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Freelance Mainframe Applications Developer Jobs in Georgia

Mainframe Developer

Atlanta, GA

$47 - $60.50/hr

Experience implementing CI/CD pipelines for mainframe applications. * Expertise with IBM DBB, Jenkins, GitHub/GitLab/Bitbucket, and DevOps automation tools. * Experience with mainframe migration and ...

Mainframe Developer

Atlanta, GA · On-site

$47 - $60.50/hr

Experience in reengineering mainframe applications to Microservices will be huge plus. * Code in the support and implementation of US Liquidity systems and projects. * Responsible for ensuring code ...

Cobol Developer

Alpharetta, GA · On-site

$49 - $66.50/hr

Develop, code, test, and debug mainframe applications using COBOL, JCL, DB2, VSAM, and CICS. * Collaborate with cross-functional teams to gather and analyze system requirements. * Ensure application ...

Cobol Developer

Alpharetta, GA · On-site

$49 - $66.50/hr

... and engineering, with a unique combination of agility, scale, and maturity. We work with a wide ... Develop, code, test, and debug mainframe applications using COBOL, JCL, DB2, VSAM, and CICS.

COBOL Developer

Atlanta, GA · On-site

$48.25 - $65.50/hr

Seeking an experienced COBOL Mainframe Developer to maintain and enhance critical mainframe applications. This consultant will translate business requirements, support software operational efficiency ...

Sr. Lead Cobol Developer

Atlanta, GA · On-site

$48.25 - $65.50/hr

Role: Lead Cobol Developer Location: Irving, TX / Atlanta, GA - Fulltime Position Technical Leads ... Support system migration or modernization projects involving COBOL and other Mainframe applications ...

Mainframe Developer

Atlanta, GA · Hybrid

$47 - $60.50/hr

... mainframe health claims applications. * Develop, test, and deploy code changes for claims ... Engineering as a Service provides complete design, implementation, and technology operations ...

The Web Application Developer III is accountable for managing the Web Site/Ecommerce systems for ... Collaborate with the project team including but not limited to the mainframe, database and/or ...

MQ Mainframe Engineer

Alpharetta, GA · On-site

$47.75 - $61.50/hr

MQ Mainframe Engineer Alpharetta, GA - 3 days/week onsite 12+ month contract position Description ... all business applications and end users. * ETS provides capabilities for all stages of Morgan ...

Mainframe MQ Engineer

Alpharetta, GA · On-site

$47.75 - $61.50/hr

Mainframe MQ Engineer Alpharetta, GA, 30009 - 3 days onsite/2 days remote 12 months Contract Onsite ... number of applications) and must be able to support application developers in the use of MQ in ...

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$47 - $60.50/hr

Other

Posted 17 days ago


Job description


Mainframe Developer with DevOps Migration

Location: Atlanta, GA, Maryland, MD

Visa: OPT /STEM OPT/ H1B

Duration: Long-term contract

Video Interview

Required Skills

  • 6+ years Strong experience with COBOL, PL/I, JCL, REXX, and Assembler programming.
  • Hands-on experience in IBM z/OS mainframe environments.
  • Strong knowledge of DB2 for z/OS, CICS, IMS, and batch processing systems.
  • Experience implementing CI/CD pipelines for mainframe applications.
  • Expertise with IBM DBB, Jenkins, GitHub/GitLab/Bitbucket, and DevOps automation tools.
  • Experience with mainframe migration and modernization projects.
  • Prior experience in large enterprise modernization or migration programs.
  • Experience integrating mainframe DevOps with enterprise tools such as Jira, Confluence, and ServiceNow.
  • Strong understanding of SMP/E, IDCAMS, FTP/XMIT, and dataset management.
  • Experience troubleshooting production issues and performance tuning.
  • Excellent communication, documentation, and stakeholder management skills.

Job Description

We are seeking an experienced Mainframe Developer with strong expertise in DevOps Migration to support modernization initiatives for enterprise mainframe environments. The ideal candidate will have hands-on experience in legacy application development, z/OS support, CI/CD enablement, and migration planning/execution within large-scale enterprise environments.

KEY RESPONSIBILITIES

Mainframe Development & Support

  • Design, develop, and maintain mainframe applications using COBOL, PL/I, JCL, REXX, and Assembler.
  • Analyze existing legacy programs and batch jobs to assess modernization readiness and reusability.
  • Develop and optimize DB2 for z/OS queries, stored procedures, and data access logic.
  • Support CICS and IMS transaction processing applications throughout the development lifecycle.
  • Troubleshoot and resolve production incidents, abends, and performance issues in z/OS environments.

DevOps & CI/CD Enablement

  • Implement and manage CI/CD pipelines for mainframe application delivery using IBM Dependency Based Build (DBB), Jenkins, Tekton, or equivalent tooling.
  • Migrate mainframe source code to Git-based version control (GitHub, GitLab, Bitbucket) and establish branching and release strategies.
  • Develop automated unit and regression test frameworks for COBOL/PL/I programs using tools such as IBM Rational Test RealTime or IBM Z Open Testing.
  • Define and enforce DevOps standards, code review practices, and deployment governance for mainframe delivery teams.
  • Integrate mainframe build and deploy processes with enterprise DevOps platforms (Jira, Confluence, ServiceNow).

Migration Planning & Execution

  • Conduct discovery and impact analysis of z/OS workloads — JCL, batch jobs, datasets, and application interdependencies — to support migration planning.
  • Prepare detailed migration plans, task breakdowns, and effort estimates for management and stakeholder review.
  • Execute controlled migrations between environments (Dev, Test, Production) ensuring data integrity and minimal downtime.
  • Manage cross-LPAR dataset transfers, SMP/E activities, and library migrations using approved methods (FTP, XMIT, IDCAMS).
  • Document pre- and post-migration states, cutover procedures, and rollback plans.

Collaboration & Stakeholder Engagement

  • Work closely with infrastructure teams on LPAR configuration, storage, and system software upgrades (e.g., DB2 version upgrades, IBM software installs).
  • Coordinate with application owners, QA teams, and project managers to align delivery timelines and resolve technical dependencies.
  • Contribute to DevOps capability-building by coaching junior developers and conducting internal knowledge-transfer sessions.
  • Prepare technical documentation, runbooks, and status reports for internal and client audiences.