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Mainframes Developer Jobs in California (NOW HIRING)

ClifyX

MainFrame OS Developer

Torrance, CA

$50.25 - $64.75/hr

Mainframe Os Developer Strong business and analytical skills and excellent communication skills. Excellent skills in project life cycle; analysis and design, development, unit/system/user test plan ...

AgreeYa Solutions

Mainframe Systems Programmer

Downey, CA

$56.75 - $72.25/hr

Mainframe Systems Programmer/DBA is responsible for leading and/or supporting the most complex database upgrade projects, modification, installation, testing, implementation, maintenance and ...

ClifyX

Mainframe OS Developer - Torrance, CA

Torrance, CA

$50.25 - $64.75/hr

Mainframe Os Developer Strong business and analytical skills and excellent communication skills. Excellent skills in project life cycle; analysis and design, development, Unit/System/User Test plan ...

Mindlance

Mainframe System Administrator

Encino, CA

Responsibilities · Install, implement, test, tune and support IBM and 3rd party mainframe software. · Provide support for customers and application developers. · Disaster recovery preparedness by ...

WATI

IBM Mainframe Z/OS Systems Programmer

Downey, CA

$56.75 - $72.25/hr

IBM Mainframe Z/OS Systems Programmer Downey, CA 12 months Need someone local or who can relocate Description: Client seeks to obtain the services of consultant at the level of IBM Z/OS Systems ...

PTR Global

Python Developer

San Francisco, CA · On-site

$59.25 - $81.50/hr

The team is responsible for modernizing a core mainframe-based financial application by rewriting ... Client is seeking a Senior Software Engineer with deep backend expertise to join a Scrum-based ...

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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.

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 May 2026, with employment types broken down into 76% Full Time, and 24% Contract. Highlights an 94% In-person, and 6% Remote job distribution.
Mainframe Operator (Overnight 10:00pm to 6:30am )

Mainframe Operator (Overnight 10:00pm to 6:30am )

Genesis Global Recruiting Inc

Downey, CA

$50.75 - $65/hr

Other

Posted 24 days ago

Job description

We are seeking to hire a experience Information Technology Mainframe Operator. This is a direct hire opportunity in our Downey CA headquarters. and must be able to work overnight shifts. Must have a strong troubleshooting and analytical skills with logical thinking. Strong customer service, interpersonal, and detail-oriented skills. Knowledge of Microsoft Excel, Microsoft Word, and Microsoft Outlook. Fluent in reading, writing and oral communication in English.

Must have minimum of five (5) years of experience as a mainframe operator, with at least two (2) years of that experience in operating and administering IBM System p-Series/z-Series platform. No C2c or Sponsorship.

The Information Technology Mainframe Operator works under the direction of an Information Technology Systems Operations Supervisor who manages and oversees all aspects of work for the IBM mainframe systems. The Information Technology Mainframe Operator starts and stops system tasks, monitors the system consoles for unusual conditions, and works with the system programming and production control staff to ensure the health and normal operation of the systems.

The Information Technology Mainframe Operator is also responsible for starting and stopping the major subsystems, such as transaction processing systems, database systems, and the operating system itself. These "restart operations" include performing an orderly shutdown and startup of the system and its workloads when it is required. The Information Technology Mainframe Operator communicates with system programmers, who assist the operator in determining the proper course of action, and with the production control analyst, who works with the operator to make sure that production workloads are completing properly.

Requirements:

The Information Technology Mainframe Operator will possess knowledge in decision making; organizational awareness; problem solving; oral communication and writing skills. The following technology skill sets are required to perform in this classification: IBM, Z/OS, CICS, NATURAL/SUPERNAT, IMS, DB2, ADABAS, ACF2, ENTIREX, SMP/E, ASSEMBLER/COBOL/REXX, CA SPOOL, JCL, CONTROL-M, IMS & DB2 BMC Tools, IMS DB/DC, VTAM, TCPIP, NETVIEW, HMC/HOD/IODF, Tivoli, MVM, JES2, ESF, Linux, Unix, p-Series, z-Series, & VTS..

Additional Requirements:: Windows servers, Linux servers, and IBM Mainframe z/OS operating systems

Education Requirements:

Bachelor’s degree in IT

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