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Mainframe Systems Programmer Jobs in Missouri (NOW HIRING)

Walmart

(USA) Director, Software Engineering

Noel, MO · On-site

$130K - $260K/yr

Drives modernization from legacy INFOR mainframe systems to SAP and cloud-native architectures ... Strong software engineering leadership across scalable distributed systems and architecture.

TEKsystems

Programmer Analyst

Kansas City, MO · Remote

$30 - $35/hr

... and Jack Henry Sweeps systems. The primary focus will be new installations for financial ... mainframe environments and the ability to read COBOL code. · Programming/software engineering ...

Infojini Inc

DB2 Administrator

Saint Louis, MO · On-site

... Systems, Engineering, Business, or other related discipline. At least 7 years of overall database related work experience. DB2 Database experience Mainframe experience Database Definition Language ...

Atria Group LLC

Mainframe Tech Lead

O Fallon, MO · On-site

Our company provides application analysis, design, development and programming, software engineering, systems development, testing, integration, and implementation, and management consulting services ...

Wipro Limited

L2 Engagement Leader

Saint Louis, MO · On-site

$80K - $158K/yr

... Mainframe (CA7, Autosys, JCL, COBOL ecosystem) and Open Systems (Java, middleware, distributed ... DevOps practices, CI/CD pipelines, and shift-left methodologies. • Exposure to AI/ML-based ...

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Mainframe Systems Programmer information

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How much do mainframe systems programmer jobs pay per hour?

As of Aug 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 is a mainframe systems programmer?

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.
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Mainframe Systems Programmer jobs near you
Infographic showing various Mainframe Systems Programmer job openings in Missouri as of August 2026, with employment types broken down into 50% Full Time, and 50% Contract. Highlights an 100% In-person job distribution, with an average salary of $113,505 per year, or $54.6 per hour.

Senior Dynamics 365 & Power Platform Developer

Stellar IT Group

Saint Louis, MO • On-site

Contractor

Re-posted 9 days ago

Job description

Overview:
Title: Senior Dynamics 365 & Power Platform Developer
Location: Remote
Type: 12-Month Contract
Role Overview
We are seeking a highly skilled Senior Dynamics 365 & Power Platform Developer with extensive experience in the banking and financial services domain. The ideal candidate will have a proven track record of designing, customizing, and deploying business applications using Dynamics 365 Customer Engagement (CE), Dynamics CRM, and the Microsoft Power Platform. This role requires strong technical expertise, hands-on development skills, and the ability to deliver scalable solutions that meet complex business requirements.
Key Responsibilities
  • Design, build, and support custom Dataverse tables, Power Apps, forms, dashboards, and views.
  • Develop and maintain no-code/low-code solutions using Power Automate.
  • Customize Dynamics CRM tables and UI using no-code/low-code approaches.
  • Build and maintain custom integrations with mainframe systems using standard APIs.
  • Write clean, efficient, and maintainable code in RPG SQL, JavaScript, C#, .NET, and CRM Plugins.
  • Debug and resolve software defects, ensuring high-quality deliverables.
  • Utilize development tools such as Visual Studio, XrmToolBox, and Dynamics 365 CE WebAPI.
  • Collaborate with cross-functional teams to deliver solutions aligned with business and technical requirements.
Required Skills & Experience
  • 5+ years of hands-on experience with Dynamics 365 CE/Dynamics CRM and Power Platform solutions.
  • Strong expertise in Power Automate workflows and automation.
  • Proficiency in JavaScript, C#, .NET, CRM SDK, CRM Plugins, PowerApps, SQL databases.
  • Experience with development tools including Visual Studio, XrmToolBox, and Dynamics 365 CE WebAPI.
  • Hands-on experience in developing and deploying business applications using the Microsoft Power Platform.
  • Bachelor's degree in Computer Science, Electronics Engineering, or a related technical discipline.

Skills:
Power Platform,Dynamics 365

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