Lead Mainframe Modernization Engineer (COBOL/AI-assisted)

Machine Learning Technologies, LLC; Denver (CO); On-site; USD 140,000 - 190,000; Full time

Job summary

Machine Learning Technologies, LLC seeks a Lead Software Engineer to join the Safe Deposit Box Modernization team, supporting the Mainframe System of Record. You will drive modernization with approved AI tools for discovery, code and dependency analysis, and solution design.

You will apply rigorous human validation, security, and risk controls to AI outputs while interfacing with enterprise systems, architecture, and middleware.

Qualifications

• 5+ years in IBM z/OS mainframe applications development and support.
• 5+ years COBOL expertise with structured/modular programming and debugging.
• 3+ years with JCL, PROCs, job steps, utilities and batch scheduling.
• 3+ years in VSAM datasets and IDCAMS utilities.
• 3+ years with CICS and Db2/IMS, including transaction flows and data access.
• Experience integrating mainframe apps with MQ, Kafka, APIs or managed file transfers.
• Familiar with source-control, build, testing and deployment in mainframe environments.
• Agile delivery experience; familiarity with AI-assisted mainframe tooling.

Responsibilities

• Evaluate, plan, and support mainframe modernization using approved AI tools.
• Apply human validation, security, data protection, and risk controls to AI outputs.
• Design and develop technical solutions interfacing with enterprise systems.
• Resolve issues, test solutions, and prepare test data for end-to-end testing.
• Validate production results and assist team members in production support.
• Contribute across the full SDLC in an Agile environment.

Skills

Mainframe z/OS

COBOL

JCL

VSAM

CICS

Db2/IMS

MQ/Kafka/APIs

Testing/Debugging

Agile SDLC

AI-assisted tooling

Tools

IDCAMS

JCL Utilities

Mainframe Deployment Tools

Job description

Machine Learning Technologies, LLC seeks a Lead Software Engineer to join the Safe Deposit Box Modernization team, supporting the Mainframe System of Record. You will drive modernization with approved AI tools for discovery, code and dependency analysis, and solution design.

You will apply rigorous human validation, security, and risk controls to AI outputs while interfacing with enterprise systems, architecture, and middleware.