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Mainframe Security Engineer

Job in Downers Grove, DuPage County, Illinois, 60515, USA
Listing for: Ensono, LLC
Full Time position
Listed on 2026-07-01
Job specializations:
  • IT/Tech
    Cybersecurity, Information Security, Systems Engineer, IT Consultant
Job Description & How to Apply Below

Mainframe System Security Engineer

The primary role of the Mainframe System Security Engineer is to create, modify and maintain security access on internal and external userids and security rules access for mainframe systems. All three security products, ACF2, Top Secret and RACF are utilized for supporting mainframe system access. In addition, they will review security policies, procedures, standards, baselines and may recommend and coordinate security remediation plans involving the implementation of security solutions, both technology and procedures;

while maintaining an understanding of security standards, policies and procedures.

Requirements:

Basic Knowledge of Security and good security best practices

  • Hands-on administration of RACF, ACF2 and Top Secret login 's, dataset and resource rules.
  • Monitor system security policy and violations/incidents
  • Perform and review daily, weekly, and monthly audit reports
  • Liaison with business areas and other technical support areas
  • Provide customer support by preparing ad hoc reports and giving presentations
  • Monitors the environment for adherence to security standards
  • Must be available 24 x7
  • Experience using IBM zSecure security products
  • Experience with REXX or any programming language is a plus
  • iSeries security knowledge a plus
Technical

Skills:
  • Excellent TSO, JCL, IBM UTILITIES, JES2, and ISPF a must
  • Experience with CICS preferred
  • Experience using Vanguard security products is desired
General Knowledge:
  • Some MVS experience is a plus
  • PC Skills (Microsoft Outlook, Word, Excel, PowerPoint)
Personal

Skills:
  • Strong written and verbal communication skills.
  • Strong organizational skills with the ability to manage multiple concurrent project deliverables and the ability to work as a global team.
  • Ability to work on own initiatives.
  • Strong analytical skills and problem solving skills
  • Must be an excellent team player with the ability to work independently in a fast paced environment
  • Self starter, detailed oriented and ability to multi task
  • Excellent Communication skills required
  • Good written skills are required
Education:
  • CISSP, CISA, CISM or ITIL Certification a plus
  • Bachelors or Masters Degree Preferred
  • Other mainframe security products a plus

Primary Location City/State:

Downers Grove, IL
- Finley, Illinois

Additional Locations (if applicable):

Homebased
- Downers Grove, IL
- Finley

Ensono is an Equal Employment Opportunity Employer. Ensono provides equal employment opportunities to all qualified applicants without regard to race, color, religion, national origin, ancestry, citizenship status, sex, marital status, pregnancy, age, disability, genetic information, sexual orientation, gender identity or expression, veteran status, military status, or any other status protected by applicable law.

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