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Mainframes Developer Jobs in California (NOW HIRING)

Broadcom

Mainframe QA Engineer

San Jose, CA

Bachelor's degree in Electrical Engineer or Computer Science or global equivalent in a related field. Work Experience: 5+ or more years of experience in Mainframe software development or a related ...

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Mainframes Developer information

What is the difference between Mainframes Developer vs Mainframes Analyst?

AspectMainframes DeveloperMainframes Analyst
Required CredentialsTypically a degree in Computer Science or related field; certifications like IBM Certified SpecialistSimilar credentials; often holds certifications in mainframe systems and analysis
Work EnvironmentDevelops, codes, and tests mainframe applications in a software development settingAnalyzes existing mainframe systems, gathers requirements, and supports system improvements
Employer & Industry UsageUsed by banks, insurance companies, and large enterprises for application developmentEmployed in similar industries for system analysis, troubleshooting, and process optimization

While both roles require knowledge of mainframe systems and similar credentials, Mainframes Developers focus on creating and maintaining mainframe applications, whereas Mainframes Analysts analyze existing systems to improve performance and efficiency. Both roles are vital in large enterprise IT environments.

Is a mainframes developer a good career?

A mainframes developer is a specialized IT professional who maintains and develops applications on mainframe systems, which are used by large organizations for critical data processing. The role offers stable employment, competitive salaries, and opportunities to work with legacy systems and mainframe programming languages like COBOL. However, it requires specific skills and certifications, and the field may have limited growth compared to emerging technologies.

Is a mainframes developer still in demand?

Mainframes developers are still in demand in industries such as finance, government, and healthcare that rely on legacy systems. They typically work with COBOL, JCL, and mainframe environments, and demand persists due to the ongoing need to maintain and upgrade existing mainframe applications. However, the number of new positions is limited compared to emerging technologies, and skills in mainframe modernization are increasingly valued.

What does a mainframes developer do?

A mainframes developer designs, codes, tests, and maintains applications running on mainframe computers, often using languages like COBOL, PL/I, or Assembler. They ensure the stability, security, and efficiency of large-scale enterprise systems, frequently working with legacy code and mainframe-specific tools in a structured environment.

What are popular job titles related to Mainframes Developer jobs in California?

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

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

The top searched job categories for Mainframes Developer jobs in California are:

What cities in California are hiring for Mainframes Developer jobs?

Cities in California with the most Mainframes Developer job openings:

Mainframes Developer jobs near you
Infographic showing various Mainframes Developer job openings in California as of August 2026, with employment types broken down into 76% Full Time, and 24% Contract. Highlights an 94% In-person, and 6% Remote job distribution.

Mainframe Onsite Lead

Ruri Software Technologies LLC

San Bernardino, CA • On-site

$50.25 - $64.75/hr

Full-time

This job post has expired 1 day ago. Applications are no longer accepted.

Job description

Job Title:- Mainframe Onsite Lead
Duration:- 8+ months
Location:- Onsite: 301 S. Tippecanoe Ave. San Bernardino, CA 92408
Job description/responsibilities:
- Understand requirements from specifications from Business Analyst & end-users
- Responsible for Several Iterations of Coding, Compilation, Application Build and Unit testing, and delivery of Assigned Modules
- Assist Post-delivery support and troubleshoot the current Mainframe environment
- Interact with other modules owners of the team for related program modules
- Enhance and main the existing mainframe applications.
- Should be able to independently analyze, design, debug, test, develop, and deploy changes in production.
- Should be able to manage the end-to-end service delivery for the Application Support team including 2 members Offshore team.
- Should be able to clearly understand the requirement and communicate with customer IT and business team.
Must have - Prior knowledge in Retail store system maintenance (Store Orders, Replenishment, Price Changes, etc.)
Nice to have - Knowledge in Distributed applications like Oracle SQL, Talend, B2Bi, Core FTP, etc.
Operational Services
i. Application Monitoring and Pager duties
ii. Batch Monitoring, and Ticketing tool monitoring
iii. Production System Upgrades support
iv. Month end/Year end activities
v. Holiday readiness and reporting
Top 3 skills:
1. Mainframe, COBOL, JCL, VSAM, Mainframe Coding using COBOL, CICS
2. Experience in product support engagements
3. Excellent communication skills

Apply