Overview Project description
We have an ambitious goal to migrate a legacy system written in HLASM (High-Level Assembler) from the mainframe to a cloud-based Java environment for one of the largest banks in the USA.
Responsibilities We are looking for an experienced Senior Python Developer who can help perform the migration of the client platform:
Troubleshoot, debug, and resolve issues in GenAI-powered code translation pipelines
Collaborate with dev and client teams to ensure alignment with project goals and deliver high-quality solutions
Maintain and fine-tune RAG application that supports the migration process, specifically optimizing LLM prompts for pattern recognition
Build and maintain FastAPI-based microservices that orchestrate the migration workflow
Implement RAG (Retrieval Augmented Generation) systems using LangChain /Langgraph/LlamaIndex for contextual code understanding
Design stateful migration workflows using LangGraph/LangChain/LlamaIndex for complex multi-step transformations
Mandatory work from the office 5 days per week
Must have Experience in front-end development (preferably React) for building migration dashboards and progress monitoring interfaces (2+ years)
Proficiency in Python development (5+ years), with specific expertise in:
FastAPI for building high-performance REST APIs and WebSocket connections
Async programming patterns for handling concurrent migration tasks
Pydantic for robust data validation in migration pipelines
Experience with vector embeddings and embedding models
Vector database implementation for semantic search
Graph database experience for code dependency mapping
Building agents for code analysis, implementing custom tools for mainframe-specific transformations, creating chains for multi-step code migration
Orchestrating stateful workflows for complex migration scenarios, managing checkpoints for long-running migrations, implementing conditional routing based on code patterns
Building knowledge bases from documentation, implementing hybrid search for code pattern matching, creating custom retrievers for language specific contexts
Implementing similarity search and semantic code retrieval systemsGraph traversal algorithms for dependency analysis
Strong problem-solving and debugging skills for identifying translation anomalies and semantic preservation issues
Excellent communication skills for collaboration with client teams and explaining complex technical translations
Nice to have Deep understanding of HLASM instruction sets, macro definitions, and DSECT mappings
COBOL and PL/I for understanding integrated mainframe systems
Assembly language debugging and performance optimization
Mainframe utilities (DFSORT, IEBGENER, IDCAMS)
Experience with mainframe subsystems: CICS transactions, DB2 stored procedures, JCL batch processing
Knowledge of z/OS internals, linkage conventions, and program calling standards
Familiarity with EBCDIC to ASCII conversion, packed decimal (COMP-3) handling
Experience in Java development, particularly Spring Boot, to understand target architecture requirements
Familiarity with large-scale system migrations and modernization efforts, including phased migration strategies and dual-run validation
Prior experience working in the banking or financial services industry, understanding core banking concepts, regulatory requirements, and transaction processing
Knowledge of performance tuning and optimization in cloud environments, including auto-scaling strategies and cost optimization
#J-18808-Ljbffr