TransUnion's Job Applicant Privacy Notice
Team Overview
We are looking for a ML / LLM Application Engineer to join our AI team and build production ready applications powered by large language models (LLMs). This is a hybrid position and involves regular performance of job responsibilities virtually as well as in-person at an assigned TU office location for a minimum of two days a week.
Role Overview And Core Responsibilities
This role is focused on LLM application development, agent orchestration, and system integration, rather than deep ML research or training models from scratch. You will own end to end delivery of LLM driven features—from design and prototyping to deployment, monitoring, and optimization—working closely with product, platform, and data teams.
Responsibilities
Design, build, and deploy LLM‑powered applications using LangChain, LangGraph, and related tooling.
Maintain modular, scalable agent workflows for multi‑step reasoning, planning, and tool execution.
Implement and own RAG pipelines, including data ingestion, chunking strategies, embedding workflows,



and contextual retrieval.
Develop effective prompting strategies, tool calling logic, memory handling, and guardrails to ensure reliable system behavior.
Integrate LLM applications with vector databases to enable semantic search and contextual intelligence.
Own production considerations such as latency, cost optimization, reliability, and observability.
Collaborate with product, platform, and data teams to translate business requirements into robust AI solutions.
Contribute to architectural decisions, engineering best practices, and reusable patterns for LLM‑based systems.

Required Knowledge And Experiences
Required Qualifications
2+ years of experience building production software, with a strong focus on AI‑powered or LLM‑based applications.
Solid proficiency in Python for building APIs, backend services, AI workflows and maintaining ML pipelines and services.
Solid understanding of machine le

📌 ML / LLM Application Engineer (2+ Years Experience) (Chennai)
🏢 TransUnion
📍 Chennai