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Python Senior Developer

hace 3 semanas

Mar del Plata, Buenos Aires, Argentina DXC Technology A tiempo completo

Job Description
At DXC we use the power of technology to deliver mission critical IT services that our customers need to modernize operations and drive innovation across their entire IT estate. We provide services across the Enterprise Technology Stack for business process outsourcing, analytics and engineering, applications, security, cloud, IT outsourcing and modern workplace.

Our DXC IT Outsourcing services provides customers with reliable, optimized, and secure mission-critical systems at lower cost. We manage and simplify existing infrastructure investments and provide a way forward to modernize IT, including moving portions to the cloud.

About This Role
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 Senior Python Developer who can help perform the migration of the client platform.

What You Will Do

  • 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

Who You Are

  • 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
  • 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
  • English: B2 Upper Intermediate

Joining DXC connects you to brilliant people who embrace change and seize opportunities to advance their careers and amplify customer success. At DXC we support each other and work as a team — globally and locally. Our achievements demonstrate how we deliver excellence for our customers and colleagues. You will be joining a team that works to create a culture of learning, diversity and inclusion and are dedicated to strong ethics and corporate citizenship.

At DXC Technology, we believe strong connections and community are key to our success. Our work model prioritizes in-person collaboration while offering flexibility to support wellbeing, productivity, individual work styles, and life circumstances. We're committed to fostering an inclusive environment where everyone can thrive.

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