Senior Security Analyst

D.R. Horton•Arlington, TX

About The Position

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.

Requirements

Minimum five years’ experience in an IT related field
Advanced knowledge of IT Security Operations and Forensic Operations
Advanced knowledge of IT Networking and Network Security Operations
Advanced knowledge of IT Infrastructure and Applications
Advanced knowledge of Cyber Attackers and Threat Actor tactics
Advanced experience of project management and delegation
Advanced business communication and collaboration skills
Advanced Documentation skills
Ability to work with teammates on projects
Ability to work alone and accomplish tasks independently
Ability to interpret research into solutions to actual problems
Customer Service skills
Advanced Documentation skills
Experienced mentoring and training skills
Ability to apply common sense understanding to carry out instructions furnished in written oral form or via DRH applications
Proficiency with MS Office and email
Ability to sit for majority of 8-hour workday; use hands and fingers to handle or feel; reach with hands and arms; talk and hear. Specific vision abilities required by this job include close vision and peripheral vision
The noise level is generally moderate

Nice To Haves

Bachelor’s Degree in Cyber Security discipline preferred
Provide attention to detail and manage multiple responsibilities
Come join a winning team with a Fortune 500 company! We are growing fast and are looking for enthusiastic attitudes and team players to join our success.

Responsibilities

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.
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).
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.
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.
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.
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.