Freelance Data Engineers in DelhiFreelance Data Engineers in Delhi
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Ajay Bidyarthy's avatar
Ajay Bidyarthy
proDelhi, India
AI Engineer - Python, ML, LLM, RAG, Chatbot, SaaS, AWS, APIs
6
Followers
AI Engineer - Python, ML, LLM, RAG, Chatbot, SaaS, AWS, APIs
Cover image for Title: AI App Development |
Title: AI App Development | LLMs, Chatbots, RAG & Automation Solutions Description: I design and develop intelligent AI-powered applications that automate workflows, enhance user experience, and unlock actionable insights. From custom chatbots to advanced LLM-based systems, I build scalable and production-ready solutions tailored to your business needs. Whether you're a startup looking to integrate AI or an enterprise aiming to optimize operations, I deliver robust, efficient, and future-ready AI systems. What I Offer: ✔Custom AI applications using LLMs ✔Chatbot development (GPT, Claude, RAG-based) ✔AI workflow automation (N8N, Zapier, Make) ✔API integrations and backend systems ✔AI SaaS product development Tech Stack: Python, FastAPI, LangChain, OpenAI, Claude, Supabase, PostgreSQL, React, Next.js, AWS
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Cover image for I’m a global consultant helping
I’m a global consultant helping entrepreneurs to gear-up their businesses. I am specialize in building IT products scratch to development—covering web and mobile applications, data science, analytics, machine learning, and AI solutions. Would you like to explore how we can help streamline your operations or launch your next big idea? Let’s discuss your requirements and explore tailored solutions for your business. Looking forward to hearing from you!
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Cover image for I design efficient data models,
I design efficient data models, handle smooth data migrations, and develop scalable databases. I also build secure APIs that connect systems seamlessly and support reliable, data-driven applications.
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Cover image for I design and manage database
I design and manage database systems using Elasticsearch, Neo4j, and Supabase to enable high-speed search, rich data relationships, and scalable backend architectures. My work includes building efficient data models, optimizing performance, and ensuring secure, reliable access. I oversee the full lifecycle—from setup and integration to deployment and continuous optimization.
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Data Engineer(8)
ANIMESH SINGH's avatar
ANIMESH SINGH
Delhi, India
Data & AI Engineer
Data & AI Engineer
Cover image for Problem: Many organizations still process invoices
Problem: Many organizations still process invoices manually by reading PDF documents and entering key details (invoice number, vendor, amount, etc.) into systems. This process is slow, error-prone, and difficult to scale, and it also makes it harder to detect duplicate invoices or incorrect totals. Solution: This project builds an automated invoice processing pipeline that converts uploaded invoice PDFs into structured data. It uses OCR to extract text, LLMs to identify invoice fields, validation checks to ensure correctness, and Kafka-based event streaming to manage the processing pipeline. The extracted data is stored in PostgreSQL and visualized through a dashboard, enabling faster, scalable, and more reliable invoice processing.
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Cover image for Problem Statement Urban traffic management systems
Problem Statement Urban traffic management systems lack real-time, integrated data combining traffic conditions with weather patterns. This results in poor routing decisions, delayed emergency responses, and inefficient traffic flow management. Solution Developed a comprehensive real-time ETL pipeline that integrates traffic APIs and weather data sources, processes millions of data points, and delivers actionable insights through interactive dashboards for traffic management and route optimization.
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Cover image for A fully Dockerized real-time IoT
A fully Dockerized real-time IoT ETL pipeline that simulates device telemetry, processes events through MQTT and Kafka, orchestrates workflows with Airflow, and delivers real-time alerts and insights to CRM systems with monitoring via Grafana and Loki.
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Cover image for A fully local RAG pipeline
A fully local RAG pipeline that transforms your PDFs into a queryable knowledge base using FAISS vector search and Ollama LLMs. No cloud, no API keys - just private, grounded document intelligence running entirely on your machine.
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Data Engineer(3)
Saransh Purohit's avatar
Saransh Purohit
Delhi, India
Data Analyst | SQL & Power BI Specialist
New to Contra
Data Analyst | SQL & Power BI Specialist
Cover image for In this technical deep-dive, I
In this technical deep-dive, I engineered a robust SQL script to extract high-level financial insights from 20+ years of Nifty 50 data. I moved beyond basic queries to implement complex analytical functions that simulate real-world market tracking. Market Sentiment Logic: Developed a CASE-based classifier to identify Bullish/Bearish trends using 50-day Moving Averages. Volatility & Risk: Calculated day-on-day price fluctuations and ranked high-risk trading days. Momentum Tracking: Integrated window functions (LAG/LEAD) to compute RSI-base logic and 30-day price momentum. Efficiency Metrics: Analyzed Turnover Efficiency to understand market liquidity during peak trading hours. This project demonstrates my ability to handle large-scale financial datasets and translate raw numbers into strategic market indicators.
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Cover image for Risk management analysis
Risk management analysis
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Cover image for Developed a comprehensive Stock Market
Developed a comprehensive Stock Market Analysis tool using SQL and Power BI to visualize Nifty 50 data. Data Processing: Cleaned and transformed raw financial datasets using Excel and SQL queries. Interactive Visuals: Built 3 dynamic dashboards tracking price trends, volatility, and sectoral rotations. Business Insights: Identified key market drivers and risk factors through historical data analysis. Financial Expertise: Proven experience in stock market data analysis (Nifty 50). Tech Stack: Power BI, SQL, Microsoft Excel.
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Cover image for Nifty 50 Stock Market Analysis
Nifty 50 Stock Market Analysis
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Data Engineer(1)
Khushi Mehta's avatar
Khushi Mehta
Delhi, India
Data Scientist & AI Content Specialist | Dashboards • ML App
Data Scientist & AI Content Specialist | Dashboards • ML App
Cover image for BizBot: AI-Powered Business Data Chatbot Development
BizBot: AI-Powered Business Data Chatbot Development
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Cover image for Cyber Crime Analysis using Machine Learning
Cyber Crime Analysis using Machine Learning
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Cover image for Customer and Sales Insights Dashboard
Customer and Sales Insights Dashboard
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Data Engineer(1)
Rakshak Raina's avatar
Rakshak Raina
Delhi, India
Data Science & AI Projects Expert | Python & Azure ML
Data Science & AI Projects Expert | Python & Azure ML
Cover image for Distinguishing between the Drip/Sprinkler System
Distinguishing between the Drip/Sprinkler System
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Cover image for Segmentation of Retinal Images using Transformer-based models
Segmentation of Retinal Images using Transformer-based models
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Cover image for Distinguishing Lightweight Block Ciphers in Encrypted Images
Distinguishing Lightweight Block Ciphers in Encrypted Images
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Data Engineer(2)
Sachin Sharma's avatar
Sachin Sharma
Delhi, India
Skilled Engineer, Developer & Strategist
Skilled Engineer, Developer & Strategist
Cover image for Eleb2b
Eleb2b
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Cover image for AI Recommendation Engine
AI Recommendation Engine
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Cover image for EFY Chennai Expo
EFY Chennai Expo
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Cover image for Hotel Management System - .NET
Hotel Management System - .NET
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Data Engineer(1)