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Mainframe Developer Part Time Jobs in California

Mainframe Developer Part Time information

See California salary details

$9

$52

$71

How much do mainframe developer part time jobs pay per hour?

As of Jun 20, 2026, the average hourly pay for mainframe developer part time 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 Developer Part Time job?

A Mainframe Developer Part Time job involves designing, coding, testing, and maintaining software applications on mainframe systems while working a reduced or flexible schedule. Responsibilities typically include working with technologies like COBOL, JCL, DB2, and CICS to support business-critical applications. Part-time developers may assist in system upgrades, debugging, and performance optimization. This role is ideal for professionals seeking flexibility, such as students, retirees, or those balancing other commitments.

What are the key skills and qualifications needed to thrive in the Mainframe Developer Part Time position, and why are they important?

To thrive as a Mainframe Developer Part Time, you need strong skills in COBOL, JCL, DB2, and mainframe operating systems, typically backed by a degree in computer science or related field. Familiarity with mainframe tools such as IBM z/OS, CICS, and knowledge of version control systems or relevant certifications (e.g., IBM Certified System Programmer) are often required. Attention to detail, problem-solving abilities, and effective communication make candidates stand out. These skills ensure efficient maintenance, troubleshooting, and enhancement of critical business applications that rely on mainframe technologies.

What types of projects and responsibilities can I expect as a part-time Mainframe Developer?

As a part-time Mainframe Developer, you'll typically work on maintaining, enhancing, and troubleshooting legacy mainframe applications, often collaborating closely with full-time developers and business analysts. Your weekly tasks may include writing or modifying COBOL programs, optimizing JCL scripts, performing system integrations, and participating in code reviews or defect resolutions. Many employers offer flexible scheduling, making it possible to work remotely or during off-hours to minimize disruption to ongoing business operations. You may also contribute to documentation, testing, or modernization initiatives, gaining valuable exposure to both established and evolving technologies. This hands-on experience is an excellent opportunity to build specialized skills and advance your career within organizations that depend on mainframe systems.

What are the most commonly searched types of Mainframe Developer jobs in California? The most popular types of Mainframe Developer jobs in California are:
What are popular job titles related to Mainframe Developer Part Time jobs in California? For Mainframe Developer Part Time jobs in California, the most frequently searched job titles are:
What job categories do people searching Mainframe Developer Part Time jobs in California look for? The top searched job categories for Mainframe Developer Part Time jobs in California are:
What cities in California are hiring for Mainframe Developer Part Time jobs? Cities in California with the most Mainframe Developer Part Time job openings:

CIS Application Support Engineer (Customer/1 + COBOL) - Remote - 12+ Months

Synergy Solutions

San Francisco, CA • Remote

$90 - $110/hr

Part-time, Contractor

Posted 17 days ago


Job description

This is a remote position.

We’re looking for an experienced CIS Application Support Engineer with hands‑on expertise in Customer/1 (C/1) and COBOL to support, maintain, and enhance a legacy Customer Information System for a major utility. This role focuses on application maintenance, defect resolution, batch job support, and small enhancements that keep the CIS stable and running.

If you’ve worked in utility billing systems and still enjoy solving problems in COBOL, this is a long‑term, stable contract where your experience truly matters.


What You’ll Do
  • Support and maintain the Customer/1 CIS application

  • Troubleshoot and resolve production issues in COBOL, batch jobs, and related components

  • Analyze billing, metering, payments, collections, and customer workflows

  • Implement small enhancements, fixes, and logic updates

  • Work with business users to understand issues and translate them into technical solutions

  • Ensure system stability, data integrity, and accurate billing operations

  • Participate in on‑call or after‑hours support rotations (if required)



RequirementsWhat You Bring
  • Hands‑on experience with Customer/1 (C/1) — required

  • Strong COBOL programming and maintenance skills

  • Experience supporting CIS systems in utilities (electric, gas, water)

  • Understanding of billing cycles, meter reads, payments, adjustments, and customer account logic

  • Ability to troubleshoot complex legacy code and batch processes

  • Strong analytical skills and comfort working independently

  • Bonus: experience with mainframe environments, JCL, DB2, or related legacy tech



BenefitsRole Details
  • Remote (US‑based)

  • 12+ month contract with likely extensions

  • Start ASAP

  • Part time option is also available.