Python Senior Developer - Data Analysis, SQL
India
Job Description
Python Senior Developer - Data Analysis, SQL
Mumbai, Maharashtra

Job Summary

Required Skills & Experience 2) 3-5 years of professional software development experience 2. Strong proficiency in Python 3. Advanced Python development skills, including experience with: o LangChain LangGraph or similar LLM frameworks o Hugging Face transformers o Vector databases (Qdrnt, Weaviate, or similar) o Embedding models (OpenAI, BERT, or similar) 4. Experience implementing RAG architecture or having Knowledge on any of the below ▪ Basic RAG Implementation: ▪ Document chunking and preprocessing ▪ Embedding generation and storage ▪ Vector similarity search ▪ LLM prompt engineering and context injection ▪ Hybrid RAG Architectures: ▪ Keyword-based + Dense / Sparse Vector Retrieval ▪ BM25 + Neural Search combinations ▪ Multi-index retrieval strategies ▪ Hybrid re-ranking approaches ▪ Advanced RAG Patterns: ▪ Parent-Child Document Chunking ▪ Recursive Retrieval ▪ Multi-Query RAG ▪ Hypothetical Document Embeddings (HyDE) ▪ Query Decomposition ▪ Self-Query RAG ▪ RAG Pipeline Components: ▪ Document Loaders and Parsers ▪ Text Splitters (Recursive, Semantic, Token-based) ▪ Embedding Models Integration ▪ Vector Store Operations ▪ Query Routing and Processing ▪ Response Generation and Synthesis ▪ RAG Enhancement Techniques: ▪ Auto-merging Retrieved Chunks ▪ Semantic Router Implementation ▪ Context Window Optimization ▪ Query Expansion Strategies ▪ Re-ranking Mechanisms ▪ Sentence Window Retrieval ▪ Advanced Retrieval Methods: ▪ Multi-Vector Retrieval ▪ Time-Weighted Retrieval ▪ Contextual Compression ▪ Dynamic Few-Shot Learning ▪ Cross-Encoder Re-ranking 5. Knowledge of modern AI/ML concepts and applications 6. Experience with graph databases (Neo4j, Amazon Neptune) 7. Hands-on experience with Grafana for monitoring and visualization 8. Strong knowledge of SQL and NoSQL databases 9. Proficiency with version control systems (Git)

Key Responsibilities

Required Skills & Experience 2) 3-5 years of professional software development experience 2. Strong proficiency in Python 3. Advanced Python development skills, including experience with: o LangChain LangGraph or similar LLM frameworks o Hugging Face transformers o Vector databases (Qdrnt, Weaviate, or similar) o Embedding models (OpenAI, BERT, or similar) 4. Experience implementing RAG architecture or having Knowledge on any of the below ▪ Basic RAG Implementation: ▪ Document chunking and preprocessing ▪ Embedding generation and storage ▪ Vector similarity search ▪ LLM prompt engineering and context injection ▪ Hybrid RAG Architectures: ▪ Keyword-based + Dense / Sparse Vector Retrieval ▪ BM25 + Neural Search combinations ▪ Multi-index retrieval strategies ▪ Hybrid re-ranking approaches ▪ Advanced RAG Patterns: ▪ Parent-Child Document Chunking ▪ Recursive Retrieval ▪ Multi-Query RAG ▪ Hypothetical Document Embeddings (HyDE) ▪ Query Decomposition ▪ Self-Query RAG ▪ RAG Pipeline Components: ▪ Document Loaders and Parsers ▪ Text Splitters (Recursive, Semantic, Token-based) ▪ Embedding Models Integration ▪ Vector Store Operations ▪ Query Routing and Processing ▪ Response Generation and Synthesis ▪ RAG Enhancement Techniques: ▪ Auto-merging Retrieved Chunks ▪ Semantic Router Implementation ▪ Context Window Optimization ▪ Query Expansion Strategies ▪ Re-ranking Mechanisms ▪ Sentence Window Retrieval ▪ Advanced Retrieval Methods: ▪ Multi-Vector Retrieval ▪ Time-Weighted Retrieval ▪ Contextual Compression ▪ Dynamic Few-Shot Learning ▪ Cross-Encoder Re-ranking 5. Knowledge of modern AI/ML concepts and applications 6. Experience with graph databases (Neo4j, Amazon Neptune) 7. Hands-on experience with Grafana for monitoring and visualization 8. Strong knowledge of SQL and NoSQL databases 9. Proficiency with version control systems (Git)

Skill Requirements

Required Skills & Experience 2) 3-5 years of professional software development experience 2. Strong proficiency in Python 3. Advanced Python development skills, including experience with: o LangChain LangGraph or similar LLM frameworks o Hugging Face transformers o Vector databases (Qdrnt, Weaviate, or similar) o Embedding models (OpenAI, BERT, or similar) 4. Experience implementing RAG architecture or having Knowledge on any of the below ▪ Basic RAG Implementation: ▪ Document chunking and preprocessing ▪ Embedding generation and storage ▪ Vector similarity search ▪ LLM prompt engineering and context injection ▪ Hybrid RAG Architectures: ▪ Keyword-based + Dense / Sparse Vector Retrieval ▪ BM25 + Neural Search combinations ▪ Multi-index retrieval strategies ▪ Hybrid re-ranking approaches ▪ Advanced RAG Patterns: ▪ Parent-Child Document Chunking ▪ Recursive Retrieval ▪ Multi-Query RAG ▪ Hypothetical Document Embeddings (HyDE) ▪ Query Decomposition ▪ Self-Query RAG ▪ RAG Pipeline Components: ▪ Document Loaders and Parsers ▪ Text Splitters (Recursive, Semantic, Token-based) ▪ Embedding Models Integration ▪ Vector Store Operations ▪ Query Routing and Processing ▪ Response Generation and Synthesis ▪ RAG Enhancement Techniques: ▪ Auto-merging Retrieved Chunks ▪ Semantic Router Implementation ▪ Context Window Optimization ▪ Query Expansion Strategies ▪ Re-ranking Mechanisms ▪ Sentence Window Retrieval ▪ Advanced Retrieval Methods: ▪ Multi-Vector Retrieval ▪ Time-Weighted Retrieval ▪ Contextual Compression ▪ Dynamic Few-Shot Learning ▪ Cross-Encoder Re-ranking 5. Knowledge of modern AI/ML concepts and applications 6. Experience with graph databases (Neo4j, Amazon Neptune) 7. Hands-on experience with Grafana for monitoring and visualization 8. Strong knowledge of SQL and NoSQL databases 9. Proficiency with version control systems (Git)

Other Requirements

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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 227,000 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 March 2026 totaled $14.7 billion.