
Mainframe Application & Testing Engineer
- Hortolândia - SP
- Permanente
- Período integral
- Develop and support mainframe applications using COBOL, PL/I, Assembler, Easytrieve, and REXX/CLIST.
- Write and debug JCL for batch processing and job automation.
- Perform database operations and validations using DB2, IMS DB, and IDMS.
- Test online applications running on CICS and IMS DC.
- Conduct unit, integration, regression, and performance testing.
- Support UAT cycles and assist users with test execution and defect resolution.
- Use debugging tools (Abend-AID, Xpediter, IBM Debug Tool) and data utilities (SORT, IDCAMS, IEBGENER).
- Manage source code and packages using Panvalet, ChangeMan, Endevor, and Git.
- Document test cases, results, and root cause analyses.
- Collaborate with cross-functional teams to ensure smooth application delivery.
- z/OS environment: Strong knowledge of TSO/ISPF, SDSF, datasets (PS, PDS, VSAM).
- JCL (Job Control Language): Writing, modifying, and debugging jobs.
- Programming languages: COBOL (most common for business apps); PL/I, Assembler, RPG, Easytrieve (depending on the system) and REXX/CLIST (for automation).
- Databases: DB2, IMS DB, IDMS — querying, data validation, and test data setup.
- Transaction monitors: CICS, IMS DC — testing online applications.
- Understanding of SDLC (Software Development Life Cycle) and Agile/Waterfall models.
- Application analysis, enhancements, and defect fixing.
- Code review and integration with source management tools (Panvalet, ChangeMan, Endevor).
- Unit Testing: Verifying individual modules/programs.
- System Integration Testing (SIT): Validating interfaces and data flows across components.
- User Acceptance Testing (UAT) Support: Assisting users with test cycles.
- Regression Testing: Ensuring fixes/enhancements don’t break existing functionality.
- Performance Testing: Analyzing job run-times, CICS response times, DB performance.
- File & Data utilities: SORT, IDCAMS, IEBGENER, IEBCOPY for test data creation.
- Debugging tools: IBM Debug Tool, Abend-AID, Xpediter, File-AID.
- Test management tools: HP ALM/QC, Jira, or equivalent.
- Version control/SCM tools: Panvalet, ChangeMan, Endevor, Git (in hybrid environments).
- Defect Management & Root Cause Analysis.
- Familiarity with ITIL processes (Incident, Problem, Change Management).
- Compliance & audit standards (SOX, PCI, etc., depending on industry).
- Automation in testing: Using REXX, CLIST, or Python (in hybrid mainframe setups).