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Weekend Mainframe Jobs in Missouri (NOW HIRING)

Stellar IT Group

Mainframe Developer

Saint Louis, MO · On-site

$47.75 - $61.25/hr

Mainframe Developer (Senior - Security Remediation) Location: Remote Duration: 6-12+ Months Contract Role Overview We are seeking experienced Senior Mainframe Engineers with deep expertise in legacy ...

New

S2Tech

Mainframe Developer (Remote)

Chesterfield, MO · On-site +1

$48.50 - $62.25/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Mainframe Developer Location: Remote About Us : Known for "Delighting the Client" through performance, innovation, and an employee-centric culture, S2Tech is a fast-growing IT consulting company ...

Neshent Technologies

Mainframe Support Engineer

Wilbur Park, MO · On-site

$43.25 - $55.75/hr

We are seeking a Mainframe Support Engineer to provide L2/L3 production support for enterprise mainframe applications. The ideal candidate will have strong experience with COBOL, DB2, VSAM, Batch ...

New

Neshent Technologies

Mainframe Support Engineer

Glendale, MO · On-site

$46.75 - $60.25/hr

We are seeking a Mainframe Support Engineer to provide L2/L3 production support for enterprise mainframe applications. The ideal candidate will have strong experience with COBOL, DB2, VSAM, Batch ...

Neshent Technologies

Mainframe Support Engineer

Overland, MO · On-site

$45.75 - $58.75/hr

We are seeking a Mainframe Support Engineer to provide L2/L3 production support for enterprise mainframe applications. The ideal candidate will have strong experience with COBOL, DB2, VSAM, Batch ...

Neshent Technologies

Mainframe Support Engineer

Oakville, MO

$46.25 - $59.50/hr

We are seeking a Mainframe Support Engineer to provide L2/L3 production support for enterprise mainframe applications. The ideal candidate will have strong experience with COBOL, DB2, VSAM, Batch ...

New

Neshent Technologies

Mainframe Support Engineer

Ferguson, MO · On-site

$48 - $61.75/hr

We are seeking a Mainframe Support Engineer to provide L2/L3 production support for enterprise mainframe applications. The ideal candidate will have strong experience with COBOL, DB2, VSAM, Batch ...

Neshent Technologies

Mainframe Support Engineer

Florissant, MO · On-site

$45.25 - $58/hr

We are seeking a Mainframe Support Engineer to provide L2/L3 production support for enterprise mainframe applications. The ideal candidate will have strong experience with COBOL, DB2, VSAM, Batch ...

New

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All JobsMainframe JobsWeekend Mainframe JobsWeekend Mainframe Jobs in Missouri

Weekend Mainframe information

What is the difference between Weekend Mainframe vs Weekend Data Analyst?

AspectWeekend MainframeWeekend Data Analyst
Required CredentialsMainframe certifications, IT degreesData analysis certifications, degrees in statistics or IT
Work EnvironmentData centers, IT departments, server roomsOffice settings, data offices, client sites
Employer & Industry UsageFinancial institutions, government agencies, large corporationsMarketing firms, healthcare, retail companies
Common Search & ComparisonOften compared for technical skills and shift workCompared for data handling and analytical tasks

Weekend Mainframe professionals focus on maintaining and operating mainframe systems, often requiring specialized certifications and working in data centers. Weekend Data Analysts analyze data sets to support business decisions, typically working in office environments. While both roles may work on weekends, they differ in technical focus, environment, and industry applications.

What is a weekend mainframe?

Weekend Mainframe jobs involve managing, monitoring, and maintaining mainframe computer systems during weekend shifts. These roles ensure that large-scale computer operations, such as data processing, batch jobs, and system backups, run smoothly when regular staff may be off-duty. Employees in these positions typically troubleshoot issues, perform routine maintenance, and respond to system alerts to minimize downtime. Weekend Mainframe professionals are essential for organizations that require 24/7 uptime and reliability for their critical IT infrastructure.

What are the key skills and qualifications needed to thrive as a weekend mainframe operator, and why are they important?

To thrive as a Weekend Mainframe Operator, you need a solid understanding of mainframe systems, batch processing, and job scheduling, typically supported by experience with z/OS or similar platforms. Familiarity with tools like IBM JCL, TSO/ISPF, monitoring software, and sometimes certifications like IBM Certified System Programmer are commonly required. Strong problem-solving skills, attention to detail, and effective communication help operators respond quickly to system alerts and coordinate with technical teams. These skills ensure reliable system uptime and efficient issue resolution during critical off-peak hours.

What are some unique challenges of working as a weekend mainframe operator?

As a Weekend Mainframe Operator, you'll often work independently or with a smaller team compared to weekday shifts, which can mean taking on greater responsibility for monitoring and troubleshooting systems. Weekend shifts may require handling scheduled maintenance or updates and responding promptly to incidents, sometimes with limited immediate support from other departments. Strong problem-solving skills and the ability to follow detailed procedures are essential, as issues can arise outside of standard business hours. This role offers a valuable opportunity to develop autonomy and expertise in mainframe operations, which can lead to advancement into senior or weekday positions.

What are the most commonly searched types of Mainframe jobs in Missouri?

The most popular types of Mainframe jobs in Missouri are:

What are popular job titles related to Weekend Mainframe jobs in Missouri?

For Weekend Mainframe jobs in Missouri, the most frequently searched job titles are:

What job categories do people searching Weekend Mainframe jobs in Missouri look for?

The top searched job categories for Weekend Mainframe jobs in Missouri are:

What cities in Missouri are hiring for Weekend Mainframe jobs?

Cities in Missouri with the most Weekend Mainframe job openings:

Weekend Mainframe jobs near you
Infographic showing various Weekend Mainframe job openings in Missouri as of June 2026, with employment types broken down into 96% Full Time, 3% Part Time, and 1% Temporary. Highlights an 83% Physical, 4% Hybrid, and 13% Remote job distribution.

Mainframe Developer

Stellar IT Solutions LLC

Saint Louis, MO • Remote

$50 - $60/hr

Contractor

Posted 2 days ago

New

Job description

Position: Mainframe Developer (Senior - Security Remediation)

Location: Remote

Duration: 6-12+ Months Contract

Role Overview

We are seeking experienced Senior Mainframe Engineers with deep expertise in legacy banking systems to investigate, understand, and safely remediate security vulnerabilities in production‑critical applications. This role requires strong proficiency in COBOL, CICS, DB2, and z/OS, along with the ability to navigate complex, decades‑old financial systems where stability and accuracy are paramount. The ideal candidate will be a hands‑on engineer who can trace vulnerabilities to their root cause, implement secure fixes, and ensure safe deployment without disrupting mission‑critical banking operations.

Key Responsibilities

  • Investigate and analyze security vulnerabilities within legacy mainframe banking applications.

  • Trace issues to their technical root cause and design secure remediation strategies.

  • Modify and enhance COBOL, CICS, and DB2 codebases while ensuring production stability.

  • Collaborate with security, infrastructure, and application teams to validate fixes.

  • Conduct secure coding reviews and enforce mainframe security best practices.

  • Provide production support for remediation deployments, ensuring minimal disruption.

  • Document remediation steps, secure design patterns, and operational improvements.

  • Contribute to strengthening long‑term resilience of legacy banking systems.

Required Skills

  • Strong expertise in COBOL, JCL, CICS, DB2, z/OS.

  • Deep understanding of mainframe application architecture and legacy banking systems.

  • Hands‑on experience with secure coding practices in mainframe environments.

  • Proven ability to remediate vulnerabilities in production‑critical systems.

  • Strong problem‑solving skills and ability to work independently in high‑stakes environments.

Preferred Skills

  • Experience with large‑scale financial or banking applications.

  • Familiarity with mainframe modernization initiatives.

  • Exposure to secure SDLC practices and vulnerability management frameworks.

  • Strong communication skills to bridge security and engineering teams.