Senior Technical Lead
India
Job Description
Senior Technical Lead
Bengaluru, Karnataka

Job Summary

"Role Overview: 
Design, implement, and optimize Retrieval-Augmented Generation (RAG) systems for enterprise AI applications. Enable LLMs to access and utilize internal knowledge bases, ensuring accurate, context-rich, and verifiable outputs. 

Key Responsibilities

Key Responsibilities: 

Architect and build RAG pipelines integrating LLMs with enterprise data sources (documents, databases, APIs). 

Develop and maintain retrieval components (vector databases, embedding models, search algorithms). 

Implement data ingestion, indexing, and segmentation for large-scale, multi-modal content (PDFs, DOCX, PPTX, images, etc.). 

Ensure robust security, compliance, and access controls for sensitive enterprise data. 

Optimize RAG system performance, reliability, and scalability for production use. 

Collaborate with data engineers, ML engineers, and business stakeholders to deliver end-to-end RAG solutions. 

Evaluate and improve RAG system accuracy, relevance, and user experience. 

Document processes, architectures, and best practices for knowledge sharing. 

Skill Requirements

Required Skills: 

5+ years in data engineering, ML engineering, or AI application development. 

Strong proficiency in Python, SQL, and data processing frameworks. 

Hands-on experience with vector databases (Pinecone, Weaviate, FAISS, OpenSearch), graph databases (Neo4j, CosmosDB), and RAG system implementation.  

Familiarity with LLMs (GPT-4, Claude, Gemini, Llama), prompt engineering, and information retrieval. 

Experience with enterprise content management systems and ETL/ELT pipeline development. 

Knowledge of security, compliance (e.g., HIPAA), and governance for enterprise data. 

Excellent problem-solving, communication, and documentation skills. 

Preferred: 

Experience with large-scale embedding, retrieval, and ranking systems. 

Exposure to GenAI frameworks (LangChain, Hugging Face, Vertex AI, etc.). 

Background in healthcare, finance, or regulated industries is a plus. 

Sample Use Cases: 

Building enterprise RAG systems for customer support, knowledge management, and decision support.  

Architecting robust, scalable RAG pipelines for multi-modal and multi-source data.  

Implementing secure, compliant RAG solutions for regulated environments."

Other Requirements

null
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 226,300 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 December 2025 totaled $14.5 billion.

23 Benefits At HCLTech, we believe in empowering our employees with comprehensive benefits that support their professional growth and enhance their well-being. When you sign up for a career with us, you gain access to: https://rmkcdn.successfactors.com/147eb21f/a701dca9-f32d-4fc9-9447-6.svg Industry-benchmarked compensation https://rmkcdn.successfactors.com/147eb21f/b0c54381-ddcc-4a33-9b35-9.svg Best-in-class healthcare benefits https://rmkcdn.successfactors.com/147eb21f/b73027be-7aae-4d36-a090-4.svg Personal time off https://rmkcdn.successfactors.com/147eb21f/d5b4fdfd-2e99-4e26-9878-9.svg Maternity and paternity benefits https://rmkcdn.successfactors.com/147eb21f/3d42b0fc-4652-435a-9ece-c.svg Access to skills / higher education programs/resources https://rmkcdn.successfactors.com/147eb21f/aeddeaf2-9e25-4584-ad11-d.svg Discounts on products and services via Benefit Box https://rmkcdn.successfactors.com/147eb21f/a9609a3b-2700-4b3c-9d90-a.svg Participate in CSR programs and live life with a purpose https://rmkcdn.successfactors.com/147eb21f/c6e33851-710f-4634-bd69-f.svg Opportunities to grow and advance your career Note: The benefits listed above vary depending on the nature of your employment and the country where you work. Some benefits may be available in some countries but not in all.