineers in support of USSOCOM’s Zero Trust implementation. EEO Commitment All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law.