Mainframe Developer

COVENTEK, INC.

. Develop, enhance, and maintain COBOL and JCL programs processing interface files between ICAR and EDEN .

Posted 11/10/2026contractRemote • Iowa • United StatesMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates strong expertise in COBOL, JCL, and batch processing within mainframe environments, with a focus on application integration, data exchange, and legacy system modernization. Proficient in technical documentation, testing methodologies, and production support practices.

Highest-signal resume keywords

COBOL ProgrammingJCL DevelopmentIDMS Database ExperienceVSAM Dataset ManagementLegacy System Modernization

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Mainframe DevelopmentBatch ProcessingData MappingFile ProcessingTechnical DocumentationUnit TestingIntegration TestingRegression TestingUser Acceptance TestingProduction Support

Soft Skills

Strong Communication SkillsTeam CollaborationIndependent Work

Tools & Technologies

COBOLJCLIDMSVSAMAgile Methodologies

Industry Keywords

Child Support Enforcement SystemsHuman Services ProgramsEligibility SystemsPublic Assistance SystemsGovernment Modernization Initiatives

About the role

Key responsibilities & impact

Develop, enhance, and maintain COBOL and JCL programs processing interface files between ICAR and EDEN
Modify file layouts, data mappings, transformation logic, and validation routines
Enhance batch workflows, GDG structures, and VSAM datasets
Support replacement of legacy eligibility data sources with EDEN-derived data
Maintain and troubleshoot production processes and interfaces
Translate business and functional requirements into technical design specifications
Analyze mainframe applications and integration points for system-change impacts
Modify and support applications interacting with IDMS databases
Perform record-level and field-level analysis of interfaces
Identify dependencies, integration touchpoints, and risks during parallel legacy and modern-system operation
Create and maintain technical documentation, process flows, program specifications, and interface designs
Develop and execute unit, system, integration, regression, and user acceptance testing
Investigate and resolve testing defects
Validate end-to-end data processing and file exchanges
Create and maintain JCL, PROCs, scheduling definitions, and operational documentation
Support implementation, migration, production deployment, cutover planning, and execution
Troubleshoot production incidents, file-processing failures, and data discrepancies
Develop runbooks, monitoring procedures, and post-deployment support documentation
Collaborate with project managers, analysts, architects, developers, testers, and business stakeholders
Participate in design reviews, technical walkthroughs, sprint planning, and status meetings
Communicate technical risks, issues, dependencies, and recommendations
Support knowledge transfer and project documentation

Requirements

What you’ll need

Hands-on mainframe development experience
Strong expertise in COBOL, JCL, and batch processing
Experience working with IDMS or comparable mainframe database technologies
Experience with VSAM datasets and file-processing applications
Demonstrated experience supporting application integrations and data exchange processes
Experience analyzing and modifying legacy systems
Strong verbal and written communication skills
Ability to work independently and collaboratively in a team environment
ADS/O experience preferred
Experience supporting Child Support Enforcement systems or Human Services programs preferred
Experience with eligibility systems, public assistance systems, or government modernization initiatives preferred
Experience with large-scale legacy modernization projects preferred
Knowledge of production support, release management, and deployment practices preferred
Experience working in Agile or hybrid project environments preferred

Benefits

Comp & perks

6-month project duration
Remote work arrangement (local to Des Moines, Iowa)