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Mainframe Developer (Unisys OS2200)

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Location: Remote
Compensation: Salary
Reviewed: Mon, Nov 09, 2026
This job expires in: 30 days

Job Summary

Seeking a skilled Mainframe Developer (Unisys OS2200) for a full-time remote position focused on maintaining, enhancing, and modernizing critical enterprise applications while collaborating with cross-functional teams to ensure integration with Workday HCM and related services.

Key Responsibilities
  • Analyze, maintain, and enhance mission-critical applications on the Unisys OS2200 platform
  • Develop and optimize applications using COBOL ANSI 74 and design ECL job streams for batch processing
  • Collaborate with business analysts and technical teams to support application modernization and production deployments
Required Qualifications
  • Bachelor's degree in Computer Science, Information Systems, Engineering, or a related field
  • 5+ years of experience in developing and supporting enterprise applications in a mainframe environment
  • Proficiency in Unisys OS2200, COBOL ANSI 74, ECL, SSG, and DMS
  • Strong experience in application testing, defect analysis, and quality assurance
  • Ability to create comprehensive technical documentation and operational support guides

Complete Job Description

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