Criterion Systems, Inc.

Tier I Intrusion Analyst

Job Locations US-NV-Las Vegas
Information Technology
Regular Full-Time


At Criterion Systems, we developed a different kind of business—a company whose real value is a reputation for excellence built upon the collective skills, talents, perspectives, and backgrounds of its people. By accepting a position with Criterion Systems, you will join a group of professionals with a collaborative mindset where we share ideas and foster professional development to accomplish our goals. In addition to our great culture, we also offer competitive compensation and benefit packages, company-sponsored team building events, and advancement opportunities. To find out more about how Criterion can help you take your career to the next level please visit our website:


Our staff provides cyber security support to the Department of Energy National Nuclear Security Administration.


Criterion Systems is seeking to hire a Tier 1 Intrusion Analyst in Las Vegas, Nevada. The candidate will be part of the Security Operation Center (SOC) working in a 24x7 environment. The position requires interaction with security personnel at customer sites, various levels of management, and outside agencies. Position can include up to 10% travel, local and nationwide. Applicant must be a positive, flexible, self-starter requiring minimal supervision, and able to excel in a fast-paced environment. Communication skills are critical with the ability to verbalize and provide documentation to both technical and non-technical audiences. Applicants must be detail-oriented and have the ability to multi-task effectively.


  • Monitor, deter, identify, and investigate computer and network intrusions. Ability to research trends and countermeasures in computer/network including vulnerabilities, exploits, and malicious activity. Develop and maintain in-depth knowledge and hands-on experience with computer network security techniques and best practices. Technical focus on the monitoring and analysis of large, distributed and complex network. Candidate must be able to identify suspicious and malicious activity in a heterogeneous network environment and respond appropriately.
  • Research new and evolving threats and vulnerabilities with potential to impact the monitored environment.
  • Read and understand network packet capture files.
  • Monitoring and analysis of network and IDS information.
  • Log collection, analysis, correlation, and alerting.
  • Identification of suspicious/malicious activities.
  • Identification and tracking of malicious code.
  • Reporting malicious activity to client locations with recommendations for remediation.
  • Review and management of incident resolutions
  • Other duties as assigned - Travel up to 10%


Required Qualifications:

  • Bachelor's Degree in Computer Science, Information Systems, Information Security or related technical discipline OR 4 years professional IT experience may be used in lieu of degree.
  • Three (3) years of working experience with a preference in IT or cyber security
  • Ability to obtain a clearance OR Active Department of Energy (DOE) “Q” Clearance OR Top Secret Security Clearance OR Secret with an SSBI investigation
  • US Citizenship required (no dual citizenship)
  • Must be willing to work various shifts in a 24x7 environment.
  • Strong knowledge of networking - Strong knowledge of common network protocol behavior.
  • Strong knowledge of information security principles.
  • Excellent verbal and written communications skills.
  • Excellent customer service skills

Desired Qualifications:

  • One or more years’ previous experience in network intrusion analysis is highly desired
  • Experience with network and host-based IDS/IPS.
  • Experience with SIM/SIEM technologies.
  • The following information security training is highly desired: SANS GSEC, SANS GCIA, SANS GCIH, CEH, OSCP.
  • Compliance with 8570 CND-A within six months.


Criterion Systems, Inc. and its subsidiaries are committed to equal employment opportunity and non-discrimination at all levels of our organization.  We believe in treating all applicants and employees fairly and make employment decisions without regard to any individual’s protected status:  race, ethnicity, color, national origin, ancestry, religion, creed, sex/gender, gender identity/gender expression, sexual orientation, physical and mental disability, marital/parental status, pregnancy (including childbirth, lactation, and related medical conditions), age, genetic information (including characteristics and testing), military and veteran status, or any other characteristic protected by law. For our complete EEO/AA and Pay Transparency statement, please visit


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