Senior Security Analyst

D.R. Horton, Inc., the largest homebuilder in the U.S., was founded in 1978 and is a publicly traded company on the New York Stock Exchange. It is engaged in the construction and sale of high quality homes designed principally for the entry-level and first time move-up markets. The Company also provides mortgage financing and title services for homebuyers through its mortgage and title subsidiaries.  Please visit our website at www.drhorton.com for more information. D.R. Horton, Inc. is currently looking for a Senior Security Analyst. The Senior Security Analyst is responsible for protecting the organization’s systems, networks, identities, and data through continuous monitoring, incident response, and proactive security improvements. This role works closely with IT Operations, Networking, Infrastructure, and Application teams to detect threats, investigate security events, reduce risk, and help design secure enterprise solutions. The ideal candidate has 8–10 years of progressive IT experience, including 5 or more years of direct information security experience, with strong technical depth and the ability to operate independently in complex enterprise environments. Essential Duties and Responsibilities include the following. Other duties may be assigned. Security Operations & Monitoring Monitor security alerts, logs, and telemetry for indicators of compromise, malicious behavior, anomalous activity, or policy violations. Lead investigation and response to security incidents involving endpoints, servers, network infrastructure, identity platforms, and cloud services. Perform incident triage, containment, remediation coordination, and post-incident analysis. Manage, tune, and improve security monitoring tools, including SIEM, IDS/IPS, EDR/XDR, NetFlow analyzers, and log aggregation platforms. Analyze phishing attempts and suspicious email activity, including header analysis and email flow troubleshooting. Maintain and review web and content filtering platforms, assessing risk related to URLs, domains, and external services. Network & Infrastructure Security Partner with Networking and IT Operations teams to troubleshoot and resolve security-related connectivity, routing, or authentication issues. Maintain and improve secure configurations for firewalls, VPNs, load balancers, and cloud connectivity. Support DDoS detection, mitigation coordination, and response activities. Maintain DNS security hygiene, including name resolution integrity and protection against DNS-based attacks. Support secure traffic distribution using load balancing or DNS traffic management technologies (e.g., F5 or similar platforms). Identity & Access Security Support Active Directory, Azure AD, ADFS, and related identity platforms from a security perspective. Investigate authentication anomalies, account misuse, and privileged access issues. Help enforce identity security best practices, including least privilege, access reviews, and monitoring. Vulnerability & Patch Management Analyze security advisories, CVEs, and vendor bulletins affecting infrastructure, operating systems, and enterprise applications. Validate and track patch deployment across servers, endpoints, network devices, and security appliances. Coordinate with infrastructure, endpoint, and SCCM teams to align patching with risk and business priorities. Incident Response & Forensics Perform security investigations using log analysis, endpoint data, and network evidence. Conduct packet captures, log correlation, and threat hunting activities. Identify root causes of security incidents and recommend long-term mitigation strategies. Document findings, lessons learned, and corrective actions. Project & Operational Support Contribute to security-related projects, including tool deployments, upgrades, and architectural improvements. Provide security guidance on infrastructure changes, firewall rules, segmentation, and system designs. Partner with cross-functional teams to ensure secure deployment of new applications and services. Assist with the development and improvement of security standards, procedures, and documentation.