Freelance Data Engineers in KarachiFreelance Data Engineers in Karachi
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Muhammad Jarir Kanji's avatar
Muhammad Jarir Kanji
Karachi City, Pakistan
Data Scientist Transforming Ideas into Solutions
$1k+
Earned
2x
Hired
6
Followers
Data Scientist Transforming Ideas into Solutions
Cover image for Data engineering & R Development at the WHO
Data engineering & R Development at the WHO
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24
Cover image for Data Engineering & AI/ML Lead at SaaS startup
Data Engineering & AI/ML Lead at SaaS startup
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12
Cover image for Content Moderation using NLP & LLMs for a SaaS startup
Content Moderation using NLP & LLMs for a SaaS startup
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26
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Data Engineer(3)
Umar Aurangzeb's avatar
Umar Aurangzeb
Karachi, Pakistan
I build products that ship and ideas that scale.
I build products that ship and ideas that scale.
Cover image for I recently engineered a real-time
I recently engineered a real-time tracking system for a school to replace static reports with continuous feedback. Using a Google Sheets-to-Looker Studio pipeline, I automated the transition from raw teacher observations to parent-facing insights. Key Deliverables: Live Pipeline: Structured Sheets input for teachers to log 12+ data points per student daily. Grit Scoring Engine: Built custom logic weighting effort over mastery using cohort benchmarks. Dynamic URL Security: Implemented unique, filtered dashboard links for secure parent/student access. Automated Insights: Built-in trend indicators (Improving/Stable/Declining) for instant intervention. The Impact: The client now uses a live command center that eliminates manual reporting and provides real-time actionable intelligence.
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132
Cover image for Designed and built an AI-driven
Designed and built an AI-driven regulatory compliance assistant enabling financial teams to automatically analyze policies, draft compliant documentation, and evaluate regulatory risk in real-time. Key Achievements: Reduced manual policy review effort through automated AI-based document analysis. Built a RAG architecture combining scraped regulatory data and semantic retrieval. Implemented compliance scoring algorithms for structured risk evaluation. Integrated conversational AI for contextual regulatory Q&A.
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118
Cover image for PowerPresent.AI is an AI-powered presentation
PowerPresent.AI is an AI-powered presentation maker designed to automate and modernize the way presentations are created. It enables users to generate high-quality, structured presentations within seconds using AI. The platform is built with a Next.js frontend and a Convex database, with an AI backend powered by LangChain and LangGraph to handle intelligent content generation, slide structuring, and flow optimization. By combining modern full-stack architecture with advanced AI orchestration, PowerPresent AI delivers fast, scalable, and reliable presentation generation eliminating manual slide creation while maintaining clarity and consistency.
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172
Cover image for Full-Stack Medical Consultation Platform with Next.js & Node.js
My Mashwara is a full-stack platform built using Next.js and Node.js that provides third-party medical consultation services. The platform features three dedicated dashboards: Admin, Doctor, and Patient. Patients can seamlessly book appointments with doctors through an intuitive interface, while administrators manage and oversee cases across the platform. The system is integrated with Google Meet for virtual consultations and includes a personalized calendar for doctors, allowing them to set their availability so patients can book appointments accordingly.
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212
Data Engineer(1)
Moiz Ahmed Mansoori's avatar
Moiz Ahmed Mansoori
Karachi, Pakistan
AI Assistants, RAG Chatbots & Business Workflow Automation
New to Contra
AI Assistants, RAG Chatbots & Business Workflow Automation
Cover image for QueryMind lets you query a
QueryMind lets you query a real database using plain English. Type a question, get an answer — no SQL knowledge needed. Built a production-grade AI agent using LangGraph that converts natural language to SQL, executes it on a real PostgreSQL database with 100,000+ rows, and automatically corrects errors in a retry loop if the query fails. Key features: 7-node LangGraph agent with conditional routing and self-correction pgvector semantic search for intelligent schema retrieval Full observability dashboard with real-time metrics and query history Trace replay — see every step the agent took to answer your question Deployed live: Next.js frontend on Vercel, FastAPI backend on Render Tech: LangGraph · Groq LLaMA 3.3 70B · PostgreSQL · pgvector · FastAPI · Next.js · Tailwind CSS Github: https://github.com/moiz-mansoori/QueryMind-NL2SQL-Agent-System
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30
Cover image for Built AIRO, a 6-agent ML
Built AIRO, a 6-agent ML automation system using LangGraph and Groq LLaMA 3.3. The system automates the entire ML pipeline from data ingestion to final report generation. Ran 18 experiments achieving RandomForest f1_macro of 0.7329. Features parallel training, MLflow tracking, SHAP explainability, and a dark Streamlit UI with live log streaming.
2
137
Cover image for Built a deployed AI tool
Built a deployed AI tool that lets users upload research papers and query them using natural language. RAG pipeline with vector search retrieves precise context-aware answers. Features PDF parsing, AI summaries, topic modeling, and citation extraction. Live on Render.
6
3
230
Cover image for Built a full-stack Todo app
Built a full-stack Todo app across 5 phases — CLI to cloud-native. Phase 3 adds AI chatbot via LangChain and Groq for natural language task management. Phase 4 containerized with Docker and Kubernetes. Phase 5 deployed on Vercel with Neon PostgreSQL. 4 live deployments.
1
140
Data Engineer(1)
Nauman Arif's avatar
Nauman Arif
Karachi, Pakistan
Automation Expert: Web Scraping & Data Extraction
Automation Expert: Web Scraping & Data Extraction
Cover image for Business Directory Scraper with Selenium
Business Directory Scraper with Selenium
0
10
Cover image for Web Scraper for Stocks Data
Web Scraper for Stocks Data
0
3
Cover image for E-Sports Data Scraper with Proxies
E-Sports Data Scraper with Proxies
0
2
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Data Engineer(3)
Ali Ahmed Dar's avatar
Ali Ahmed Dar
Karachi, Pakistan
Selenium Expert | Web Scraping & Data Extraction | AI Bot
New to Contra
Selenium Expert | Web Scraping & Data Extraction | AI Bot
Cover image for I developed a Python-based automation
I developed a Python-based automation bot that monitors internet speed and logs download/upload values every 15 minutes. The data is saved in real-time to a Google Spreadsheet, along with timestamps and direct result links from Speedtest.net (http://Speedtest.net). The bot can run silently or display a GUI countdown. It helps remote teams, IT professionals, and analysts track internet stability over time.
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44
Cover image for The goal was to generate
The goal was to generate niche-targeted Instagram leads with verified emails for outreach and marketing purposes. I built a Selenium-based automation tool that scrapes profile links and emails from Google search results and Instagram. Data was stored in MongoDB and exported to Excel with clean formatting. This project helped my clients grow their contact list with real, actionable leads from their chosen niche
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11
Cover image for I developed a Python-based YouTube
I developed a Python-based YouTube Data Extraction Tool to collect and organize detailed video analytics from YouTube channels. This tool automates the process of gathering structured video data for market research, trend analysis, and content strategy.
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15
Cover image for I developed a LinkedIn automation
I developed a LinkedIn automation bot that continuously monitors new job postings based on specific keywords and filters. The bot sends real-time job alerts directly to WhatsApp and Gmail, ensuring users never miss relevant opportunities. It also supports automated Easy Apply functionality to speed up the job application process. This solution helps job seekers save time, stay ahead of competition, and apply faster using a fully automated workflow built with Python and browser automation.
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25
Data Engineer(1)
M. Hammad Hassan's avatar
M. Hammad Hassan
Karachi, Pakistan
Senior Software Developer | Tutor
Senior Software Developer | Tutor
Cover image for Built an eBay Product Scraping Web App from scratch using Py...
Built an eBay Product Scraping Web App from scratch using Python (Django) backend and Tailwind CSS with Django Templates frontend. Users can set number of processing threads, product fetch limit, and provide an eBay product list URL to scrape. The app processes listings efficiently, scraping key product details while showing live progress. Fully responsive UI, optimized for performance, and capable of handling large-scale scraping tasks with configurable concurrency.
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14
Cover image for Built an AI-Powered Resume Analyzer using FastAPI (backend) ...
Built an AI-Powered Resume Analyzer using FastAPI (backend) and React.js (frontend). Users upload resumes, which are processed with LLMs and advanced NLP techniques to extract, analyze, and score key skills, experience, and keywords. Generates structured, downloadable reports in CSV/XLSX formats. Features include real-time progress tracking, secure file handling, and a responsive, user-friendly interface. Ideal for recruiters, HR teams, and career platforms.
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14
Cover image for A large-scale online meal subscription and food ordering pla...
A large-scale online meal subscription and food ordering platform serving the Middle East, allowing users to generate personalized meal plans based on calorie goals, dietary preferences, allergies, and scheduling constraints. I worked on an existing Laravel monolith, migrating the payment system from Stripe to a local provider, implementing advanced meal plan customization (add-ons, extra meals, snacks), expanding admin controls, and improving system performance and reliability. The platform supports tens of thousands of concurrent users with high availability and data consistency.
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7
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Data Engineer(1)