Unisys · 17 hours ago
z/OS Migration Expert
United States
Full-time
Remote
Senior Level
7+ years expUnisys is seeking an experienced z/OS expert to support a major mainframe modernization initiative. The role involves migrating legacy z/OS mainframe applications and third-party system applications, requiring deep technical expertise in z/OS environments and hands-on experience with large-scale migrations.
Business DevelopmentInformation ServicesInformation TechnologyManagement Information SystemsSoftware
Responsibilities
Lead or support the migration of applications, batch jobs, and system utilities from legacy z/OS, including codebase analysis, JCL conversion, and workload scheduler integration
Participate in the creation and cloning of “Golden Image” LPARs for Dev, Test, and Prod environments on z/OS v3.1
Oversee or assist with the installation and configuration of IBM software suites (e.g., Auto Binary Optimizer, Migration Utility, Workload Scheduler, Enterprise COBOL, Security Server with RACF/zSecure)
Analyze and assist to remediate legacy code (Assembler, COBOL, FORTRAN, RPG, Easytrieve) for compatibility and performance on z/OS
Support the conversion of FORTRAN and RPG modules to COBOL v6.4
Collaborate with application teams to identify and retire redundant code and batch jobs
Assist with migration of security rules from Broadcom’s ACF2 and Top Secret to IBM RACF, including rule rewrites and RBAC alignment
Assist with migration of batch scheduling from PCS and Control-M to IBM Workload Scheduler (IWS)
Support the transition to a CI/CD pipeline using GIT and IBM-based tools, including the decommissioning of Panvalet and CONDOR
Assist with SMF data analysis to optimize performance and resource utilization on z/OS
Document migration processes, best practices, and lessons learned
Participate in post-migration hypercare, troubleshooting, and stabilization activities for each division’s cutover
Qualification
Required
7+ years of hands-on experience with IBM z/OS mainframe environments
Experience with z/VSE highly desirable
Strong proficiency in COBOL, JCL, Assembler, and experience with FORTRAN, RPG, and Easytrieve
Deep knowledge of IBM mainframe utilities, LPAR management, and SMPE
Experience with IBM RACF, ACF2, Top Secret, and security migrations
Familiarity with IBM Workload Scheduler, batch scheduling, and CI/CD pipelines
Excellent troubleshooting and analytical skills
Strong documentation and communication abilities, both written and verbal
Collaborative team player who works effectively with cross-functional teams and external partners
Ability to mentor and train others, sharing knowledge and best practices
Adaptable and flexible in a dynamic project environment
Strong organizational skills and attention to detail
Proactive problem-solver with a commitment to quality and continuous improvement
Must be eligible to work in the United States and pass background checks as required
Willingness to participate in onsite and remote work as project needs dictation
Commitment to knowledge transfer and mentoring of IT staff
MUST BE LOCATED IN TEXAS TO GET TO CLIENT SITE WHEN NEEDED
Preferred
Experience with DOCET/EV, Panvalet, CONDOR, and third-party mainframe tools
Prior involvement in large-scale mainframe modernization or consolidation projects
Exposure to regulatory compliance in insurance or financial services environments
Benefits
Unlimited paid time off
A 401(k) plan
Comprehensive healthcare
HSA matching
Ongoing learning opportunities
Company
Unisys
Unisys is a worldwide information technology company. They provide a portfolio of IT services, software, and technology that solves
10001+ employees
H1B Sponsorship
Unisys has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (30)
2024 (47)
2023 (24)
2022 (21)
2021 (21)
2020 (25)
Funding
Current Stage
Public CompanyTotal Funding
$1.19B2025-06-16Post Ipo Debt· $700M
2020-10-29Post Ipo Debt· $485M
2010-01-19Acquired
Leadership Team
Mike Thomson
CEO & President
Raj R Raman
CTO, Cloud
Recent News
2025-12-16
Company data provided by crunchbase