Appex Innovation is hiring: Mainframe Batch Tester in California

We have aremote opportunity as a Mainframe Batch Tester based in the USA.

Location:100% Remote [USA]

Type:Contract

Experience:5+ Years in Mainframe Testing; Financial Domain Expertise Required

Domain Focus:ACS, Collections, Loan Servicing, or Payments

Role Summary

We are seeking a highly experienced and technically proficientMainframe Batch Testerto ensure the quality and accuracy of mission-critical financial systems. The ideal candidate will have extensive hands-on experience in testinghigh-volume batch processesand possess deep functional knowledge of systems related toACS (Automated Collections System), loan servicing, or payments. This is a 100% remote contract position.

Key Responsibilities

Batch Execution & Validation

Test Case Design:Design, document, and execute comprehensive test plans and detailed test cases for complex mainframe batch cycles and integrated online processes.

Data Validation:Perform rigorousdata reconciliation and backend testingusingDB2/SQL, File-Aid, or similar tools to ensure data integrity across various files (VSAM, sequential) and databases.

Batch Cycle Management:Execute and validate end-to-end batch flows, including job dependencies, scheduling (CA-7/Control-M), exception handling, and restart/recovery logic.

JCL & Logs:AnalyzeJCL (Job Control Language)execution results, job logs, andabend codesto isolate and troubleshoot defects within the batch environment.

Domain & Technical Expertise

Domain Testing:Apply deep functional knowledge to test key business processes withinACS, collections, loan servicing, or paymentssystems (e.g., payment posting, interest accrual, statement generation, late fee processing).

Test Data Management:Create, manipulate, and manage complex test data using tools likeFile-Aidor customscripting(e.g., REXX, Python, or shell scripting) to cover positive, negative, and edge-case scenarios.

Scripting for Automation:Utilizescripting mustfor test data creation, validation automation, environment setup, or repetitive file comparison tasks.

Collaboration & Quality Assurance

Defect Management:Identify, document, prioritize, and track defects using tools like JIRA or HP ALM, collaborating closely with developers and business analysts for root cause analysis and resolution.

Documentation:Create and maintain test deliverables, including Test Plans, Requirements Traceability Matrices (RTM), and detailed test execution reports.

SDLC/Agile:Actively participate in all phases of the Agile SDLC, including sprint planning, daily stand-ups, and release support (UAT, cutover validation).

Required Qualifications

5+ yearsof dedicated experience inMainframe Quality Assurance or Functional Testing.

Proven expertise in testing financial services applications, specifically incollections (ACS), loan servicing, or payments/banking domains.

Strong technical proficiency in mainframe utilities:JCL, DB2/SQL, VSAM, TSO/ISPF, and File-Aid.

Mandatory hands-on scripting experience(REXX, Python, or Shell) for test automation/data utility.

Excellent analytical, debugging, and problem-solving skills.

Strong verbal and written communication skills suitable for a remote, contract environment.