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Security Engineer

3 weeks, 6 days ago
Pakistan, Sri Lanka, South Africa
Contract
Senior
Security Engineer
Cybersecurity
Active Directory AWS Azure Cybersecurity DHCP DNS PowerShell SIEM TCP/IP Windows Server
Apply Now
GXA

GXA

GXA is an award-winning IT consulting and managed services provider based in Richardson, Texas. With a focus on empowering businesses in Texas, GXA offers a range of IT solutions including managed IT services, business IT consulting, disaster recovery ...

Internet Software & Services
11-50
Founded 2008
View All Jobs 6

Description

  • Serve as a Tier 3 escalation point for security incidents, outages, and complex technical issues.
  • Lead incident analysis through log review, IOC hunting, attacker-activity analysis, and lateral-movement tracing.
  • Execute containment, eradication, and remediation actions, including endpoint isolation, session revocation, credential resets, and access restrictions.
  • Operate and tune the gShield security stack, including Huntress, Microsoft Defender for Endpoint, Cyrisma, DNSFilter, SIEM, and related tools.
  • Investigate alerts, vulnerabilities, suspicious activity, configuration weaknesses, and security control failures across client environments.
  • Troubleshoot security and infrastructure issues across identity, endpoints, servers, networks, firewalls, VPNs, virtualization, and cloud services.
  • Execute and validate client remediation, hardening, vulnerability management, and security improvement activities.
  • Support internal security initiatives involving MFA, passkeys, Intune, Defender, ThreatLocker, AppLocker, and RMM scripting.
  • Create and maintain incident timelines, evidence packages, SOPs, runbooks, detection playbooks, and technical documentation.
  • Collaborate with SOC, infrastructure, onboarding, Centralized Services, security leadership, vendors, and client stakeholders.

Requirements

  • 5–7+ years of experience in cybersecurity, security engineering, infrastructure engineering, network engineering, security operations, or related technical roles.
  • Strong practical understanding of networking, servers, identity, endpoints, cloud services, and their interactions.
  • Hands-on experience troubleshooting on-premises, cloud, or hybrid environments.
  • Working knowledge of Active Directory, Windows Server, DNS, DHCP, TCP/IP, routing, switching, VLANs, VPNs, firewalls, and virtualization.
  • Experience with security engineering, threat detection, incident investigation, or incident response workflows.
  • Experience with Microsoft Defender, Huntress, DNSFilter, SIEM, vulnerability management, and endpoint security platforms.
  • Ability to investigate alerts, analyze logs, determine scope, trace attacker activity, and support containment and remediation.
  • Familiarity with phishing, BEC, account compromise, ransomware, identity-based attacks, and endpoint compromise.
  • Strong communication, documentation, collaboration, root-cause analysis, and independent troubleshooting skills.
  • Preferred: MSP/MSSP experience; Intune, Sentinel, AppLocker, ThreatLocker, Azure, PowerShell, APIs, CIS benchmarks, Zero Trust, or relevant security and infrastructure certifications.

Interested in this position?

Apply directly on the company website

Apply Now

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