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Mainframes Developer Jobs in Indiana (NOW HIRING)

SOSi

Sr. Systems Engineer

Indianapolis, IN · On-site

$99K - $136K/yr

SOSi is seeking a Senior Systems Engineer to support operations and sustainment of a mission ... Strong IBM mainframe experience. * IBM z/OS, IDMS, Oracle, Cognos, Broadcom Endevor, Production ...

SOSi

Sr. Systems Engineer

Indianapolis, IN · On-site +1

$99K - $136K/yr

SOSi is seeking a Senior Systems Engineer to support operations and sustainment of a mission ... Strong IBM mainframe experience. * IBM z/OS, IDMS, Oracle, Cognos, Broadcom Endevor, Production ...

A.C. Coy

Cobol/IDMS Developer (Remote)

Indianapolis, IN · Remote

$48 - $65/hr

Bachelor's degree in Computer Science, Software Engineering, or a related field. * 4+ years of IBM z/OS-based mainframe experience using COBOL, CICS, JCL, TSO, ISPF, Endevor, and REXX. * Strong ...

A.C. Coy

Cobol/IDMS Developer (Remote)

Indianapolis, IN · On-site +1

$48 - $65/hr

Bachelor's degree in Computer Science, Software Engineering, or a related field. * 4+ years of IBM z/OS-based mainframe experience using COBOL, CICS, JCL, TSO, ISPF, Endevor, and REXX. * Strong ...

A.C. Coy

Cobol/IDMS Developer (Remote)

Indianapolis, IN · Remote

$48 - $65/hr

Bachelor's degree in Computer Science, Software Engineering, or a related field. * 4+ years of IBM z/OS-based mainframe experience using COBOL, CICS, JCL, TSO, ISPF, Endevor, and REXX. * Strong ...

A.C. Coy

Cobol/IDMS Developer (Remote)

Indianapolis, IN · Remote

$48 - $65/hr

Bachelor's degree in Computer Science, Software Engineering, or a related field required. * 8+ years of IBM z/OS-based mainframe experience using COBOL, JCL, TSO, ISPF, Endevor, and REXX. * Expertise ...

A.C. Coy

Cobol/IDMS Developer (Remote)

Indianapolis, IN · Remote

$48 - $65/hr

Bachelor's degree in Computer Science, Software Engineering, or a related field required. * 8+ years of IBM z/OS-based mainframe experience using COBOL, JCL, TSO, ISPF, Endevor, and REXX. * Expertise ...

A.C. Coy

Cobol/IDMS Developer (Remote)

Indianapolis, IN · On-site +1

$48 - $65/hr

Bachelor's degree in Computer Science, Software Engineering, or a related field required. * 8+ years of IBM z/OS-based mainframe experience using COBOL, JCL, TSO, ISPF, Endevor, and REXX. * Expertise ...

A.C. Coy

FOCUS COBOL CICS Developer (Remote)

Indianapolis, IN · On-site +1

$48 - $65/hr

Bachelor's degree in computer science, software engineering or relevant field is recommended. * 5+ years of mainframe experience using COBOL, CICS, JCL, DB2. * Prior experience working with FOCUS ...

Huntington

Site Reliability Engineer

Indianapolis, IN · On-site

$54.50 - $72.50/hr

Support Mainframe technologies including z/OS, MVS, CICS, MQ, DB2, COBOL, JCL, TSO/ISPF, Easytrieve, IBM Utilities, SORT, FileAid, Xpediter, ChangeMan, AbendAid, and related tools. * Monitor and ...

Liberty Mutual

Senior Test Engineer

Indianapolis, IN

Experience integrating automated testing into CI/CD pipelines using tools such as Jenkins, GitHub Actions, Azure DevOps, or similar platforms. Working knowledge of mainframe technologies, for backend ...

Vergence

Test Analyst

Indianapolis, IN · On-site

$39.48/hr

Work with developers to resolve problems and ensure quality standards are met. * Data validation: Validate data flow between mainframe systems and other interfaces. * Collaboration: Work with Test ...

campus4tech

Senior Test Analyst

Indianapolis, IN · On-site +1

Work with developers to resolve problems and ensure quality standards are met. Data validation: Validate data flow between mainframe systems and other interfaces. Collaboration: Work with Test ...

Regal Rexnord

Design Engineer II

Fort Wayne, IN · Hybrid

... end frames, mainframes, etc.) meeting market requirements and cost targets for New Product ... Managing engineering work and priorities of the project team to align with milestones and stretch ...

Regal Rexnord

Design Engineer III

Fort Wayne, IN · Hybrid

... end frames, mainframes, etc.) meeting market requirements and cost targets for New Product ... Managing engineering work and priorities of the project team to align with milestones and stretch ...

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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 Indiana?

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

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

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

Mainframes Developer jobs near you
Infographic showing various Mainframes Developer job openings in Indiana as of August 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution.

Sr. Systems Engineer

SOSi

Indianapolis, IN • On-site

$99K - $136K/yr

Full-time

Posted 22 days ago

Job description

Company Description
Founded in 1989 and headquartered in Reston, Virginia, SOSi is a private defense and government solutions business specializing in advanced technology systems and mission support. Its capabilities include data science, software development, network engineering, intelligence, surveillance, and reconnaissance (ISR), and logistics.
Job Description
SOSi is seeking a Senior Systems Engineer to support operations and sustainment of a mission-critical enterprise application supporting federal business operations.
Job Description
The Senior Systems Engineer will provide technical leadership supporting production operations, infrastructure integration, database technologies, release management, and enterprise system performance within a large IBM mainframe environment.
Responsibilities
  • Support IBM z/OS production environments.
  • Maintain and support IDMS database environments.
  • Support production deployments and release activities.
  • Troubleshoot system performance issues and production incidents.
  • Support configuration management and technical documentation.
  • Coordinate system changes across technical teams.

Qualifications
  • Bachelor's degree in Engineering, Computer Science, Information Systems, or related field. Equivalent experience may be substituted.
  • 10+ years supporting enterprise systems.
  • Experience supporting mission-critical production operations.
  • Strong IBM mainframe experience.
  • IBM z/OS, IDMS, Oracle, Cognos, Broadcom Endevor, Production Operations, System Integration.
  • Ability to obtain Public Trust clearance.

Preferred:
  • Large-scale financial or ERP systems.
  • Federal enterprise environments.

Additional Information
Work Environment
  • Normal office conditions with potential to perform duties in deployed locations
  • Remote or Hybrid work model
  • Core hours of operation are Monday through Friday, 0600 - 1700.
  • May be requested to work evenings and weekends to meet program and contract needs

Working at SOSi
All interested individuals will receive consideration and will not be discriminated against for any reason.

Apply