Senior Full-stack

5 days ago

Bangalore, India Luxoft Full time

Project: 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. We are looking for an experienced Python Full-Stack Developer (Python+React) who can help perform the migration of the client platform: • 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 • Design stateful migration workflows using LangGraph/LangChain/LlamaIndex for complex multi-step transformations • Mandatory work from the office 5 days per week 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 • Building knowledge bases from documentation, implementing hybrid search for code pattern matching, creating custom retrievers for language specific contexts • Graph traversal algorithms for dependency analysis • COBOL and PL/I for understanding integrated mainframe systems • Assembly language debugging and performance optimization • Mainframe utilities (DFSORT, IEBGENER, IDCAMS) • Experience with mainframe subsystems: Knowledge of z/OS internals, linkage conventions, and program calling standards • Experience in Java development, particularly Spring Boot, to understand target architecture requirements • 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

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