Senior Mainframe Developer

AGCO Corporation

. Analyze and document existing Unisys-based COBOL applications, batch processes, databases, interfaces, and data flows .

Posted 10/13/2026full-timeTacoma • Washington • United StatesSenior💰 $115,000 - $145,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates extensive expertise in COBOL development and integration of legacy systems with modern cloud-based platforms, particularly Workday. Proficient in analyzing and enhancing existing applications while ensuring compliance with security and regulatory standards.

Highest-signal resume keywords

COBOL DevelopmentUnisys Mainframe ExperienceWorkday IntegrationData Mapping and TransformationBatch Processing Systems

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

COBOL-74COBOL-85Enterprise COBOLDMSII DatabasesSQLREST APIsSOAP Web ServicesETL ProcessesJCLMiddleware Platforms

Soft Skills

MentoringCommunication with Stakeholders

Tools & Technologies

Workday HCMWorkday PayrollWorkday FinancialsWorkday StudioEnterprise Interface Builder (EIB)

Industry Keywords

Technical DebtDigital TransformationBusiness ContinuityData QualitySystem Integration

Tech Stack

Tools & technologies

CloudETLSOAPSQL

About the role

Key responsibilities & impact

Analyze and document existing Unisys-based COBOL applications, batch processes, databases, interfaces, and data flows
Review 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
Design and implement integration solutions between legacy Unisys applications and Workday
Create outbound interfaces for legacy data to Workday
Develop inbound processes to consume Workday-generated data
Support Workday APIs, web services, EIBs, and middleware-based integrations
Design data transformation and validation processes
Analyze master and transactional data structures
Map legacy data elements to Workday objects
Identify data quality issues and develop remediation plans
Support migration and reconciliation activities
Develop automated data extraction and transformation processes
Provide modernization recommendations and technical roadmaps
Identify opportunities to reduce technical debt and improve maintainability
Implement application lifecycle management best practices
Document system architecture, interfaces, and operational procedures
Develop and execute unit, system, integration, and regression testing strategies
Support end-to-end testing with Workday and external systems
Ensure modifications comply with security, audit, and regulatory requirements
Support production deployments
Troubleshoot integration failures and batch processing issues
Participate in on-call support during critical implementation periods
Monitor system performance and recommend improvements

Requirements

What you’ll need

Bachelor's degree in Computer Science, Information Systems, Engineering, or a related field; equivalent combination of education and relevant experience may be considered
10+ years of COBOL development experience
7+ years supporting enterprise mainframe environments
5+ years working with Unisys mainframe platforms
Experience maintaining highly customized legacy applications over multiple decades
Experience supporting large-scale modernization or digital transformation initiatives
Experience integrating legacy systems with cloud-based SaaS platforms
Experience with COBOL-74, COBOL-85, or Enterprise COBOL
Experience with DMSII databases
Experience with batch processing systems and JCL or equivalent job scheduling frameworks
Experience with REST APIs, SOAP web services, ETL processes, data mapping and transformation, middleware platforms, message queues, and secure file transfer solutions
Experience with relational databases and SQL
Experience with one or more of Workday HCM, Workday Payroll, Workday Financials, Workday Studio, Workday Web Services (WWS), Enterprise Interface Builder (EIB), or Workday integration frameworks
Experience mentoring junior and mid-level developers
Understanding of payroll, HR, finance, and workforce management business processes
Experience communicating with executives, architects, business stakeholders, and technical teams
Eligible to work in the United States

Benefits

Comp & perks

Medical insurance
Dental insurance
Vision insurance
PTO
401K matching
Education reimbursement
Community and philanthropic events
Flexible career paths