Cyber Defense Principal Security Engineer

1 day ago


Johnston, United States Citizens Full time
Cyber Defense Principal Security Engineer

Citizens is seeking a highly skilled Cyber Defense Principal Security Engineer to join our team. As a key member of our Cybersecurity Operations team, you will be responsible for developing, maintaining, and troubleshooting security tool detections/rules used for detecting cyber-attacks, intrusions, and data loss incidents.

Key Responsibilities:
  • Develop and Maintain IDS/IPS Policies and Rules: Regularly review and update IDS/IPS policies and rules to ensure they are current and effective. Develop new detection rules based on emerging threats and intelligence.
  • Tune IDS/IPS Systems: Continuously optimize IDS/IPS configurations to minimize false positives and enhance detection accuracy. Conduct regular performance assessments and make necessary adjustments.
  • Develop Detections for SIEM and Other SOC Tools: Implement security use cases and transform them into correlation queries, templates, rules, and alerts across multiple cloud environments and on-premises technologies.
  • Create Technical Documentation: Document IDS/IPS configurations, tuning procedures, and any changes made to policies and rules. Ensure documentation is up-to-date and accessible to the team.
  • Monitor Security Tool Health and Performance: Ensure that IDS/IPS are functioning properly. Address any performance issues and coordinate with teams/vendors for support if necessary.
  • Integrate Cyber Threat Intelligence: Enhance IDS/IPS capabilities by integrating relevant threat intelligence feeds and indicators of compromise (IOCs).
  • Develop Reports and Dashboards: Create and maintain reports and dashboards that provide visibility into IDS/IPS activity and effectiveness.
  • Collaborate on SIEM Functional Requirements: Work with the SIEM team to ensure effective logging, event collection, normalization, correlation, reporting, and customization that supports IDS/IPS data.
  • Support Security Engineering Team: Assist in resolving complex technical issues related to IDS/IPS systems.
  • Mentor and Train Team Members: Provide guidance and training to junior team members on IDS/IPS best practices, rule creation, and tuning.
Requirements:
  • Expert Level Knowledge of Cybersecurity Operations: Excellent understanding of Cybersecurity Operations and Incident Response processes.
  • IDS/IPS Technologies: Expert level knowledge of IDS/IPS technologies (Cisco Firepower, Palo Alto, etc.).
  • Detection Creation/Tuning Concepts: Expert level knowledge of detection creation/tuning concepts and best practices.
  • Cloud Computing Platforms: Experience working with cloud computing platforms such as Amazon Web Services, Azure, etc.
  • Operating Systems: Solid understanding of various operating systems (Window, Unix, Linux, AIX, etc.).
  • Regular Expressions: Advanced ability to develop regular expressions.
  • Programming Languages: Advanced ability to automate tasks using a preferred language (e.g. Snort).
  • Communication Skills: Excellent oral and written communications skills.
  • Analytical Skills: Strong analytical skills.
  • Self-Motivation: Self-motivation with the ability to work under minimal supervision.
Preferred Skills/Experience:
  • 7 Years of Proven Experience: 7 years of proven hands-on experience in IDS/IPS concepts.
  • SOC Technologies: Experience with SOC technologies such as SIEM, EDR, anti-virus, network-based threat detection, and netflow.
  • Enterprise Logging Standards: Strong understanding of enterprise logging standards.
  • Cyber Kill Chains: Understanding of cyber kill chains and campaign strategies such as MITRE ATT&CK.
  • APIs: Ability to interact with common APIs.
  • Team Collaboration: Proven successful working relationships with teams outside of Cybersecurity.
Education, Certifications, and/or Other Professional Credentials:
  • Bachelor's Degree: Bachelor's Degree (Security / IT Related) or equivalent combination of experience.
  • Industry Certifications: A combination of relevant industry certifications including, but not limited to CISSP, GREM, GCIH, GCIA, CEH, GCED, CISA, etc.


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