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Mainframe Systems Programmer Jobs in Missouri (NOW HIRING)

S2Tech

Mainframe Developer (Remote)

Chesterfield, MO · On-site +1

$48.50 - $62.25/hr

Work with mainframe systems and associated technologies to ensure optimal performance and ... other developers, to ensure seamless integration of COBOL applications within the broader IT ...

S2Tech

Mainframe Developer (Remote)

Chesterfield, MO · Remote

$48.50 - $62.25/hr

Work with mainframe systems and associated technologies to ensure optimal performance and ... other developers, to ensure seamless integration of COBOL applications within the broader IT ...

TriOptus LLC

Mainframe CICS Programmer

Belton, MO · On-site

$43.50 - $55.75/hr

Mainframe CICS Engineer The Mainframe CICS Systems Programmer/Engineer is responsible for all phases of CICS engineering, system and software maintenance, and CICS related operational functions.

Futran Tech Solutions Pvt. Ltd.

SRE

Saint Louis, MO · On-site

$55.50 - $73.50/hr

Role : SRE (Mainframe + Java + Oracle + Account Management Services) Location : St Louis, MO ( 3 ... Support mainframe batch processes and real-time transactional systems. * Analyze mainframe job ...

Purple Drive Technologies

COBOL Developer

Urbana, MO · On-site

$48.50 - $65.50/hr

Role OverviewWe are seeking a seasoned COBOL Developer to join our team supporting legacy mainframe systems. Youll be responsible for maintaining, enhancing, and modernizing COBOL-based applications ...

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Mainframe Systems Programmer information

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How much do mainframe systems programmer jobs pay per hour?

As of Jun 10, 2026, the average hourly pay for mainframe systems programmer in Missouri is $54.57, according to ZipRecruiter salary data. Most workers in this role earn between $49.62 and $63.12 per hour, depending on experience, location, and employer.

What Does a Mainframe Systems Programmer Do?

As a mainframe systems programmer, your responsibilities are to maintain an organization’s server computer, also called a mainframe computer. Your duties include handling server configuration, as well as installing, upgrading, and customizing the operating system and other software necessary for running the server and its databases. You also work with other IT professionals with the planning of security measures to protect the mainframe and routinely perform tests for bugs and other security issues.

What are some common challenges Mainframe Systems Programmers face when maintaining legacy systems?

Mainframe Systems Programmers often encounter challenges related to supporting and upgrading legacy systems that may have limited documentation or use outdated programming languages. Navigating compatibility issues with newer hardware or software can require creative problem-solving and deep technical expertise. Additionally, ensuring system security and reliability while performing upgrades or patches involves careful planning and collaboration with other IT and business teams. Staying current with evolving mainframe technologies and practices is essential for long-term success in the role.

What is the difference between Mainframe Systems Programmer vs Mainframe Application Developer?

AspectMainframe Systems ProgrammerMainframe Application Developer
CredentialsTypically requires certifications like IBM Certified Systems ProgrammerOften requires programming certifications or specific language expertise
Work EnvironmentWorks primarily on system-level tasks, OS, and hardware interactionsFocuses on developing and maintaining applications on mainframe platforms
Employer & Industry UsageCommon in large enterprises with mainframe infrastructureAlso in large organizations, but more application-focused
Job FocusSystem configuration, performance tuning, and maintenanceApplication coding, testing, and deployment

The Mainframe Systems Programmer primarily manages system-level tasks, ensuring the mainframe environment runs efficiently, while the Mainframe Application Developer focuses on creating and maintaining applications. Both roles are essential in mainframe environments but differ in their technical focus and responsibilities.

What are Mainframe Systems Programmers?

Mainframe Systems Programmers are IT professionals responsible for installing, configuring, maintaining, and troubleshooting mainframe computer systems and software. They ensure that the mainframe environment runs efficiently, securely, and reliably, supporting critical business operations. Their duties often include system upgrades, performance tuning, applying patches, and collaborating with other IT teams to resolve complex technical issues. Mainframe Systems Programmers play a key role in organizations that rely on large-scale transaction processing, such as banks, insurance companies, and government agencies.

What are the key skills and qualifications needed to thrive as a Mainframe Systems Programmer, and why are they important?

To thrive as a Mainframe Systems Programmer, you need expertise in system programming, operating systems like z/OS, and strong problem-solving abilities, usually supported by a degree in computer science or related field. Familiarity with mainframe tools such as IBM z/OS utilities, JCL, REXX, and experience with system monitoring and performance tuning software are commonly required. Attention to detail, analytical thinking, and effective communication skills help ensure smooth collaboration and troubleshooting. These skills are essential to maintain, optimize, and secure critical enterprise computing environments that rely on mainframe infrastructure.
More about Mainframe Systems Programmer jobs
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Mainframe Systems Programmer jobs near you
Infographic showing various Mainframe Systems Programmer job openings in Missouri as of June 2026, with employment types broken down into 84% Full Time, and 16% Contract. Highlights an 89% In-person, and 11% Remote job distribution, with an average salary of $113,505 per year, or $54.6 per hour.
Mainframe Systems Engineer (zOS Mainframe Internals, Parallel Sysplex, Hardware & Storage) Remote

Mainframe Systems Engineer (zOS Mainframe Internals, Parallel Sysplex, Hardware & Storage) Remote

Norfolk Southern Corp.

Kansas City, MO

$50.75 - $64.75/hr

Other

Posted 29 days ago

Job description

Requisition 39683: B4 Mainframe Systems Engineer 

A resume helps you stand out to hiring managers and recruiters; your resume communicates your experience and your brand. While it is not required, we encourage you to include an up-to-date resume along with a  completed job application to give you the best opportunity to be considered. A complete resume helps us to better understand your unique  background, relevant experiences, and passions. We look forward to learning about you.

Norfolk Southern offers a unique opportunity to be part of our proud legacy that spans nearly 200 years. We are a customer-centric, operations-driven team dedicated to advancing safety, serving communities, and driving innovation for tomorrow's rail.  As part of Norfolk Southern, you'll join a collaborative team where there are opportunities for growth across the organization. We are building a culture where everyone can thrive by owning and driving exceptional results, being humble and leading with trust, serving our customers with excellence, and collaborating and coaching to win.

Job Description

Norfolk Southern is seeking a highly motivated, self-starting Mainframe Systems Engineer to oversee and administer the company's enterprise mainframe environment.  In this role, you will support a Parallel Sysplex infrastructure and play a critical role in ensuring system reliability, performance, and availability.

Key responsibilities include DASD and tape storage management, system performance monitoring and tuning, and proactive problem resolution.  The Mainframe Systems Engineer will also collaborate with internal stakeholders and third-party hardware providers to design and implement solutions that support a highly available, scalable, resilient mainframe environment. 

Responsibilities

   Drive z/OS technology development initiatives, including evaluation, deployment, and integration of new product enhancements and hardware solutions.
   Own the installation, maintenance, and operational support of mainframe infrastructure and system software across a Parallel Sysplex environment.
   Monitor and manage mainframe performance.
   Use, configure and provide support of storage subsystems and infrastructure. 
   Coordinate with hardware and software vendors for support and future project work.
   Create comprehensive documentation, conduct thorough testing, and follow defined change control processes.
   Provide support for mission critical application infrastructure and products.
   Communicate with end-users, application programmers, co-workers, managers, and other stakeholders.
   Writing test scripts and performing testing verification of product deliverables.
   Serve as part of a rotational Level 2 on-call support team, responding to and resolving complex system issues.

Education

Bachelor's degree in technology, MIS, CIS or other related degrees preferred. Will consider experience in lieu of college degree. 
 

Job Related Experience
   Minimum Level: 4 years
   Preferred Level: 5+ years
 

Skills Required 
   4+ years of experience with mainframe z/OS internals, z/OS Parallel Sysplex, Unix Systems Services (USS).
   4+ years of experience with mainframe hardware, software and third-party installation support. 
   4+ years of experience designing, administering, and supporting mainframe disk (DASD) and tape storage infrastructure.
   Experience mainframe capacity planning and performance tuning. 
   Experience writing test scripts and performing testing verifications. 
   Experience with mainframe application development IDE build and run tools. 
 

Skills Desired 
   Expertlevel understanding of z/OS internals, UNIX System Services (USS), and  Parallel Sysplex architecture, including crosssystem communication and workload management. 
   Experience with Assembler, TCPIP/VTAM, TSO/ISPF, REXX, SMP/E
   Maintain and operate within a Parallel Sysplex environment including virtual tape and sharing of DASD.
   Knowledge of Infrastructure software solutions, (ex. Zeke, Zebb, ISPW, TMON, JCLPrep, QuickRef, SAS, CICS, IBM utilities)
   Maintain a Coupling Facility environment.
 

Work Conditions
Location: Position eligible for remote work within Norfolk Southern's 22-state operating network.
Environment: US Remote
Shift Work: No
On-Call: Yes
Weekend Work: No

Company Overview

Since 1827, Norfolk Southern Corporation (NYSE: NSC) and its predecessor companies have safely moved the goods and materials that drive the U.S. economy. Today, it operates a customer-centric and operations-driven freight transportation network. Committed to furthering sustainability, Norfolk Southern helps its customers avoid 15 million tons of yearly carbon emissions by shipping via rail. Its dedicated team members deliver more than 7 million carloads annually, from agriculture to consumer goods, and is the largest rail shipper of auto products and metals in North America. Norfolk Southern also has the most extensive intermodal network in the eastern U.S., serving a majority of the country's population and manufacturing base, with connections to every major container port on the Atlantic coast as well as the Gulf of Mexico and Great Lakes. Learn more by visiting www.NorfolkSouthern.com.

At Norfolk Southern, we believe in celebrating our individuality. By leveraging the unique backgrounds and viewpoints of our employees, we can create a culture of innovation, respect, and inclusion. We know that employees thrive in a workplace where differing viewpoints, ideas, and experiences are freely shared and valued. As such, we encourage all employees to contribute their distinctive skills and capabilities to our organization.

Equal employment opportunities are available to all applicants regardless of race, color, religion, age, sex, national origin, disability status, genetic information, veteran status, sexual orientation, and gender identity. Together, we power progress.

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