Hire the best Neo4j Developers in Kolkata, IN
Check out Neo4j Developers in Kolkata, IN with the skills you need for your next job.
- $50 hourly
- 5.0/5
- (10 jobs)
With 8+ years of experience in AI/ML, Generative AI (Gen AI), and Data Engineering — and as a former senior engineer at Microsoft, Meta, and Google, and an Expert-Vetted talent with a 100% Job Success Score on Upwork — I bring a diverse and results-driven skillset to design, architect, and deliver intelligent, high-performance systems. These solutions drive real-time decisions, scale seamlessly to enterprise demand, and address complex challenges across data pipelines, infrastructure, and applied AI. I specialize in an AI-first strategy, backed by robust Data Engineering foundations — delivering end-to-end consulting that spans everything from orchestrating large-scale pipelines and semantic data layers to building agentic LLM workflows and predictive models. Every solution is cost-optimized without compromising performance or efficiency, delivering production-ready systems that are scalable, maintainable, and built for long-term impact — whether for small teams or large enterprises. 🧠 Gen AI and Agentic AI • LangChain · LangGraph · LlamaIndex • OpenAI · Claude · Gemini · Hugging Face Transformers • Retrieval-Augmented Generation (RAG, Self-RAG, Corrective RAG, Advanced RAG Techniques) • Agentic AI Workflows · Multi-Agent Orchestration · Context-Persistent AI Systems • Prompt Engineering & Tuning: Chain-of-Thought (CoT), ReAct, LoRA, QLoRA, PEFT, RLHF • Embedding Pipelines: Sentence-BERT, OpenAI Embeddings, Domain-Specific Vectors • Semantic Memory Systems · Graph-Enriched Recall (Neo4j) • Multimodal Capabilities: Computer Vision, Audio, Image, Conversational AI • Data-Driven Actions · Intent Detection · Intelligent Routing & Decision Automation 🔄 Data Engineering & Platform Architecture • Databricks · Snowflake · Apache Spark (PySpark) · Delta Lake · Apache Hudi · Apache Iceberg • dbt (Contracts) · Apache Airflow · Apache NiFi · Prefect · AWS Glue · GCP Data Fusion · Azure Data Factory • BigQuery · Amazon Redshift · Azure Synapse Analytics • Event-Driven Pipelines: Kafka · Kinesis · Pub/Sub · Event Hubs • Data Mesh · Cross-Cloud Federation · ETL & ELT Workflows • Data Quality & Governance: OpenMetadata · Great Expectations · Unity Catalog • Secure Integration: Mulesoft · REST APIs · OAuth · Cloud Functions • Real-Time Analytics · Metadata Lineage · Scalable Pipeline Automation ⚙️ Core Engineering, ML, and Infrastructure • Python · Java · Go · SQL · Bash · Git · REST APIs • Scikit-Learn · XGBoost · LightGBM · MLFlow · Model Evaluation & Tuning • Model Deployment: Azure ML · SageMaker · Vertex AI · Dockerized Pipelines • PostgreSQL · MongoDB · Redis · Cassandra • CI/CD & Infra: Docker · Kubernetes · Terraform · GitHub Actions · Jenkins • Cloud Monitoring: Prometheus · Grafana · CloudWatch · Azure Monitor • Search & Logging: ELK Stack · OpenTelemetry · Distributed Tracing • Event Streams: Apache Kafka · Amazon SQS · RabbitMQ • Data Security: Role-Based Access · Tokenization · Environment Isolation 💼 Projects & Business Impact Project 1 – Agentic AI Customer Support Assistant for E-Commerce: Built an autonomous AI support representative for a retail brand, capable of handling email, live chat, and voice interfaces. Using agentic workflows and intent detection, the system managed product inquiries, order issues, and dispute resolutions — reducing live agent workload by 60%, improving first-response times by 40%, and boosting customer satisfaction across multiple regions. Project 2 – Enterprise Gen AI Memory System for Internal Teams: Developed a context-aware memory system that captured historical queries, decision trails, and file-specific knowledge across teams. Leveraging LLMs, vector databases, and multi-agent orchestration, this enabled seamless assistant switching (e.g., chat → code → summarization) without context loss — improving productivity by 35% and cutting task duplication by over 50%. Project 3 – Real-Time Fraud Detection for Prepaid & COD Payments Designed a fraud detection platform for a fintech firm offering prepaid cards and COD services. Integrated transaction and behavioral data across Spark, dbt, and Snowflake. Applied LLM-assisted anomaly detection to flag high-risk transactions and fake COD attempts — reducing fraudulent orders by 33%, increasing delivery success rates by 22%, and improving merchant trust and fulfilment ROI.
Neo4j
Data ScienceAI Agent DevelopmentDatabricks PlatformComputer VisionETL PipelineVector DatabaseData EngineeringSnowflakeApache SparkPythonRetrieval Augmented GenerationLLM Prompt EngineeringLangChainGenerative AI Want to browse more freelancers?
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