Mainframe Application

Overview

Join to apply for the Mainframe Application & Testing Engineer role at Kyndryl.

Who We Are

At Kyndryl, we design, build, manage and modernize the mission-critical technology systems that the world depends on every day. So why work at Kyndryl? We are always moving forward – always pushing ourselves to go further in our efforts to build a more equitable, inclusive world for our employees, our customers and our communities.

The Role

Kyndryl is seeking a Mainframe Application & Testing Engineer with strong programming and database knowledge, robust testing methodology, and excellent debugging skills. This role is essential for ensuring reliable, high-quality application delivery in mission-critical enterprise systems.

You will be responsible for developing, maintaining, and testing mainframe applications, supporting end-to-end software delivery, and ensuring compliance with quality and governance standards.

Responsibilities

• 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.
  

Required Skills and Experience

• Mainframe Technical Skills
  
• 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).
  
• Testing Skills
  
• 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.
  
• Tools & Utilities
  
• 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).
  
• Quality & Process Knowledge
  
• 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).
  

Who You Are

You're good at what you do and possess the required experience to prove it. However, equally as important – you have a growth mindset; keen to drive your own personal and professional development. You are customer-focused – someone who prioritizes customer success in their work. And finally, you're open and borderless – naturally inclusive in how you work with others.

What You Can Expect

With state-of-the-art resources and Fortune 100 clients, every day is an opportunity to innovate, build new capabilities, new relationships, new processes, and new value. Kyndryl cares about your well-being and prides itself on offering benefits that give you choice, reflect the diversity of our employees and support you and your family through the moments that matter – wherever you are in your life journey. Our employee learning programs give you access to the best learning in the industry to receive certifications, including Microsoft, Google, Amazon, Skillsoft, and many more. Through our company-wide volunteering and giving platform, you can donate, start fundraisers, volunteer, and search over 2 million non-profit organizations. At Kyndryl, we invest heavily in you, we want you to succeed so that together, we will all succeed.

Seniority level

• Entry level
  

Employment type

• Full-time
  

Job function

• Engineering and Information Technology
  

Industries

• IT Services and IT Consulting
  

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