Overview

About the Role
We are looking for a Senior AI Engineer to join our AI Center of Excellence team at Epsilon, working at the heart of enterprise-grade Conversational, Agentic, and AI Platforms and applications. This role is for someone who brings a strong software engineering backbone, a data oriented perspective, and deep hands-on expertise in Generative AI, RAG, and Agentic AI systems and is ready to help shape the future of intelligent, enterprise systems at scale.
You will be building and scaling AI-powered applications and agents that serve thousands of associates and clients across Epsilon and Publicis Groupe, integrating with enterprise systems. You will own and operate across the full lifecycle - from ideation, experimentation and prototyping to production hardening, evaluation, and operational governance.

Click here to view how Epsilon transforms marketing with 1 View, 1 Vision and 1 Voice.

Responsibilities

Core Engineering & Architecture
- Design, develop, and ship production-grade AI applications - including conversational Assistants, RAG pipelines,



and multi-agent systems.
- Architect scalable, secure, and cost-effective backend services using Python, Node.js, and cloud-native patterns (AWS / Azure/ GCP).
- Build and maintain API services (RESTful, streaming) that integrate AI capabilities with enterprise systems.
- Write clean, testable, well-documented code with CI/CD standards; champion engineering rigor in an AI-first team.

Generative AI & LLM Systems
- Build and optimize LLM-powered features - including prompt engineering, structured output design, tool/function calling, and context management (multi-turn conversations, session handling).
- Design and implement evaluation frameworks (groundedness scoring, regression testing, quality benchmarking) for AI outputs - ensuring trust, accuracy, and continuous improvement.
- Stay hands-on with LLM APIs (Azure OpenAI, AWS Bedrock, Anthropic, open-source models) and make informed decisions on mod

📌 Senior Software Engineer (Bengaluru)
🏢 PUBLICIS GROUPE
📍 Bengaluru