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Lead Python Developer

Lead Python Developer

Luxoft

5 - 9 years

14 - 19 Lacs

bengaluru

Posted:4 days ago| Platform:

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Skills Required

dbms java zos python development cics algorithms data validation dashboards microservices sql react.js jcl websocket dfsort debugging vsam pattern recognition rest mainframes python performance tuning javascript os internals spring boot cobol

Work Mode

Work from Office

Job Type

Full Time

Job Description

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

Skills
Must have

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 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 subsystemsCICS 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 front-end development (preferably React) for building migration dashboards and progress monitoring interfaces

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

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Lead Python Developer