D.R. Horton · 7 hours ago
Security Analyst
Arlington, TX
Full-time
Onsite
Entry, Mid Level
1+ years expD.R. Horton, Inc., the largest homebuilder in the U.S., is currently looking for a Security Analyst. The role involves monitoring network traffic for security threats, responding to incidents, and maintaining security configurations to protect the company's IT infrastructure.
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Responsibilities
Monitor network traffic and alerts for indicators of compromise, malicious behavior, lateral movement, or anomalous activity
Respond to and investigate network‑based security incidents across firewalls, routers, switches, wireless environments, and cloud interconnectivity
Support DDoS detection, mitigation coordination, and response
Maintain and improve network security configurations such as ACLs, VLAN segmentation, VPN policies, and IPS/IDS signatures
Assist in managing and reviewing logs from security tools (SIEM, IDS/IPS, NetFlow analyzers, EDR/XDR platforms)
Manage and monitor email security and email flow. Detect phishing scams and analyze email headers. Understanding of DEMARC/DKIM/SPF security a plus
Maintain content filtering platform and determine risk with websites or URLs. Knowledge of domain registration and reputation scoring is optimal
Partner with the Networking and IT Operations teams to troubleshoot connectivity, authentication, or routing issues affecting system security
Maintain DNS security hygiene, including DNS records, name resolution integrity, and DNS‑related attack protections
Work with F5 or other load‑balancing/DNS traffic‑management technologies to ensure secure traffic distribution
Support Active Directory and ADFS from a security perspective, including authentication flows, privileged access, and hardening standards
Assist with identity‑related investigations or authentication anomalies
Analyze security advisories, CVEs, and vendor bulletins specifically for network and infrastructure components
Validate successful patch deployment across network appliances, security tools, and infrastructure systems
Coordinate with SCCM and infrastructure teams to ensure patching is aligned with risk priorities and security controls
Perform network‑centric forensic investigations, including packet captures, log correlation, and threat‑hunting activities
Identify root causes of network compromise and recommend containment or mitigation strategies
Document incident findings and collaborate with teams to close security gaps
Contribute to network‑security projects, deployments, and upgrades
Provide subject‑matter input on firewall changes, secure architecture designs, and network segmentation initiatives
Work with cross‑functional teams to ensure secure rollouts of new applications or services
Participate in the weekly on‑call rotation and respond to after‑hours incidents
Mentor Security Administrators and junior team members
Support IT operational emergencies when they impact business‑critical systems
Travel overnight as required
Qualification
Required
High school diploma or GED
1–4 years of experience in IT or network security
Understanding of network architectures, network protocols, and traffic analysis
Experience with security operations, incident response, or forensic analysis
Knowledge of DNS, Active Directory, network routing/switching, or authentication services
Experience with security or monitoring platforms (SIEM, IDS/IPS, EDR, NetFlow, packet capture tools)
Strong communication, documentation, collaboration, and customer service skills
Ability to work independently or within a team
Ability to interpret technical research and apply it to real‑world security problems
Proficiency with Microsoft Office and email
Preferred
Bachelor's Degree in Cybersecurity, Information Security, or related discipline
Experience with enterprise firewalls, VPNs, or secure access solutions
Familiarity with DDoS concepts, threat‑hunting methodologies, or network‑security frameworks
Strong attention to detail and the ability to manage multiple tasks simultaneously
Benefits
Medical, Dental and Vision
401(K)
Employee Stock Purchase Plan
Flex Spending Accounts
Life & Disability Insurance
Vacation, Sick, Personal Time and Company Holidays
Multiple Voluntary and Company provided Benefits
Company
D.R. Horton
America's Builder is a lofty title, but it's a goal we work toward every day. D.R.
5001-10000 employees
Funding
Current Stage
Late StageLeadership Team
Allison Roberts
Regional CFO
Ashley Johnson
Division CFO
Recent News
2026-01-17
Company data provided by crunchbase