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Posted 5d ago•Tacoma, Washington, United States
Senior Mainframe Developer
SeniorOn-site (Tacoma)Salary undisclosed
Required Skills
SQL
Job Description
About This Opportunity
We are seeking an experienced Senior Mainframe Developer to lead the remediation and modernization of a 50-year-old legacy COBOL system running on a Unisys mainframe platform. This role will be responsible for analyzing, modifying, and enhancing critical business applications to support integration with Workday Human Capital Management (HCM), Payroll, Finance, and related enterprise services.
This individual will work closely with enterprise architects, Workday integration developers, business analysts, infrastructure teams, and business stakeholders to enable reliable and secure data exchange between legacy applications and the Workday platform.
Key Responsibilities:
- Legacy System Assessment & Remediation
- Analyze and document existing Unisys-based COBOL applications, batch processes, databases, interfaces, and data flows.
- Review and assess approximately 50 years of application code for technical debt, dependencies, and remediation requirements.
- Identify and resolve code defects, performance bottlenecks, and system integration constraints.
- Refactor, modify, and enhance COBOL programs to support modern integration patterns.
- Maintain business continuity while implementing system changes.
- Workday Integration Enablement
- Design and impl
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