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Mainframe System Programmer Jobs in California (NOW HIRING)

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Mainframe Systems Programmer

Downey, CA

$56.75 - $72.25/hr

... existing system software products. Experience Required: This classification must have a minimum of seven (7) years of experience as a Systems Programming with at least three (3) years of that ...

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How much do mainframe system programmer jobs pay per hour?

As of Jun 1, 2026, the average hourly pay for mainframe system programmer in California is $57.41, according to ZipRecruiter salary data. Most workers in this role earn between $52.21 and $66.44 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Mainframe System Programmer, and why are they important?

To thrive as a Mainframe System Programmer, you need deep knowledge of mainframe operating systems (such as z/OS), programming languages like COBOL or Assembler, and a degree in computer science or a related field. Familiarity with mainframe tools (e.g., IBM ISPF, JCL, SMP/E) and certifications such as IBM Certified System Programmer are typically required. Analytical thinking, problem-solving, and effective communication are crucial soft skills for diagnosing issues and collaborating with IT teams. These skills are vital to ensure the stability, security, and efficiency of critical enterprise computing environments.

What are some common challenges Mainframe System Programmers face when supporting legacy systems?

Mainframe System Programmers often encounter challenges such as integrating modern applications with legacy mainframe environments, ensuring system security while maintaining uptime, and troubleshooting complex issues that span both old and new technologies. They may also face difficulties due to limited documentation or retiring expertise as experienced colleagues leave the workforce. Staying current with evolving mainframe tools and best practices helps address these challenges and keeps systems running smoothly.

What are mainframe system programmers?

Mainframe system programmers are IT professionals who specialize in installing, configuring, maintaining, and optimizing mainframe computer systems. They are responsible for the underlying software infrastructure, such as operating systems (like IBM z/OS), network configurations, and middleware. Their work ensures that mainframe environments run efficiently, securely, and with minimal downtime, supporting critical applications for large organizations. System programmers also troubleshoot complex issues and implement updates or enhancements as needed.

What is the difference between Mainframe System Programmer vs Mainframe Application Developer?

AspectMainframe System ProgrammerMainframe Application Developer
Required CredentialsCertifications in mainframe systems, such as IBM Certified System ProgrammerProgramming certifications, often in COBOL, Java, or other languages
Work EnvironmentOperate primarily on mainframe hardware, focus on system setup and maintenanceDevelop and modify applications running on mainframes
Employer & Industry UsageUsed by organizations with large-scale legacy systems, banking, insuranceDevelops business applications for mainframe environments in similar industries

While both roles work within mainframe environments, Mainframe System Programmers focus on system setup, maintenance, and optimization, whereas Mainframe Application Developers concentrate on creating and updating applications that run on mainframes. Understanding these differences helps in choosing the right career path or job search focus.

What are popular job titles related to Mainframe System Programmer jobs in California? For Mainframe System Programmer jobs in California, the most frequently searched job titles are:
What job categories do people searching Mainframe System Programmer jobs in California look for? The top searched job categories for Mainframe System Programmer jobs in California are:
What are popular job titles related to Mainframe System Programmer jobs in CA? For Mainframe System Programmer jobs in CA, the most frequently searched job titles are:
Mainframe System Programmer jobs near you
Infographic showing various Mainframe System Programmer job openings in California as of May 2026, with employment types broken down into 60% Full Time, and 40% Contract. Highlights an 60% In-person, and 40% Remote job distribution, with an average salary of $119,422 per year, or $57.4 per hour.
Mainframe Systems Programmer/Mainframe DBA

Mainframe Systems Programmer/Mainframe DBA

West Advanced Technologies (WATI)

Downey, CA • On-site

$56.25 - $71.75/hr

Full-time

Posted 28 days ago

Job description

Mainframe Systems Programmer/Mainframe Database Administrator (DBA)
Downey, CA
12+ months
Required Skills:
The Mainframe Systems Programmer/DBA for Legacy Systems manages different types of databases, such as hierarchical (IMS), relational (DB2), and file-based (ADABAS), and is responsible for planning and upgrading the database environments on a County-established basis; verifying the health of all the databases; database administration technical consulting for application and operations teams for the purpose of project planning/development; maintenance on production database systems; performance of technical reviews for existing systems that utilize one of the following database management systems (DBMS): ADABAS, DB2 or IMS; performance of evaluations for the purposes of selecting new or fine-tuning existing DBMS software; consultation with project development teams to provide recommendations on database design; development of logical and physical database designs; creation of overviews of logical database designs; creation of physical databases; database capacity planning; development and use of backup and recovery procedures for databases; database performance monitoring; database space monitoring; database reorganizations; database replication; database compression and database partitioning. The following technology skill sets are required to perform in this classification. IBM: Z/OS, IMS, DB2, ADABAS, SMP/E, JCL, IMS DB/DC, CICS, ACF2, ASSEMBLER/COBOL/REXX, IBM FILE MANAGER, DELTA/IMS, NATURAL/ SUPERNAT, ENTIREX, CA SPOOL, IMS & DB2 BMC Tools, N20/TRIM.
This classification must have a minimum of seven (7) years of experience as a Systems Programming/ DBA, with at least three (3) years of that experience in a lead role.
This classification requires the possession of a bachelor's degree in an IT-related or engineering field.
Desired Skills:
Z/OS 2.4,HCD/IODEF , Z13S,Z15,SMP/E, ASSEMBLER, JCL, COBOL,ACF2,SYSPLEX coupling facility,, HMC (Processor Interface), OSA (Networking Interface), ICC (Integrated Console Controller), FICON (Fiber connectivity to peripheral devices),z/OS Open System and Unix Systems Services (USS) on the Mainframe. ,CLIST, REXX,, FICON switch configuration and definition in HCD, Server Time Protocol (STP) configuration.
15 Years of experience with Z/OS operating system upgrade, 10 Years of experience with Mainframe hardware upgrade projects. 6 Years of experience with HCD & HMC. 4 Years of experience with DB2 or IMS or IBM Tools installation. 2 Years of Experience with mainframe storage.
Additional Information: This is not Mainframe application developer role. This is strictly Z/OS System programmer role.
Regards
Sunil Damagalla
West Advanced Technologies, Inc
E: sunil.d@wati.com D: 279-666-5837

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