Cortex XSIAM Security Engineer

CELESTIAL INNOVATIONS GROUP LLC; Washington (District of Columbia); Hybrid; USD 100,000 - 130,000; Full time

Benefits offered by this job

401(k)

Competitive salary

Dental insurance

Health insurance

Paid time off

Vision insurance

Job summary

CELESTIAL INNOVATIONS GROUP LLC is seeking a Cortex XSIAM Security Engineer in Washington, DC to deploy and configure Palo Alto Networks solutions for federal clients. This role focuses on modernizing Security Operations by integrating platforms and ensuring compliance. Ideal candidates will have 3+ years of experience with Cortex XSIAM and SIEM deployment. The position allows flexible work-from-home options and offers a competitive salary with benefits including health and dental insurance.

Qualifications

• 3+ years of hands-on experience with Palo Alto Networks Cortex XDR or Cortex XSIAM.
• Experience deploying or administering SIEM platforms.
• Familiarity with MITRE ATT&CK framework.

Responsibilities

• Lead deployment of Cortex XSIAM for clients.
• Build and tune correlation rules within XSIAM.
• Design SOAR automation playbooks within XSIAM.

Skills

Experience with Palo Alto Networks Cortex XDR or Cortex XSIAM

Deploying or administering SIEM platforms

Proficiency with XQL

Knowledge of SOAR concepts

Familiarity with MITRE ATT&CK framework

Active Secret clearance

Education

Bachelor's degree in Cybersecurity, Computer Science, Information Systems, or related field

Tools

Cortex XSIAM/XDR

XQL query language

Palo Alto NGFW / Prisma

Job description

Benefits

• 401(k)
• Competitive salary
• Dental insurance
• Health insurance
• Paid time off
• Vision insurance

Position Summary

Celestial Innovations Group (CIG) is seeking a skilled Cortex XSIAM Security Engineer to deploy, configure, and operationalize Palo Alto Networks Cortex XSIAM for federal and enterprise clients. This role is at the center of CIG's AI-driven Security Operations practice, enabling clients to modernize their SOC by consolidating SIEM, XDR, SOAR, UEBA, ASM, and TIP capabilities into a single, converged platform.

Key Responsibilities

Platform Deployment & Integration

• Lead end-to-end deployment of Cortex XSIAM for federal and enterprise clients, including data source onboarding, log ingestion, and normalization.
• Integrate XSIAM with existing security ecosystem tools including firewalls, endpoints, cloud platforms, identity providers, and ticketing systems.
• Configure data pipelines to ingest and normalize telemetry from diverse sources (endpoints, network, cloud, identity) into XSIAM's unified data model.
• Migrate clients from legacy SIEM platforms to Cortex XSIAM, ensuring continuity of detection coverage and compliance reporting.

Detection Engineering & Analytics

• Build and tune correlation rules, behavioral analytics, and ML-based detection models within XSIAM to reduce false positive rates and improve detection fidelity.
• Develop and maintain XSIAM analytics leveraging XQL (Extended Query Language) to extract actionable insights from security telemetry.
• Map detection content to MITRE ATT&CK framework, ensuring coverage across all relevant tactics, techniques, and procedures (TTPs).
• Configure AI SmartScoring and technique-based incident grouping to reduce alert fatigue and prioritize analyst workload effectively.

Automation & Playbook Development

• Design, build, and maintain SOAR automation playbooks within XSIAM to automate triage, enrichment, and remediation workflows.
• Leverage Cortex Marketplace content packs and develop custom integrations as needed to support client-specific security processes.
• Implement dev/prod playbook lifecycle management to ensure safe testing and controlled promotion of automation content.
• Continuously improve automation coverage, targeting measurable reductions in manual analyst workload.

Incident Response & Threat Management

• Serve as escalation point for complex incident investigations, using XSIAM causality chains and full attack-story visualizations to support rapid remediation.
• Coordinate with client SOC teams during active incidents, leveraging XSIAM's embedded automation and enrichment capabilities.
• Support Attack Surface Management (ASM) functions to proactively identify and remediate client exposure.
• Utilize integrated Threat Intelligence Platform (TIP) capabilities, including Unit 42 threat feeds, to enrich alerts and inform response priorities.

Client Engagement & Advisory

• Serve as a trusted technical advisor to federal and commercial clients on XSIAM capabilities, roadmap, and SOC modernization strategy.
• Produce SOC performance dashboards, compliance reports, and executive summaries within XSIAM to support client governance requirements.
• Conduct training and knowledge transfer sessions to build client SOC team proficiency on the XSIAM platform.
• Support CIG business development efforts by contributing to proposals, demos, and technical capability briefings for prospective clients.

Required Qualifications

• 3+ years of hands‑on experience with Palo Alto Networks Cortex XDR or Cortex XSIAM in an enterprise or federal environment.
• Demonstrated experience deploying or administering SIEM platforms (Splunk, Microsoft Sentinel, IBM QRadar, or equivalent).
• Proficiency with XQL or comparable query languages for log analysis and threat hunting.
• Working knowledge of SOAR concepts and experience building security automation playbooks.
• Understanding of EDR, NDR, and UEBA technologies and how they feed into a converged SOC platform.
• Familiarity with MITRE ATT&CK framework and its application to detection engineering.
• Active Secret clearance (minimum); TS/SCI preferred for federal engagements.
• Bachelor's degree in Cybersecurity, Computer Science, Information Systems, or related field, OR equivalent professional experience.

Preferred Qualifications

• Palo Alto Networks Certified Security Automation Engineer (PCSAE) or Cortex XSIAM-specific certification.
• Experience with federal compliance frameworks including NIST SP 800-53, RMF, DISA STIGs, and CDM program requirements.
• Familiarity with Zero Trust Architecture principles (NIST SP 800-207, CISA ZT Maturity Model) and how XSIAM supports ZTA adoption.
• Experience integrating Cortex XSIAM with Palo Alto Networks NGFW, Prisma Cloud, or Zscaler platforms.
• Knowledge of cloud security telemetry sources (AWS, Azure, GCP) and their ingestion into XSIAM.
• Exposure to Python or JavaScript for custom XSIAM integration development or automation scripting.
• Prior experience supporting federal SOC operations or DHS CDM program environments.
• CISSP, CEH, CompTIA Security+, or equivalent security certification.

Technical Skills & Tools

• SOC Platforms: Cortex XSIAM/XDR, Cortex XSOAR
• SIEM platforms: XQL query language
• EDR / NDR / UEBA: integrated monitoring
• Security Frameworks: MITRE ATT&CK, NIST SP 800-53/RMF, NIST SP 800-207 (Zero Trust Architecture), CISA Zero Trust Maturity Model, DISA STIGs
• Integrations & Tools: Palo Alto NGFW / Prisma, Zscaler ZIA/ZPA, Microsoft Sentinel/Azure, ServiceNow/Ticketing systems, AWS/Azure/GCP

Flexible work from home options available.