/ TEAMS · Specialist engineering · IBM mainframe
Distinguish z/OS, CICS, COBOL, JCL, Db2 for z/OS and RACF responsibilities. Modernizing an interface is a different job from owning batch recovery or production operations.
2,000+ engineers in our active talent network · Regional recruiters
/ SYSTEM STACK
z/OS operating environment
COBOL programs
CICS transactions
Db2 for z/OS
JCL batch operations
/ AVAILABLE TO HIRE
Profiles show the experience we can source. Individual candidate availability is confirmed after enquiry.
Senior IBM Mainframe Engineer
Available13+ years of experience · Czechia
IBM Mainframe Engineer with 13 years in production systems, focused on z/OS operating environment and COBOL programs.
Languages: Czech, English B2+
Senior IBM Mainframe Engineer
Available8+ years of experience · Serbia
IBM Mainframe Engineer with 8 years in production systems, focused on COBOL programs and CICS transactions.
Languages: Serbian, English B2+
Mid-level IBM Mainframe Engineer
Available3+ years of experience · Romania
IBM Mainframe Engineer with 3 years in production systems, focused on CICS transactions and Db2 for z/OS.
Languages: Romanian, English C1
Mid+ IBM Mainframe Engineer
Inquire availability7+ years of experience · Romania
IBM Mainframe Engineer with 7 years in production systems, focused on Db2 for z/OS and JCL batch operations.
Languages: Romanian, English B2+
/ Specialist sourcing
Distinguish z/OS, CICS, COBOL, JCL, Db2 for z/OS and RACF responsibilities. Modernizing an interface is a different job from owning batch recovery or production operations.
Evaluate real failure recovery, transaction throughput, change controls and safe deployment in an existing regulated environment.
Role-specific sourcing, not a promise of current candidate availability.
/ Engineering teams
Onectus uses its active engineering network and regional recruiting partners to search against concrete systems, environments and responsibilities. We evaluate practical experience rather than treating a framework mention or certification as proof of delivery. Particular availability and engagement terms are confirmed after an enquiry. For this role, practical knowledge of z/OS operating environment, COBOL programs, CICS transactions helps define the engineering search.
/ Technical specializations
The right profile depends on your actual architecture, performance constraints, integration boundaries and operational responsibilities.
IBM mainframe responsibilities include z/os operating environment, related cobol programs, clear test coverage and a reliable production handover. Examine the actual tooling and deployment environment.
IBM mainframe responsibilities include cobol programs, related cics transactions, clear test coverage and a reliable production handover. Examine the actual tooling and deployment environment.
IBM mainframe responsibilities include cics transactions, related db2 for z/os, clear test coverage and a reliable production handover. Examine the actual tooling and deployment environment.
IBM mainframe responsibilities include db2 for z/os, related jcl batch operations, clear test coverage and a reliable production handover. Examine the actual tooling and deployment environment.
IBM mainframe responsibilities include jcl batch operations, related racf access control, clear test coverage and a reliable production handover. Examine the actual tooling and deployment environment.
IBM mainframe responsibilities include racf access control, related z/os operating environment, clear test coverage and a reliable production handover. Examine the actual tooling and deployment environment.
/ Project scenarios
Preserve core transaction processing. Define constraints around z/os operating environment, map dependencies and test how the proposed implementation behaves under real operating conditions.
Modernize COBOL integration points. Define constraints around cobol programs, map dependencies and test how the proposed implementation behaves under real operating conditions.
Stabilize overnight JCL jobs. Define constraints around cics transactions, map dependencies and test how the proposed implementation behaves under real operating conditions.
Plan safe mainframe system changes. Define constraints around db2 for z/os, map dependencies and test how the proposed implementation behaves under real operating conditions.
/ Practical evaluation
A senior engineering interview should surface directly relevant implementation details, debugging history and operational judgment.
Describe a production issue involving z/OS operating environment and what evidence led to a fix.
Which decisions around COBOL programs and CICS transactions were you personally accountable for?
Describe a production issue involving CICS transactions and what evidence led to a fix.
Which decisions around Db2 for z/OS and JCL batch operations were you personally accountable for?
/ Sourcing process
Define platform versions, deployment constraints, traffic patterns, required integrations and ownership.
Search the active network and partner channels for platform-specific engineering experience.
Discuss real systems, code or configuration decisions, troubleshooting and change control.
Confirm role boundaries, location or remote access, availability, security and interviews.
Profiles, availability and engagement terms are confirmed for each request.
/ Questions
Yes. Tell us the relevant versions, operational environment and the responsibilities connected to z/OS operating environment. We qualify hands-on experience during each search.
These can be included when central to the project. We distinguish practical implementation work from general familiarity and ask about failure scenarios and testing.
We look at production decisions, trade-offs, incident diagnosis, code or infrastructure ownership and the ability to explain decisions without relying on a technology checklist.
Share your architecture, technical constraints, collaboration model and priorities. We can then discuss relevant sourcing channels, evaluation criteria and next steps.
/ Onectus · TEAMS
Tell us the technology, production responsibilities, experience level and working model. We'll activate the appropriate engineering sourcing channels.
