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Mainframe Z Os System Programmer Jobs in Chicago, IL

Accenture

Mainframe Specialist

Chicago, IL

$70K - $196K/yr

Evaluate legacy systems and propose actionable modernization strategies-covering rehosting ... Partner with cross-functional teams-architects, developers, QA, and business analysts-to gather ...

Ensono

Mainframe Security Engineer

Downers Grove, IL · On-site

$80 - $110/hr

Mainframe System Security Engineer Worker Type: Employee Responsibilities * Create, modify and maintain security access on internal and external userids and security rules for mainframe systems.

3B Staffing LLC

Mainframe Developer

Chicago, IL · On-site

$50.50 - $65/hr

This is for local Mainframe developers.. Contract to hire only Must have GC or USC only 8+ years ... of systems/contexts affected when defining technical designs * Performs analysis on failures ...

3B Staffing LLC

Mainframe Developer

Chicago, IL · On-site

$50.50 - $65/hr

This is for local Mainframe developers.. Contract to hire only Must have GC or USC only 8+ years ... of systems/contexts affected when defining technical designs * Performs analysis on failures ...

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.

Point72

Quantitative Developer

Chicago, IL · On-site

Quantitative Developer for a PM team focused on systematic credit and related asset classes. This ... Solid understanding of Linux OS-system components, process management, shell scripting.

Point72

Quantitative Developer

Chicago, IL · On-site

Quantitative Developer for a PM team focused on systematic credit and related asset classes. This ... Solid understanding of Linux OS-system components, process management, shell scripting.

Point72

Quantitative Developer

Chicago, IL · On-site

The Quantitative Developer will collaborate with a portfolio manager and a team of quant ... Linux OS--system components, process management, shell scripting. • Proficiency in Python ...

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 ... engineering team and associated systems. * Responsible for developing and maintaining ...

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 ... engineering team and associated systems. * Responsible for developing and maintaining ...

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Mainframe Z Os System Programmer information

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How much do mainframe z os system programmer jobs pay per hour?

As of Sep 5, 2026, the average hourly pay for mainframe z os system programmer in Chicago, IL is $59.93, according to ZipRecruiter salary data. Most workers in this role earn between $54.47 and $69.33 per hour, depending on experience, location, and employer.

What is a mainframe z/os system programmer?

A Mainframe Z OS System Programmer is an IT professional responsible for installing, configuring, maintaining, and troubleshooting IBM mainframe systems running the z/OS operating system. They ensure the mainframe environment is stable, secure, and optimized for performance, supporting critical business applications. Their duties include system upgrades, applying patches, disaster recovery planning, and providing technical support to other IT teams. This role is crucial for organizations that rely on mainframe computing for large-scale transaction processing and data management.

What are the key skills and qualifications needed to thrive as a mainframe z/os system programmer?

To thrive as a Mainframe Z/OS System Programmer, you need deep expertise in IBM mainframe operating systems, programming languages like Assembler and REXX, and a strong foundation in systems administration, usually supported by a relevant degree or equivalent experience. Familiarity with tools such as IBM SMP/E, TSO/ISPF, JCL, and mainframe security systems is essential, and certifications like IBM Certified System Programmer can be beneficial. Analytical thinking, attention to detail, and effective problem-solving are key soft skills that help professionals excel in troubleshooting and collaborating with technical teams. These skills and qualifications are crucial for ensuring reliable, secure, and efficient mainframe operations that support critical business processes.

What are some common challenges faced by mainframe z/os system programmers, and how can they be addressed?

Mainframe Z/OS System Programmers often encounter challenges such as managing system upgrades, ensuring high availability, and troubleshooting complex performance issues. Keeping up with evolving technologies and integrating new software with legacy systems can also be demanding. To address these challenges, programmers typically work closely with application developers, attend ongoing training, and utilize robust monitoring tools. Collaboration and strong communication within cross-functional teams are key to maintaining system stability and implementing updates smoothly.

What are popular job titles related to Mainframe Z Os System Programmer jobs in Chicago, IL?

For Mainframe Z Os System Programmer jobs in Chicago, IL, the most frequently searched job titles are:

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Mainframe Z Os System Programmer jobs near you
Infographic showing various Mainframe Z Os System Programmer job openings in Chicago, IL as of August 2026, with employment types broken down into 1% As Needed, 83% Full Time, 13% Part Time, and 3% Contract. Highlights an 92% Physical, 2% Hybrid, and 6% Remote job distribution, with an average salary of $124,654 per year, or $59.9 per hour.

L2 Application Support Engineer - Mainframe

Saransh Inc

Chicago, IL • On-site

Contractor

Re-posted 23 days ago

Job description

Job title: L2 Application Support Engineer - Mainframe
Location: Chicago, IL
Contract
 
Candidate should be in client office 3 days a week and with an option to extend all 5 days a week at client discretion.
 
Skill Metrics:
DB2
Cobol
VSAM
JCL
Mainframe Systems

Job Description:
  • The role is an IT Support Analyst responsible for L2 production support for Fund Accounting and US Transfer Agency applications.
  • The position requires strong mainframe skills (JCL, COBOL, DB2, VSAM) and the ability to troubleshoot issues across multiple technologies.
  • The analyst will work closely with global teams, business partners, and upstream/downstream systems, handling incident management, root-cause analysis, and on-call support.
  • The job requires 8–10+ years of technical experience in a financial environment, strong communication skills, and the ability to operate in a fast-paced, multi-tasking environment.
  • The role is Chicago-based, with at least 3 days per week onsite and occasional night/weekend support.

Mandatory skills:
Mainframe skills (COBOL,JCL,DB2,VSAM), Troubleshooting Analytical
Experience required: 8-10 years