Cyber Security Engineer II

Johns Manville is seeking a Senior Cyber Security Engineer to lead the design, implementation, and support of enterprise security initiatives. This role is responsible for securing enterprise infrastructure and cloud environments, improving threat visibility, and enhancing the organization’s cybersecurity maturity.

Responsibilities:

• Lead the design, implementation, and support of enterprise cybersecurity solutions and security architecture initiatives
• Conduct security research, evaluate emerging technologies, and recommend solutions to improve the organization’s security posture
• Design and implement security controls across enterprise infrastructure, cloud platforms, endpoints, identity systems, and manufacturing environments
• Develop and maintain secure configurations, security standards, and technical documentation
• Lead and support cybersecurity projects involving multiple business units, technical teams, vendors, and stakeholders
• Manage implementation of enterprise security technologies and security enhancement initiatives
• Coordinate project timelines, technical deliverables, testing, validation, and operational transition activities
• Support security integration efforts for cloud services, endpoint technologies, vulnerability management platforms, SIEM/SOAR solutions, and identity security initiatives
• Participate in planning and execution of security modernization and operational improvement projects
• Serve as a senior technical expert for enterprise cybersecurity operations and security technologies
• Administer, maintain, and optimize security platforms including: Cloud security technologies, Endpoint Detection and Response (EDR/XDR), Email security, Identity and access management, Data protection technologies, SIEM and SOAR platforms, Vulnerability management platforms, Threat intelligence integrations
• Develop, tune, and maintain advanced threat detections, correlation rules, analytics, dashboards, and automation workflows
• Utilize Kusto Query Language (KQL) to develop advanced threat hunting queries, detections, reporting, and security investigations within Microsoft Sentinel, Microsoft Defender, and related security platforms
• Develop and maintain SOAR playbooks and automation workflows to improve incident response efficiency and reduce manual operational tasks
• Perform advanced threat hunting and log analysis across cloud, endpoint, network, and identity environments
• Support secure cloud operations and security monitoring across platforms such as Microsoft Azure, Microsoft 365, AWS, and related enterprise technologies
• Lead vulnerability management initiatives across enterprise infrastructure, cloud services, servers, endpoints, applications, and operational technology environments
• Maintain in-depth knowledge and operational experience with vulnerability management and scanning platforms such as Tenable, Qualys, Rapid7, Defender Vulnerability Management, or equivalent technologies
• Coordinate vulnerability remediation efforts with infrastructure, server, networking, cloud, and application teams
• Analyze vulnerability data, prioritize remediation activities based on risk, and provide reporting to technical leadership and management
• Conduct security validation and support penetration testing coordination and remediation tracking activities
• Collaborate with infrastructure, engineering, cloud, networking, DevOps, and business teams to implement secure solutions and resolve security issues
• Provide technical mentorship, training, and guidance to cybersecurity engineers, analysts, and IT personnel
• Assist teams with secure deployment practices, incident troubleshooting, and operational security best practices
• Support development of operational procedures, standards, and security documentation
• Lead and support cybersecurity incident handling, investigation, containment, eradication, and recovery efforts
• Perform advanced forensic analysis and security investigations involving endpoints, cloud services, email systems, identity systems, and enterprise infrastructure
• Develop and maintain threat detections and response processes across SIEM, EDR/XDR, and cloud security platforms
• Analyze escalated security alerts and suspicious activity to identify malicious behavior and reduce false positives
• Create and maintain custom detection logic and security analytics to improve threat visibility and response capabilities
• Develop remediation plans and coordinate incident response activities with technical teams and leadership
• Prepare investigation findings, root cause analysis, and executive-level incident reporting documentation
• Utilize PowerShell scripting and automation to support investigations, security administration, reporting, and operational efficiency initiatives

Requirements:

• Bachelor's degree with a minimum of 7 years of IT experience, OR
• 7-10 years of overall IT experience with at least 7 years focused in cybersecurity/network security
• Additionally, candidates should possess two or more of the following certifications: CISSP, GIAC Certification, Microsoft Security Certifications, Azure Security Certifications, Or equivalent cybersecurity-related certifications
• A Master's degree in Cybersecurity, Information Security, Computer Science, or related field may be considered in lieu of some experience requirements
• Expert-level experience supporting enterprise cybersecurity technologies and operations
• Advanced experience with SIEM and SOAR technologies, including security automation, orchestration, and incident response workflow development
• Strong experience utilizing KQL (Kusto Query Language) for threat hunting, analytics, detections, dashboards, and investigations
• Strong PowerShell scripting experience for automation, reporting, incident response, and systems administration tasks
• Deep understanding of incident response methodologies, threat detection engineering, and forensic analysis best practices
• In-depth experience with vulnerability management programs, vulnerability scanning platforms, remediation coordination, and risk prioritization processes
• Experience implementing and managing enterprise security technologies in cloud, hybrid, and on-premises environments
• Experience with security monitoring, endpoint protection, identity security, email security, and data protection technologies
• Strong analytical, troubleshooting, communication, and project management skills
• Ability to handle sensitive and confidential information
• Ability to work independently and lead complex technical initiatives
• Participation in after-hours support and on-call rotation as required
• Moderate travel required (11–29 days annually), including occasional travel to manufacturing facilities and corporate locations
• Remote and hybrid work candidates must maintain a secure working environment and effectively collaborate with distributed teams
• Experience with Microsoft Sentinel, Microsoft Defender, CrowdStrike, Tenable, Qualys, Rapid7, or similar enterprise security platforms preferred
• Understanding of secure software development practices, DevOps/DevSecOps concepts, and application security principles preferred