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Mainframe Z Os System Programmer Jobs in Indiana

SOSi

Sr. Software Engineer

Indianapolis, IN · On-site +1

$117K - $154K/yr

... systems and mission support. Its capabilities include data science, software development, network ... Develop and maintain COBOL applications within an IBM z/OS environment. * Analyze and resolve ...

SOSi

Sr. Software Engineer

Indianapolis, IN · On-site

$117K - $154K/yr

... systems and mission support. Its capabilities include data science, software development, network ... Develop and maintain COBOL applications within an IBM z/OS environment. * Analyze and resolve ...

SOSi

Systems Engineer III

Indianapolis, IN · On-site +1

... system. The Intermediate Systems Engineer will support day-to-day production operations, software ... Technical skills in IBM z/OS, JCL, Oracle, Cognos, Broadcom Endevor, Configuration Management ...

SOSi

Systems Engineer III

Indianapolis, IN · On-site +1

... system. The Intermediate Systems Engineer will support day-to-day production operations, software ... Technical skills in IBM z/OS, JCL, Oracle, Cognos, Broadcom Endevor, Configuration Management ...

SOSi

Systems Engineer III

Indianapolis, IN · On-site +1

... system. The Intermediate Systems Engineer will support day-to-day production operations, software ... Technical skills in IBM z/OS, JCL, Oracle, Cognos, Broadcom Endevor, Configuration Management ...

Dellfor Technologies

Java Architect

Indianapolis, IN · On-site

$60K/yr

Java EE framework and system development * Experience with use cases, process flows, and UML ... IBM Content Manager, Rational Application Developer, Clear Case, Clear Quest, DB2 on z/os, AIX.

A.C. Coy

Cobol/IDMS Developer (Remote)

Indianapolis, IN · Remote

$48 - $65/hr

Design, develop and modify software systems, using scientific analysis and mathematical models to ... of IBM z/OS-based mainframe experience using COBOL, CICS, JCL, TSO, ISPF, Endevor, and REXX.

A.C. Coy

Cobol/IDMS Developer (Remote)

Indianapolis, IN · Remote

$48 - $65/hr

Design, develop and modify software systems, using scientific analysis and mathematical models to ... of IBM z/OS-based mainframe experience using COBOL, CICS, JCL, TSO, ISPF, Endevor, and REXX.

A.C. Coy

Cobol/IDMS Developer (Remote)

Indianapolis, IN · On-site +1

$48 - $65/hr

Design, develop and modify software systems, using scientific analysis and mathematical models to ... of IBM z/OS-based mainframe experience using COBOL, CICS, JCL, TSO, ISPF, Endevor, and REXX.

A.C. Coy

Cobol/IDMS Developer (Remote)

Indianapolis, IN · On-site +1

$48 - $65/hr

... years of IBM z/OS-based mainframe experience using COBOL, JCL, TSO, ISPF, Endevor, and REXX ... CA IDMS system generation * CA IDMS security administration * Must have active CompTIA Security ...

A.C. Coy

Cobol/IDMS Developer (Remote)

Indianapolis, IN · Remote

$48 - $65/hr

... years of IBM z/OS-based mainframe experience using COBOL, JCL, TSO, ISPF, Endevor, and REXX ... CA IDMS system generation * CA IDMS security administration * Must have active CompTIA Security ...

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Mainframe Z Os System Programmer information

What is a mainframe z/os system programmer?

A Mainframe Z OS System Programmer is an IT professional responsible for installing, configuring, maintaining, and troubleshooting IBM mainframe systems running the z/OS operating system. They ensure the mainframe environment is stable, secure, and optimized for performance, supporting critical business applications. Their duties include system upgrades, applying patches, disaster recovery planning, and providing technical support to other IT teams. This role is crucial for organizations that rely on mainframe computing for large-scale transaction processing and data management.

What are the key skills and qualifications needed to thrive as a mainframe z/os system programmer?

To thrive as a Mainframe Z/OS System Programmer, you need deep expertise in IBM mainframe operating systems, programming languages like Assembler and REXX, and a strong foundation in systems administration, usually supported by a relevant degree or equivalent experience. Familiarity with tools such as IBM SMP/E, TSO/ISPF, JCL, and mainframe security systems is essential, and certifications like IBM Certified System Programmer can be beneficial. Analytical thinking, attention to detail, and effective problem-solving are key soft skills that help professionals excel in troubleshooting and collaborating with technical teams. These skills and qualifications are crucial for ensuring reliable, secure, and efficient mainframe operations that support critical business processes.

What are some common challenges faced by mainframe z/os system programmers, and how can they be addressed?

Mainframe Z/OS System Programmers often encounter challenges such as managing system upgrades, ensuring high availability, and troubleshooting complex performance issues. Keeping up with evolving technologies and integrating new software with legacy systems can also be demanding. To address these challenges, programmers typically work closely with application developers, attend ongoing training, and utilize robust monitoring tools. Collaboration and strong communication within cross-functional teams are key to maintaining system stability and implementing updates smoothly.

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Mainframe Z Os System Programmer jobs near you
Infographic showing various Mainframe Z Os System Programmer job openings in Indiana as of June 2026, with employment types broken down into 43% Full Time, and 57% Contract. Highlights an 66% In-person, and 34% Remote job distribution.

Sr. Software Engineer

SOSi

Indianapolis, IN • On-site, Remote

$117K - $154K/yr

Full-time

Re-posted 6 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 an experienced Senior Software Engineer to support a mission-critical federal payroll and financial management program. This role will support software development, application sustainment, and production operations within a complex enterprise environment.

Job Description

The Senior Software Engineer will support the full software development lifecycle, including software design, development, testing, implementation, maintenance, and production support. The successful candidate will possess strong legacy application experience supporting enterprise business systems.

Responsibilities

  • Design, develop, test, and maintain enterprise software applications.
  • Develop and maintain COBOL applications within an IBM z/OS environment.
  • Analyze and resolve production issues, including batch processing failures.
  • Support software releases, production deployments, and configuration management.
  • Participate in requirements analysis, code reviews, testing, and documentation.
  • Collaborate with systems engineers, database administrators, testers, and customer stakeholders.
Qualifications
  • Bachelor's degree in Computer Science, Engineering, Information Systems, or related field. Equivalent experience may be substituted.
  • 10+ years of software engineering experience.
  • Experience supporting mission-critical production environments.
  • Experience supporting enterprise business applications.
  • COBOL, IBM z/OS, JCL, SDLC, Production Support, Software Testing, Configuration Management
  • Ability to obtain Public Trust Clearance.

Preferred:

  • Oracle
  • Cognos
  • Endevor
  • Payroll, financial management, or ERP systems

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.