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
Mandatory Skills Description:
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 systems
Graph 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
Languages:
English: B2 Upper Intermediate