Junior Cyber Defense Incident Responder

GZO; San Antonio (TX); On-site; USD 55,000 - 90,000; Full time

Benefits offered by this job

401(k) matching

Dental insurance

Vision insurance

Wellness resources

Employee discounts

Health insurance

Paid time off

Job summary

GZO INC is seeking a driven Junior Cyber Defense Incident Responder to join our growing security team in San Antonio, TX. You will monitor security events, assist in triage and containment, and perform initial investigations to document incidents.

As part of a fast-paced team, you will support threat-hunting activities, analyze logs and network data, and help refine incident response playbooks while growing your cybersecurity career.

Qualifications

• 1+ year of experience in cybersecurity, IT security, or related field.
• Familiarity with SIEM tools (e.g., Splunk, Microsoft Sentinel).
• Basic understanding of network protocols, firewalls, and intrusion detection/prevention systems (IDS/IPS).
• Knowledge of incident response frameworks such as NIST or MITRE ATT&CK.
• Strong analytical and problem-solving skills with keen attention to detail.
• Ability to work in a fast-paced environment and communicate findings clearly.

Responsibilities

• Monitor security alerts and events across SIEM platforms to detect potential threats and anomalies
• Assist in the triage, analysis, and containment of cybersecurity incidents
• Perform initial investigation and documentation of security incidents and breaches
• Support threat hunting activities to proactively identify indicators of compromise (IOCs)
• Analyze network traffic, logs, and endpoint data to identify malicious activity
• Collaborate with senior analysts to develop and refine incident response playbooks
• Assist in vulnerability assessments and post-incident remediation efforts

Skills

Strong analytical skills

Attention to detail

Communication skills

Fast-paced work environment

Education

CompTIA Security+

CySA+

Tools

Splunk

Microsoft Sentinel

Job description

Benefits:

• 401(k) matching
• Dental insurance
• Vision insurance
• Wellness resources
• 401(k)
• Employee discounts
• Health insurance
• Paid time off

About the Role:

GZO INC is looking for a driven and detail-oriented Junior Cyber Defense Incident Responder to join our growing security team in San Antonio, TX. This is your opportunity to launch your cybersecurity career on the front lines of threat detection and incident response. If you're passionate about protecting critical systems and stopping cyber threats in their tracks, we want to hear from you.

Responsibilities:

• Monitor security alerts and events across SIEM platforms to detect potential threats and anomalies
• Assist in the triage, analysis, and containment of cybersecurity incidents
• Perform initial investigation and documentation of security incidents and breaches
• Support threat hunting activities to proactively identify indicators of compromise (IOCs)
• Analyze network traffic, logs, and endpoint data to identify malicious activity
• Collaborate with senior analysts to develop and refine incident response playbooks
• Assist in vulnerability assessments and post-incident remediation efforts

Requirements:

• 1+ year of experience in cybersecurity, IT security, or a related field
• Familiarity with SIEM tools (e.g., Splunk, Microsoft Sentinel, or similar platforms)
• Basic understanding of network protocols, firewalls, and intrusion detection/prevention systems (IDS/IPS)
• Knowledge of incident response frameworks such as NIST or MITRE ATT&CK
• CompTIA Security+, CySA+, or equivalent certification preferred
• Strong analytical and problem-solving skills with keen attention to detail
• Ability to work in a fast-paced environment and communicate findings clearly

About Us:

GZO INC is a San Antonio-based cybersecurity firm dedicated to delivering cutting-edge defense solutions to clients across a range of industries. Our team thrives on innovation, collaboration, and a shared commitment to staying ahead of an ever-evolving threat landscape. We invest in our people — offering growth opportunities, hands-on experience, and a culture where your contributions truly matter.