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Mainframe Jobs in California (NOW HIRING)

Calance US

Mainframe Developer $66.50

Torrance, CA

$66.65/hr

We are hiring Mainframe Developer $66.50 for a Contract position in Torrance, CA CALL US NOW for immediate consideration! Click Apply on Web or Apply Now to view our recruiter s contact info and ...

iSpace, Inc

Senior Mainframe COBOL Developer

Los Angeles, CA · On-site

$52.75 - $68/hr

We are Seeking a Senior Mainframe COBOL Developer with a strong background in enterprise financial systems. The ideal candidate will support mission-critical mainframe applications, troubleshoot ...

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How much do mainframe jobs pay per hour?

As of Aug 20, 2026, the average hourly pay for mainframe in California is $52.68, according to ZipRecruiter salary data. Most workers in this role earn between $46.49 and $59.81 per hour, depending on experience, location, and employer.

What is a mainframe?

Mainframes are powerful computers used mainly by large organizations for critical applications, bulk data processing, large-scale transaction processing, and enterprise resource planning. They are known for their reliability, scalability, and security, making them essential for industries like banking, healthcare, and government. Mainframes can handle thousands of users and transactions simultaneously, supporting the core operations of many businesses.

What are the key skills and qualifications needed to thrive as a mainframe developer, and why are they important?

To excel as a Mainframe Developer, a strong background in COBOL, JCL, mainframe operating systems (like z/OS), and database management is essential, often supported by a degree in computer science or a related field. Familiarity with tools such as IBM DB2, CICS, VSAM, and mainframe version control systems is typically required, and certifications like IBM Certified System Programmer can be advantageous. Analytical thinking, problem-solving abilities, and effective communication are important soft skills for identifying issues and collaborating with cross-functional teams. These skills ensure reliable maintenance, development, and modernization of mission-critical legacy systems that support large-scale business operations.

What are some typical challenges faced by mainframe professionals when integrating legacy systems with modern technologies?

Mainframe professionals often encounter challenges when integrating legacy systems with newer technologies, such as ensuring data compatibility, managing security protocols, and minimizing downtime during migration. These tasks require a deep understanding of both the existing mainframe architecture and the modern platforms being introduced. Collaboration with cross-functional teams—including application developers, security specialists, and project managers—is essential to ensure seamless integration and to address potential issues proactively. Staying updated on the latest integration tools and best practices also helps in overcoming these challenges efficiently.

What is the difference between Mainframe vs Mainframe Developer?

AspectMainframeMainframe Developer
Primary RoleMaintains and manages mainframe hardware and systemsDesigns, develops, and tests mainframe applications
Skills & CertificationsKnowledge of mainframe hardware, OS, and basic scriptingProficiency in COBOL, JCL, and mainframe programming languages
Work EnvironmentData centers, enterprise IT departmentsDevelopment teams within mainframe environments
Industry UsageUsed by organizations with legacy systemsDevelops and maintains those legacy systems

While Mainframe professionals focus on maintaining the hardware and system infrastructure, Mainframe Developers specialize in creating and updating mainframe applications. Both roles require knowledge of mainframe environments, but their responsibilities differ significantly within the same industry.

Is mainframe a good career option?

Mainframe careers involve working with large-scale computer systems used by many organizations for critical applications. The role typically requires knowledge of programming languages like COBOL, skills in system maintenance, and certifications such as IBM Certified System Programmer. It offers stable employment opportunities and competitive salaries due to the specialized skill set involved.
More about Mainframe jobs

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

The most popular types of Mainframe jobs in California are:

What are popular job titles related to Mainframe jobs in California?

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

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

The top searched job categories for Mainframe jobs in California are:

What cities in California are hiring for Mainframe jobs?

Cities in California with the most Mainframe job openings:

Mainframe jobs near you
Infographic showing various Mainframe job openings in California as of August 2026, with employment types broken down into 80% Full Time, 4% Part Time, and 16% Contract. Highlights an 91% In-person, 4% Hybrid, and 5% Remote job distribution, with an average salary of $109,572 per year, or $52.7 per hour.

Senior Mainframe Support Analyst

Ruri Software Technologies LLC

San Bernardino, CA • On-site

Full-time

Re-posted 2 days ago

Job description

Job title: Senior Mainframe Support Analyst
Location: San Bernardino, CA
Durataion:10+
Role Summary
The Mainframe Support Analyst will provide L2/L3 technical support for IBM z/OS mainframe applications, ensuring stability, performance, and timely resolution of incidents across non-production and production environments. The role is critical for batch operations, DB2 support, deployment activities, and root-cause analysis, particularly in large retail and supply-chain transformation programs.
Key Responsibilities
Mainframe Application & Production Support (L2/L3)
• Provide end-to-end support for mainframe applications running on IBM z/OS.
• Analyze and resolve incidents related to JCL abends, DB2 errors, data issues, and code defects.
• Perform root-cause analysis by reviewing COBOL, DB2 programs, and batch execution logs.
• Support production and non-production environments, ensuring SLA adherence.
Batch Processing & Deployment
• Build and maintain batch jobs by copying and parameterizing JCLs across environments.
• Schedule, automate, and monitor end-to-end batch cycles.
• Resolve batch failures and performance issues.
• Support code promotion and deployment activities across test and production environments.
• Manage dataset setup, environment parameterization, and deployment prerequisites.
DB2 DBA & Data Support
• Perform DB2 L2/L3 support activities including:
o Creation, alteration, and maintenance of DB2 objects.
o Plan and package creation, binding, and rebinding.
o DB2 utilities such as UNLOAD, LOAD, RUNSTATS, and REORG.
• Coordinate with RACF/security teams to ensure proper DB2 access and controls.
• Perform DB2 backups, restores, and image copy management to support testing needs.
CICS, MQ & File Transfers
• Support CICS applications by navigating screens and analyzing logs.
• Understand and troubleshoot MQ message flows and integrations.
• Manage Connect: Direct file transfers between systems and support batch file movements.
Automation & Continuous Improvement
• Analyze and enhance existing REXX scripts for automation.
• Identify opportunities to automate repetitive support tasks (batch scheduling, deployments, retrofits).
• Support environment retrofits such as DB2 structural changes, static data updates, and package rebinds.
Required Skills & Experience
• Mainframe Technologies: IBM z/OS, COBOL, JCL
• Databases: DB2 (L2/L3 support, utilities, performance tuning basics)
• Middleware: CICS, IBM MQ (working knowledge)
• Batch & Scheduling: CA-7 / ESP or equivalent schedulers
• Automation: REXX scripting
• Security: RACF (working knowledge)
• Experience: 5-10+ years in Mainframe Application Support / Operations
• Domain: Retail / Supply Chain experience is strongly preferred
Nice to Have
• Experience supporting large retail transformation or supply-chain modernization programs
• Exposure to mainframe modernization or automation initiatives
• Strong documentation and SOP creation skills
Years of Experience: 14.00 Years of Experience

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