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Mainframe Support Jobs in California (NOW HIRING)

Mainframe/ITOM

Los Angeles, CA ยท On-site

$115K - $213K/yr

Project Context This position supports DXC's managed infrastructure services delivery for a major automotive manufacturing client. The engineer operates within DXC's IT Operations Management (ITOM ...

Project Context This position supports DXC's managed infrastructure services delivery for a major automotive manufacturing client. The engineer operates within DXC's IT Operations Management (ITOM ...

This person will work in a team environment supporting multiple systems in a highly redundant and robust mainframe environment. Participate in project teams to implement new capabilities and ...

Showing results 41-60

Mainframe Support information

See California salary details

$9

$52

$71

How much do mainframe support jobs pay per hour?

As of Aug 25, 2026, the average hourly pay for mainframe support 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 support?

A Mainframe Support job involves maintaining, troubleshooting, and optimizing mainframe systems to ensure smooth operations. Responsibilities typically include monitoring system performance, resolving technical issues, applying software updates, and ensuring data security. Mainframe Support professionals work with legacy systems, batch processing, and various programming languages like COBOL or JCL. Their role is critical in industries like banking, healthcare, and government, where mainframes handle large-scale transactions and data processing.

What are the typical daily responsibilities of a mainframe support?

Mainframe Support professionals typically monitor system performance, respond to incidents or service requests, and perform routine maintenance to ensure mainframe systems run smoothly. Their day may include troubleshooting job failures, updating software or system configurations, and working with application teams to resolve integration or data transfer issues. They often participate in on-call rotations and collaborate closely with other IT teams, such as network or security specialists. These responsibilities are essential to minimize downtime and maintain uninterrupted business operations.

What are the key skills and qualifications needed to thrive in mainframe support, and why are they important?

To thrive as a Mainframe Support professional, you need a solid understanding of mainframe operating systems (such as z/OS), basic programming skills, and troubleshooting abilities, typically supported by a degree in computer science or equivalent experience. Proficiency with tools like IBM ISPF, SDSF, JCL, and familiarity with monitoring and batch processing tools, as well as certifications like IBM Certified System Administrator, are often expected. Strong analytical thinking, communication, and teamwork skills are crucial for effectively addressing technical issues and collaborating with cross-functional teams. These abilities ensure prompt issue resolution and maintain the stability and reliability of critical business systems.

Is mainframe support still in demand?

Mainframe support professionals are still in demand due to the continued reliance of large organizations on mainframe systems for critical operations. Skills in COBOL, JCL, and mainframe troubleshooting remain valuable, especially in finance, government, and insurance sectors where legacy systems are prevalent.

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

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

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

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

Infographic showing various Mainframe Support job openings in California as of August 2026, with employment types broken down into 1% As Needed, 70% Full Time, 23% Part Time, and 6% Contract. Highlights an 87% Physical, 3% Hybrid, and 10% Remote job distribution, with an average salary of $109,572 per year, or $52.7 per hour.

Senior Application Programmer - Mainframe Systems

Trinus

Downey, CA โ€ข On-site

Contractor

Re-posted 18 days ago


Job description

Role: Senior Application Programmer for Mainframe Systems

Location: Downey, CA

Background Checks: Yes

Position Description:

  • A Senior Application Programmer for Mainframe Systems is responsible for leading and/or working on the most complex IT applications design, documentation, development, modification, testing, installation, implementation, and support of new or existing applications software.
  • The Senior Application Programmer for Mainframe Systems is responsible for analyzing and refining systems requirements; translating systems requirements into applications prototypes; planning and designing systems architecture; writing, debugging and maintaining code; determining and designing applications architecture; determining output media/formats; designing user interfaces; working with customers to test applications; assuring software and systems quality and functionality; integrating hardware and software components; writing and maintaining program documentation; evaluating new applications software technologies; and/or ensuring the rigorous application of information security/information assurance policies, principles and practices to the delivery of application software services.  

Skills Required:

  • The Senior Application Programmer for Mainframe Systems will possess knowledge and experience in applications software development principles and methods sufficient to participate in the design, development, testing and implementation of new or modified applications software; organization’s operational environment; software design principles, methods and approaches; principles, methods and procedures for designing, developing, optimizing and integrating new and/or reusable systems components; pertinent government regulations; infrastructure requirements, database management principles and methodologies, including data structures, data modeling, data warehousing and transaction processing; functionality and operability of the current operating environment; systems engineering concepts and factors such as structured design, supportability, reliability, scalability and maintainability; optimization concepts and methods; establish and maintain cooperative working relationships with those contacted in the course of the work; and speak and write effectively and prepare effective reports.            

Additional Skills Required:

  • Must have a strong background in ADABAS/NATURAL, JCL, TSO/ISPF, Predict, and N2O.      

Experience Required:

  • This classification must have a minimum of seven (7) years of experience in electronic data processing systems design and programming with one or more of the software set forth below.
  • LANGUAGES: COBOL, Natural/ SuperNatural, IMS/DB/DC, DB2/SQL, Assembler, SAS, CICS; MF FOCUS; TOOLS/UTILITIES: MVS JCL, MVS TSO/ISPF, IBM OPTIM, FILE Manager, SPUFI, ICEMAN/ICETOOLS, SORT, VSAM, CLIST, FTP, DYL260/280, CA Gen (CoolGen), CA Endevor, CA Spool, CA OM Web Viewer, IBM Websphere, Debugger, N2O; DATABASES: DB2, IMS, ADABAS, FOCUS; OS: z/OS; OTHER: EntireX, ASP, HTML, Cloverleaf.              

Additional Experience Required:

  • This classification must have a minimum of seven (7) years of demonstrated experience in ADABAS/NATURAL programming within a mainframe environment, with proficiency in the following areas:
  • Language: Natural
  • Database: ADABAS
  • Tools and Utilities: JCL, TSO/ISPF, Predict, N2O, CA Spool
  • OS: z/OS
  • Additional Technologies: EntireX, SuperNatural, Cloverleaf

Education Required:

  • This classification requires the possession of a bachelor’s degree in an IT-related or Computer Science field. Additional qualifying experience may be substituted for the required education on a year-for-year basis.        

Additional Information:

  • This assignment will require onsite work 5 days (M-F) per week initially for at least 6 months and gradually allowing up to 2 days telework depending on the current project requirements. At least 7 years' experience in ADABAS/NATURAL programming is mandatory.

Trinus Corporation, a leading provider of technology solutions and services with over 25 years of experience, is a certified WBE/MBE/SBE/SDB firm accredited by WBENC, NMSDC, and SBA.

Our mission is to shape the future of work by aligning the right mix of people, process, technology, and innovation to efficiently meet our clients' business objectives.

At Trinus, we understand that finding the right opportunity is pivotal in your career journey. Our staffing services go beyond mere placements; they are about matching your skills and aspirations with the perfect fit.

To learn more about us, please visit our website www.trinus.com