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Mainframe Development Jobs in California (NOW HIRING)

Triunity Software

Mainframe Developer

Los Angeles, CA · On-site

$100K - $110K/yr

Training & development About the Role: Triunity Software is looking for a talented Mainframe professional to join our growing team in Los Angeles, CA. This is an exciting opportunity to work on ...

Accenture

Mainframe Specialist

Mountain View, CA

$70K - $196K/yr

Lead the design, development, and modernization of mainframe applications, enforcing best practices and architectural standards. * Evaluate legacy systems and propose actionable modernization ...

Accenture

Mainframe Specialist

San Francisco, CA

$70K - $196K/yr

Lead the design, development, and modernization of mainframe applications, enforcing best practices and architectural standards. * Evaluate legacy systems and propose actionable modernization ...

Accenture

Mainframe Specialist

Irvine, CA

$70K - $196K/yr

Lead the design, development, and modernization of mainframe applications, enforcing best practices and architectural standards. * Evaluate legacy systems and propose actionable modernization ...

Accenture

Mainframe Specialist

Los Angeles, CA

$70K - $196K/yr

Lead the design, development, and modernization of mainframe applications, enforcing best practices and architectural standards. * Evaluate legacy systems and propose actionable modernization ...

Accenture

Mainframe Specialist

San Diego, CA

$70K - $196K/yr

Lead the design, development, and modernization of mainframe applications, enforcing best practices and architectural standards. * Evaluate legacy systems and propose actionable modernization ...

Accenture

Mainframe Specialist

Sacramento, CA

$70K - $196K/yr

Lead the design, development, and modernization of mainframe applications, enforcing best practices and architectural standards. * Evaluate legacy systems and propose actionable modernization ...

Accenture

Mainframe Specialist

Walnut Creek, CA

$70K - $196K/yr

Lead the design, development, and modernization of mainframe applications, enforcing best practices and architectural standards. * Evaluate legacy systems and propose actionable modernization ...

Sonsoft Inc

Mainframe Consultant

Irwindale, CA · On-site

We are growing at a steady pace specializing in the fields of Software Development, Software Consultancy and Information Technology Enabled Services. * At least 5 years of experience in Mainframe ...

Sonsoft Inc

Mainframe Consultant

Irwindale, CA

Sonsoft Inc. is growing at a steady pace specializing in the fields of Software Development ... At least 5 years of experience in Mainframe Technologies (COBOL, CICS, JCL, DB2) * At least 5 years ...

Info Way Solutions

mainframe developer to cloud

Fremont, CA · On-site

$53.75 - $69.25/hr

... skill development • Experience in transformation of applications from Mainframe to Distributed Platform • Ability to optimize Mainframe applications by extending Mainframe application as a ...

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All JobsMainframe Development JobsMainframe Development Jobs in California

Mainframe Development information

See California salary details

$27.9K

$88.8K

$141K

How much do mainframe development jobs pay per year?

As of Sep 8, 2026, the average yearly pay for mainframe development in California is $88,779.00, according to ZipRecruiter salary data. Most workers in this role earn between $70,014.00 and $109,673.00 per year, depending on experience, location, and employer.

What is the difference between Mainframe Development vs Mainframe Testing?

AspectMainframe DevelopmentMainframe Testing
Primary FocusDesigning, coding, and maintaining mainframe applicationsVerifying and validating mainframe applications for bugs and performance
Required SkillsCOBOL, JCL, DB2, CICSTesting tools, scripting, debugging, knowledge of mainframe environments
Work EnvironmentDevelopment teams, coding in mainframe environmentsQuality assurance teams, testing labs, mainframe systems
CertificationsCOBOL certifications, IBM mainframe certificationsISTQB, mainframe testing certifications

While Mainframe Development involves creating and maintaining mainframe applications, Mainframe Testing focuses on ensuring those applications work correctly and efficiently. Both roles require knowledge of mainframe environments and related skills, but they serve different stages in the software lifecycle.

Is mainframe development a good career?

Mainframe development is a stable career with high demand in industries like finance and government that rely on legacy systems. It requires knowledge of languages such as COBOL and tools like JCL, and often offers competitive salaries and job security due to the specialized skills involved.

Is mainframe development still in demand?

Mainframe development remains in demand in industries such as finance, government, and healthcare that rely on legacy systems for critical operations. Skilled mainframe developers with knowledge of COBOL, JCL, and mainframe environments are sought after to maintain and modernize these systems, ensuring their continued relevance in enterprise IT infrastructure.

What does a mainframe developer do?

A mainframe developer designs, codes, tests, and maintains applications running on mainframe computers, often using languages like COBOL, PL/I, or Assembler. They work in environments that require high reliability and security, and typically collaborate with system administrators and analysts to ensure smooth operation of enterprise systems.
Mainframe Development jobs near you
Infographic showing various Mainframe Development job openings in California as of August 2026, with employment types broken down into 1% As Needed, 86% Full Time, 11% Part Time, and 2% Contract. Highlights an 89% Physical, 3% Hybrid, and 8% Remote job distribution, with an average salary of $88,779 per year, or $42.7 per hour.

Mainframe Developer

Triunity Software, Inc.

Los Angeles, CA • On-site

$100 - $125/hr

Other

Medical

Re-posted 8 days ago

Job description

Benefits:

  • Bonus based on performance

  • Health insurance

  • Training & development


About the Role:

Triunity Software is looking for a talented Mainframe professional to join our growing team in Los Angeles, CA. This is an exciting opportunity to work on mission-critical systems and make a real impact in a dynamic, technology-driven environment. If you're passionate about mainframe technologies and ready to take your career to the next level, we want to hear from you!


Responsibilities:

  • Design, develop, and maintain mainframe applications and systems

  • Write and optimize COBOL, JCL, and other mainframe-based code

  • Perform system analysis, troubleshooting, and debugging of mainframe environments

  • Collaborate with cross-functional teams to support business and technical requirements

  • Monitor mainframe performance and implement tuning improvements

  • Participate in system migrations, upgrades, and modernization initiatives

  • Document technical specifications, processes, and procedures


Requirements:

  • Proven experience in mainframe development or administration (IBM z/OS preferred)

  • Proficiency in COBOL, JCL, CICS, DB2, or related mainframe technologies

  • Strong analytical and problem-solving skills in complex system environments

  • Experience with mainframe performance monitoring and tuning tools

  • Familiarity with SDLC methodologies and Agile development practices

  • Excellent communication and collaboration skills

  • Bachelor's degree in Computer Science, Information Technology, or equivalent experience

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Triunity Software logo

About Triunity Software

Sourced by ZipRecruiter

Triunity is a Product Development, Staff Augmentation, and Consulting Services company providing solutions and services in North America. We provide IT services and technology solutions to various business verticals like Healthcare, Pharma, Banking, Finance, etc. Our goal is to develop a long-term partnership with businesses and help them get a competitive advantage by providing IT infrastructure and software platforms.

Industry

It services

Company size

11 - 50 Employees

Headquarters location

Iselin, NJ, US

Year founded

2021

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