Senior Technical Lead
India
Job Description
Senior Technical Lead
Chennai, Tamil Nadu

Job Summary

To designs, build, and deploy production-grade enterprise applications powered by large language models, retrieval-augmented generation (RAG) pipelines, and autonomous AI agents.

Key Responsibilities

Gen AI Architecture: Design and implement RAG systems, multi-agent workflows, and orchestration frameworks.
LLM Integration: Integrate foundation models (GPT, LLaMA, Claude) with enterprise data lakes, microservices, and external APIs.
Optimization & MLOps: Fine-tune models, monitor inference latency, manage vector databases, and control production costs.
Collaboration & Mentorship: Work with cross-functional product and data science teams while guiding junior developers

Skill Requirements

10-12+ years of Technical Experience in RPA, GenAI and allied skills.

Programming: Advanced proficiency in Python and backend web frameworks (FastAPI, Flask).
AI Frameworks: Deep hands-on experience with LangChain, LlamaIndex, and vector databases (Pinecone, Chroma, FAISS).
Cloud & Infrastructure: Containerization experience using Docker, Kubernetes, and major cloud platforms (AWS, Azure, or GCP).

Other Requirements

Core Programming & ArchitectureAdvanced Python: Mastery of Python and backend frameworks like FastAPI or Flask to build robust AI services.
Distributed Computing: Experience with PySpark or similar tools for large-scale data processing pipelines.
System Design: Ability to design microservices, event-driven architectures, and decoupled, scalable components

Gen AI & LLM ExpertiseModel Orchestration: Working with major foundation models (GPT, Claude, Gemini, LLaMA) via native SDKs and APIs.
RAG Systems: Designing Retrieval-Augmented Generation pipelines, context engineering, and vector databases (Pinecone, Weaviate, Chroma).
Agentic Workflows: Building autonomous multi-agent systems and tool-calling architectures using frameworks like LangChain, LangGraph, LlamaIndex, or CrewAI.
Fine-Tuning & Evaluation: Implementing PEFT, LoRA, and QLoRA, alongside evaluation frameworks like Ragas or DeepEval to measure hallucination and model quality.

MLOps & Cloud InfrastructureCloud Platforms: Hands-on deployment using hyperscalers like AWS (Bedrock), Microsoft Azure (Azure OpenAI), or Google Cloud (Vertex AI).
Containerization & CI/CD: Packaging applications with Docker and Kubernetes, and managing automated deployment pipelines.
Observability: Tracking latency, token costs, LLM tracing, and output performance in production environments. 

Information at a Glance

Why HCLTech?

At HCLTech, you'll supercharge your potential. You'll find your career. And you'll find your spark. All at a place that knows that helping its customers stay on top starts by putting its people first.

HCLTech is a global technology company, home to more than 230,000 people across 60 countries, delivering industry-leading capabilities centered around digital, engineering, cloud and AI, powered by a broad portfolio of technology services and products. We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services. Consolidated revenues as of 12 months ending September 2026 totaled $14.8 billion.