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