Meridial Marketplace, by Invisible · 2 days ago
COBOL Specialist - Freelance AI Trainer Project
United States
Contract
Remote
Senior Level
$6/hr - $65/hrMeridial Marketplace, by Invisible is seeking a COBOL expert to shape the future of AI. The role involves training AI on COBOL-related topics and ensuring the accuracy and reliability of language models in enterprise modernization.
Computer Software
Responsibilities
Converse with the model on real‑world mainframe scenarios and theoretical software‑engineering questions
Verify factual accuracy and logical soundness
Capture reproducible error traces (SQLCODEs, dump analysis, Abend‑AID/Fault Analyzer output)
Suggest improvements to our prompt engineering and evaluation metrics
Qualification
Required
COBOL expertise
IBM z/OS mainframe development
Batch and online processing
CICS transaction systems
JCL orchestration
DB2/IMS data access
VSAM file design
TSO/ISPF tooling
Micro Focus COBOL
Ability to challenge advanced language models on topics like copybook architecture and record layouts
EBCDIC/ASCII conversion
Program/performance tuning
Error triage for ABENDs (S0C7/S0C4)
Transaction integrity and commit/rollback
Parallel batch strategies and scheduling (CA7/Control‑M)
Message‑queue integration (IBM MQ)
API/REST/SOAP interop from COBOL
Code review/refactoring patterns
Documenting every failure mode
Conversing with the model on real‑world mainframe scenarios and theoretical software‑engineering questions
Verifying factual accuracy and logical soundness
Capturing reproducible error traces (SQLCODEs, dump analysis, Abend‑AID/Fault Analyzer output)
Suggesting improvements to prompt engineering and evaluation metrics
Clear, metacognitive communication—'showing your work'
Preferred
Bachelor's or master's in computer science, information systems, or a closely related field
Production COBOL/CICS/DB2 delivery
Legacy application modernization
Hands-on mainframe DevOps (Endevor/ChangeMan, RACF awareness, Git for z/OS, REXX scripting)
Benefits
Health insurance
PTO
Company
Meridial Marketplace, by Invisible
We are the AI training and scaling partner for the leading foundation model providers, enterprises, and governments, bridging the gap between AI potential and production.
Founded in 2015
5001-10000 employees
Funding
Current Stage
Late StageCompany data provided by crunchbase