Senior Mainframe Developer

DivIHN Integration Inc

Illinois

On-site

USD 110,000 - 140,000

Full time

14 days+

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Job summary

A leading company in IT Services is seeking a Senior Platform Developer with extensive experience in mainframe technologies. This role focuses on enhancing, maintaining, and modernizing enterprise-level systems. The ideal candidate should have a strong background in COBOL, JCL, and system integration, and will collaborate with cross-functional teams to deliver high-quality solutions. If you are ready to take your skills to the next level in a dynamic environment, this opportunity is for you.

Qualifications

Minimum of 10 years in mainframe development.
Proficient in COBOL, IMS DB/DC, JCL scripting.
Experience with Agile methodologies and DevOps practices.

Responsibilities

Develop, enhance, and maintain mainframe applications using COBOL and IMS.
Support legacy applications modernization and integration.
Produce and maintain comprehensive technical documentation.

Skills

COBOL

IMS DB/DC

JCL

EZTrieve

Micro Focus toolsets

VSAM

Agile methodologies

DevOps practices

Education

Bachelor’s degree in computer science

Tools

Micro Focus Enterprise Developer

Version control tools

Job description

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Project Overview:

We are seeking a highly qualified Senior Platform Developer with deep expertise in Mainframe technologies to support the enhancement, maintenance, and modernization of enterprise-level systems. This role is critical in ensuring the stability, performance, and evolution of legacy applications that underpin essential business operations.

The ideal candidate will possess significant experience in COBOL programming, IMS DB/DC, JCL scripting, EZTrieve reporting, and Micro Focus toolsets, and demonstrate a strong understanding of mainframe-based architectures. This position involves close collaboration with multidisciplinary teams, including application architects, infrastructure specialists, and business stakeholders, to deliver high-quality solutions in complex, regulated environments.

Key Responsibilities:

Mainframe Application Development and Maintenance

Design, develop, enhance, and maintain mainframe applications utilizing COBOL, IMS DB/DC, and EZTrieve.
Write, manage, and troubleshoot JCL scripts for batch processing and production job execution.
Perform code analysis, debugging, and remediation to ensure operational stability and system integrity.

System Modernization and Integration

Support the re-platforming and re-hosting of legacy applications using Micro Focus Enterprise Developer and Server environments.
Assist in code migration, system integration, and testing for mainframe-to-open-system transformation initiatives.

Performance Engineering and Optimization

Conduct root cause analysis and performance tuning of legacy systems, jobs, and databases.
Optimize IMS databases and application throughput to meet SLAs and business performance benchmarks.

Technical Documentation and Governance

Produce and maintain comprehensive technical documentation, including system design specifications, program logic, batch workflows, and operational guides.
Ensure compliance with organizational standards, security protocols, and quality assurance frameworks.

Cross-Functional Collaboration and Leadership

Collaborate with QA analysts, business analysts, and project managers to define and deliver application functionality aligned with business needs.
Provide technical mentorship to junior developers and conduct peer reviews to ensure adherence to best practices.

Required Qualifications:

Minimum of 10 years of hands-on experience in mainframe application development and support.
COBOL (batch and online)
IMS DB/DC (hierarchical database and transaction control)
MFS (message format services
JCL (Job Control Language) – advanced batch scripting
EZTrieve – data extraction, ad-hoc reporting, and formatting
Demonstrated experience with VSAM, GDG, sequential datasets, and mainframe utility tools.
Familiarity with version control/change management tools (e.g., Endevor, Changeman, ISPW).
Experience with version control tools.
Experience with system performance benchmarking or load testing of mainframe jobs.
Proficiency in debugging tools such as Xpediter, File-AID, or equivalent.

Preferred Qualifications:

Exposure to CICS, DB2, or REXX scripting.
Experience in large-scale system migration, modernization, or re-hosting projects.
Understanding of middleware technologies (e.g., MQSeries) and API integration with distributed systems.
Knowledge of Agile methodologies, DevOps practices for legacy environments, and SDLC best practices.
Bachelor’s degree in computer science, Information Systems, Engineering, or a closely related discipline.
Industry certifications in mainframe development or Micro Focus technologies are highly desirable.

Seniority level