Mainframe Programmer

Senior Macro Conversion Engineer

Fulltime Role

Remote

Role Summary

Serve as primary technical lead responsible for reverse engineering current macros and convert this to Rocket terminal emulator macros / IBM PCOMM-based automation solutions while preserving business functionality, performance, and output integrity.

Key Responsibilities

Macro Analysis and Conversion

• Analyze Rocket macro scripts and workflows.


• Reverse engineer business logic and process dependencies.


• Convert Rocket macros using:


• VBA


• VBScript


• PowerShell


• PCOMM HACL Automation


• EHLLAPI Automation


• COM Automation Solutions

Mainframe Automation Development

• Automate:


• Host navigation


• Screen recognition


• Protected/unprotected fields


• Function key processing


• File transfers


• Multi-session operations


• Batch processing

Reliability Engineering

• Replace hard-coded delays with:


• Screen-ready checks


• Cursor-position validation


• Host synchronization techniques


• Field readiness validation


• Implement:


• Logging


• Error handling


• Retry mechanisms


• Recovery workflows

Documentation

• Create design documentation.


• Generate macro mapping documents.


• Support operational runbook development.

Required Technical Skills

Mainframe & Terminal Emulation

• Deep understanding of:


• Host sessions


• Presentation spaces


• Screen attributes


• AID keys


• Keyboard mappings

PCOMM Automation

Strong experience in:

• IBM Personal Communications (PCOMM)


• EHLLAPI


• HACL


• COM Automation


• Session profile management


• File transfer configuration

Programming Languages

Advanced proficiency in:

• VBA


• VBScript

Preferred:

• PowerShell


• Python


• C#


• Java