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Mainframe Security Jobs in Illinois (NOW HIRING)

Ensono

Mainframe Security Engineer

Downers Grove, IL · On-site

Employee 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.

Huntington

RACF Mainframe Security Engineer

Chicago, IL · On-site +1

$70K - $140K/yr

The RACF Mainframe Security Engineer is accountable for delivery and implementation of IAM technologies across the bank. Duties & Responsibilities: * Deliver business value by delivering and ...

Huntington

RACF Mainframe Security Engineer

Chicago, IL · On-site +1

$70K - $140K/yr

The RACF Mainframe Security Engineer is accountable for delivery and implementation of IAM technologies across the bank. Duties & Responsibilities: * Deliver business value by delivering and ...

krg technology inc

Mainframe SDM Delivery

Chicago, IL · On-site

Knowledge in at least two additional areas of technical disciplines is a strong plus: mainframe security, system programming, parallel sysplex, network, storage, High Availability, Performance and ...

Broadcom

R&D Engineer Software 3

Lisle, IL

In this role, you will be a key member of the development team and will focus on building, testing, and supporting leading-edge Mainframe Security solutions used by many of the world's largest ...

Broadcom Inc.

R&D Engineer Software 3

Lisle, IL · On-site

$91.10 - $146/hr

In this role, you will be a key member of the development team and will focus on building, testing, and supporting leading-edge Mainframe Security solutions used by many of the world's largest ...

Broadcom

R&D Software Engineer

Lisle, IL · On-site

Broadcom's Mainframe Software Division is seeking a talented R&D Software Engineer to join their Mainframe Security and Compliance team. The role involves building, testing, and supporting security ...

Broadcom

R&D Software Engineer

Lisle, IL

In this role, you will be a key member of the development team and will focus on building, testing, and supporting leading-edge Mainframe Security solutions used by many of the world's largest ...

Ensono

Senior Sales Executive

Downers Grove, IL · On-site

The Senior Sales Executive must have a proven track record selling "as-a-service" complex technology offerings that include managed services, public cloud, mainframe, security and outsourcing. He/she ...

Broadcom

R&D SW Engineer

Lisle, IL

Familiarity with network security protocols (TLS, SSH, IPSEC) and their use in mainframe environment * Track record working on complex, large-scale production software with real customer impact

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Mainframe Security information

See Illinois salary details

$9

$51

$70

How much do mainframe security jobs pay per hour?

As of Aug 23, 2026, the average hourly pay for mainframe security in Illinois is $51.72, according to ZipRecruiter salary data. Most workers in this role earn between $45.67 and $58.70 per hour, depending on experience, location, and employer.

What is a mainframe security?

A Mainframe Security job involves protecting the mainframe environment by implementing security policies, monitoring access, and preventing unauthorized activities. Professionals in this role use tools like RACF, ACF2, or Top Secret to manage user authentication, enforce security controls, and detect potential threats. They also conduct audits, ensure compliance with regulations, and respond to security incidents. Their goal is to safeguard critical business data and maintain the integrity of the mainframe system.

What does a mainframe security specialist do?

A Mainframe Security specialist is primarily responsible for managing user access, monitoring system activity for potential security incidents, and updating security policies to address emerging threats. Their day-to-day tasks often include configuring security software (such as RACF or ACF2), conducting system audits, investigating security breaches, and collaborating with IT and compliance teams. They may also provide guidance during security reviews and support internal or external audits. This role involves a blend of technical, analytical, and communicative activities to ensure the continued protection of the organization’s most critical information assets.

What skills and qualifications are needed for mainframe security?

To thrive in Mainframe Security, you need expertise in mainframe operating systems (such as IBM z/OS), security protocols, access control management, and risk assessment, typically supported by a degree in computer science or a related field. Familiarity with tools like RACF (Resource Access Control Facility), ACF2, and certifications such as CISSP or IBM Certified Specialist are common requirements. Strong problem-solving skills, attention to detail, and the ability to communicate security risks to both technical and non-technical stakeholders are valuable soft skills. These competencies are crucial for protecting critical business data, ensuring regulatory compliance, and minimizing security vulnerabilities in large-scale enterprise environments.

What are the most commonly searched types of Mainframe Security jobs in Illinois?

The most popular types of Mainframe Security jobs in Illinois are:

What are popular job titles related to Mainframe Security jobs in Illinois?

For Mainframe Security jobs in Illinois, the most frequently searched job titles are:

What job categories do people searching Mainframe Security jobs in Illinois look for?

The top searched job categories for Mainframe Security jobs in Illinois are:

Mainframe Security jobs near you
Infographic showing various Mainframe Security job openings in Illinois as of August 2026, with employment types broken down into 89% Full Time, 9% Part Time, and 2% Contract. Highlights an 92% Physical, 3% Hybrid, and 5% Remote job distribution, with an average salary of $107,587 per year, or $51.7 per hour.

Mainframe Security Engineer

Ensono

Downers Grove, IL • On-site

Full-time

Re-posted 21 days ago

Job description

Worker Type:

EmployeeThe 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 ID'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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About Ensono

Sourced by ZipRecruiter

At Ensono, our **Purpose is to be a relentless ally, disrupting the status quo and unleashing our clients to** **_Do Great Things!_** We enable our clients to achieve key business outcomes that reshape how our world runs. As an expert technology adviser and managed service provider with cross-platform certifications, Ensono empowers our clients to keep up with continuous change and embrace innovation.

Industry

It services

Company size

1,001 - 5,000 Employees

Headquarters location

Downers Grove, IL, US

Year founded

1969

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