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Mainframe System Programmer Jobs in California (NOW HIRING)

Xpertiz Inc

Mainframe developer

Sacramento, CA

$53.25 - $68.50/hr

Mainframe Developer Location : Sacramento, CA, USA (Locals Preferred) Job Type : Hybrid Visa Type ... Design, develop, test, and maintain applications on IBM Mainframe systems * Develop and support ...

Vertisystem Inc.

Systems Programmer/DBA

Downey, CA

Downey, CA Duration: 12 months Position Description A Mainframe Systems Programmer/DBA is responsible for leading and/or supporting the most complex database upgrade projects, modification ...

LinQ Global Group.

Mainframe Developer

Sacramento, CA · On-site

$53.25 - $68.50/hr

Mainframe Senior Application Developer Mandatory Qualifications (MQ ... A minimum of five (5) years of experience in electronic data processing systems study, design, and ...

Calance US

Mainframe Developer

Torrance, CA · On-site

$66.65/hr

We are hiring Mainframe Developer for a Contract position in Torrance, CA CALL US NOW for immediate ... Experience with Fidelity Information Systems (FIS) - Systematics ===== ===== Calance Consultant ...

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How much do mainframe system programmer jobs pay per hour?

As of Jun 6, 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 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 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.
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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 1% As Needed, 86% Full Time, and 13% Part Time. Highlights an 92% Physical, 3% Hybrid, and 5% Remote job distribution, with an average salary of $119,422 per year, or $57.4 per hour.

Mainframe developer

Xpertiz Inc

Sacramento, CA

$53.25 - $68.50/hr

Other

Posted 5 hours ago

Job description

Job Title : Mainframe Developer
Location : Sacramento, CA, USA (Locals Preferred)
Job Type : Hybrid
Visa Type: Citizen-EAD/-EAD
Duration: 12+ Months  
Job Summary

We are seeking an experienced Mainframe Developer with 7+ years of hands-on experience in designing, developing, and maintaining enterprise-level applications on IBM Mainframe systems. The ideal candidate will have strong expertise in COBOL, JCL, DB2, and CICS, along with experience in production support and system enhancements.

Key Responsibilities
  • Design, develop, test, and maintain applications on IBM Mainframe systems
  • Develop and support batch and online processes using COBOL, JCL, DB2, and CICS
  • Analyze business requirements and translate them into technical solutions
  • Perform code reviews, debugging, and performance tuning
  • Work on production support, incident resolution, and root cause analysis
  • Collaborate with cross-functional teams including business analysts, QA, and infrastructure teams
  • Participate in system upgrades, enhancements, and data migrations
  • Ensure adherence to coding standards, security policies, and best practices
  • Document technical designs, processes, and system changes
Required Skills
  • 7+ years of experience in Mainframe development
  • Strong hands-on experience with:
    • COBOL
    • JCL
    • DB2
    • CICS
    • VSAM
  • Experience with IBM z/OS environment
  • Good understanding of batch processing and online transaction systems
  • Strong SQL and DB2 stored procedures knowledge
  • Experience in debugging, performance tuning, and optimization
  • Familiarity with version control and change management tools (Endevor, Changeman, etc.)

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