Network Security Engineer 0057

San Antonio, TX Network Security Analyst - Solicitation# 37100057 Texas Cyber Command (TXCC)

• Engineer, maintain, and tune SIEM platforms (Google SecOps, Gravwell), including correlation rules, dashboards, enrichment logic, and detection content.

• Configure, tune, and optimize IDS/IPS technologies (Corelight, Tipping Point, Cisco Firepower), including signature development and false-positive reduction.

• Perform packet capture (pcap) analysis to validate alerts, identify malicious traffic, and support investigations using Netwitness or Corelight.

• Conduct network traffic analysis to detect anomalies, lateral movement, and command-and-control activity.

• Strong understanding of network security architecture, including distributed sensors (Corelight), packet capture systems (NetWitness), and log pipelines (CRIBL, Gravwell, Google SecOps).

• Operationalize threat intelligence feeds within SOC platforms and customers, converting indicators into detection logic, correlation rules, and automated enrichment workflows.

• Continuously tune detection content based on intelligence-driven insights, improving alert fidelity and reducing false positives across statewide monitoring.

• Develop and maintain orchestration playbooks within Cyware, integrating SIEM, EDR, threat intelligence, and ticketing systems to support statewide monitoring expansion and rapid incident handling.

• Support SOC operations by providing detection engineering, log onboarding, and data normalization.

• Develop and maintain network security monitoring infrastructure, including sensors, collectors, and log pipelines.

• Collaborate with Incident Responders to provide network-level evidence, context, and threat validation.

• Produce engineering reports, tuning documentation, and platform health assessments.

• Implement detection logic aligned with MITRE ATT&CK, threat intelligence, and emerging adversary behaviors.

• Produce engineering documentation, tuning reports, platform health assessments, and detection coverage maps using data from Firepower, TippingPoint, Corelight, NetWitness, Microsoft Sentinel, and Google SecOps

Candidate must be a U.S. citizen, pass required background checks, complete required cybersecurity, privacy, and operational training before gaining system access, and comply with TXCC security and data-handling requirements. Occasional after-hours support may be required with TXCC approval. Work must be performed from within the United States unless TXCC grants prior written approval.

Network Security, Security Information and Event Management (SIEM), Reporting Dashboards, Intrusion Detection Systems, Intrusion Prevention Systems, Cisco Network Systems, Analysis Skills, Network Traffic Analysis, Security Architecture, Network Security, Needed Required/ Preferred Skills/Experience 5 SOC operations experience 5 Hands-on experience with IDS/IPS platforms, specifically Cisco Firepower and TippingPoint, including signature tuning, false-positive reduction, and threat-driven detection improvements. 5 Advanced packet capture (pcap) and network analysis skills using Corelight, NetWitness, and CRIBL pipelines to identify anomalies, malicious traffic, and lateral movement. 5 Experience maintaining and tuning EDR platforms, including CrowdStrike Falcon and SentinelOne, and integrating EDR telemetry into SIEM and orchestration workflows. 5 Threat intelligence application expertise 5 Develop detection logic aligned with adversary TTPs 6 Preferred Experience operationalizing threat intelligence by converting indicators and TTPs from Recorded Future, ThreatMon, GreyNoise, Google Threat Intelligence, VirusTotal, and Mandiant into SIEM rules, IPS signatures, and automated enrichment logic. 5 Preferred Experience operationalizing threat intelligence by converting indicators and TTPs from Recorded Future, ThreatMon, GreyNoise, Google Threat Intelligence, VirusTotal, and Mandiant into SIEM rules, IPS signatures, and automated enrichment logic. 5 Preferred Perform packet-level analysis to validate alerts and identify malicious activity 5 Preferred Serves as an escalation SOC analysts to support other SOC analyst and incident responders with enriched network-level intelligence 5 Preferred Proficiency with Google SecOps and Cyware (SOAR) orchestration, including building automated workflows that integrate SIEM, IDS/IPS, EDR (CrowdStrike, SentinelOne), threat intelligence, and Jira ticketing for SOC automation 4 Preferred Security Certifications Preferred (CISSP, CEH, GISF, GSEC, CySA+, Sec+)