Looking to build a product that’s AI-native, scalable, and built to grow? I’m a Full Stack Developer with 8+ years of experience delivering high-performance SaaS platforms, GPT-powered applications, and automation systems for startups, SMEs, and enterprise teams. From rapid prototyping to AI integration and cloud deployment, I handle the full product lifecycle with a strong emphasis on performance, scalability, and user-focused design. ✅ What I Bring: 🚀 AI-Native Development Tools I supercharge development with the latest AI coding assistants: • ClaudeCode + MCP - For intelligent code generation and planning • Cursor AI & AntiGravity - AI-enhanced IDEs for faster, cleaner builds • GitHub Copilot, Replit AI, Lovable.dev - Smart pair programming & suggestions 🧠 End-to-End Engineering • Full-stack app development: MVP to enterprise-grade • Integration of GPT/LLMs into frontend/backend workflows • Complex API builds & microservices architecture • Scalable DevOps: Docker, CI/CD, AWS, Kubernetes 🤖 AI + Automation • Custom GPT/Claude agent development • AI SaaS platforms, chatbots, AI-driven analytics • Workflow automation using LangChain, n8n, OpenAI, Pinecone 💡 Core Skills AI & Automation: ChatGPT, Claude AI, LangChain, Gemini, OpenAI API, AI Agents, LLMs, Vector Search (Pinecone), AI SaaS Platforms, n8n, Zapier, Generative AI, RPA, BPA, AI Workflows, Agentic Patterns, AI Prototyping Frontend: Next.js, React.js, Vue.js, Nuxt.js, Tailwind CSS, TypeScript Backend: Python, Node.js, Django, FastAPI, Flask, Laravel, NestJS, Express.js Databases & Storage: PostgreSQL, MySQL, MongoDB, Firebase, Supabase, Pinecone DevOps & Cloud: AWS (Lambda, EC2, S3, CloudFront), Google Cloud, Docker, Kubernetes, CI/CD, GitHub Actions, Serverless Architecture API Development: RESTful APIs, GraphQL, WebSockets, OpenAPI, JSON-RPC, AI API Integrations AI Coding Assistants: ClaudeCode, Cursor, Replit AI, Lovable.dev, GitHub Copilot, Google Antigravity 🌟 My Clients Sat Clients Say ⭐️⭐️⭐️⭐️⭐️ “Abdul Ghaffar delivered a rock-solid AI MVP in record time. Clear communication, smart architecture, and fast iterations - highly recommended!” ⭐️⭐️⭐️⭐️⭐️ “His understanding of LLMs and automation tools helped us save 30+ hours/week on manual workflows. Incredible value.” ⭐️⭐️⭐️⭐️⭐️ “I’ve worked with many developers - Abdul Ghaffar is on another level. Full stack and AI expertise in one person. Will hire again for sure.” Keywords: AI Developer, AI SaaS Developer, Generative AI Expert, Claude Developer, GPT Agent Developer, Full Stack Developer, SaaS Engineer, Python AI Developer, LangChain Developer, Node.js Developer, FastAPI Developer, Django AI Developer, OpenAI Integrations, Automation Engineer, AI Workflow Developer, AI Chatbot Developer, Replit AI Developer, Cursor IDE Developer, ClaudeCode Developer, AntiGravity Developer, AI in SaaS, LLM Integration Expert, MVP Developer, AI App Developer, n8n Expert, AI Consultant, Pinecone Engineer, AI API Expert

I help SaaS startups and growing businesses build scalable, high-performance web applications using Python and AWS that are built to handle real growth. With 6+ years of experience, 900+ hours on Upwork, 100% Job Success, and Top Rated status, I specialize in building production-ready backend systems and full-stack applications that are designed to scale. From designing scalable REST APIs to deploying production-ready applications on AWS, I ensure clean architecture, performance, and long-term maintainability. 🔥 𝗖𝗼𝗿𝗲 𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸 & 𝗦𝗸𝗶𝗹𝗹𝘀: 🔷 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: Django, Flask, FastAPI, Python, Django REST Framework, GraphQL, Celery, Sentry, PyTest 🔷 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: ReactJS, VueJS, JavaScript, HTML5, CSS3 🔷 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁: PostgreSQL, MongoDB, MySQL 🔷 𝗖𝗹𝗼𝘂𝗱 & 𝗗𝗲𝘃𝗢𝗽𝘀: AWS, Docker, Hostinger, NGINX, Gunicorn, uWSGI, Supervisorctl 🔷 𝗠𝗶𝗰𝗿𝗼𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲: Redis, RabbitMQ, Scalable Microservices 🔷 𝗣𝗮𝘆𝗺𝗲𝗻𝘁𝘀 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻: Stripe, PayPal 🔷 𝗩𝗲𝗿𝘀𝗶𝗼𝗻 𝗖𝗼𝗻𝘁𝗿𝗼𝗹: Git, GitHub, BitBucket, GitLab 🏆 𝗠𝘆 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 𝗜𝗻𝗰𝗹𝘂𝗱𝗲𝘀: 📌 Web Application Development 📌 API Development & Integration 📌 Scalable Microservices Architecture 📌 Real-time Dashboards & Customer Portals 📌 Secure Payment Gateway Integration 📌 Deployment & Server Management on AWS 🚀 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗛𝗶𝗿𝗲 𝗠𝗲: I am dedicated to Python and Django, enabling me to tackle complex projects with efficiency and precision. I have a proven track record of entering existing projects, quickly adapting, and delivering high-quality solutions. Whether it’s building a new web application, enhancing an existing platform, or ensuring robust deployments on the cloud, I am equipped to bring your vision to life. 💼 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗢𝗳𝗳𝗲𝗿𝗲𝗱: 💠 Full Stack Web Development (Django, Flask, ReactJS) 💠 RESTful API Design and Development 💠 Microservices and Scalable Architecture 💠 AWS Deployment and Server Management 💠 Real-time Dashboards & Data Visualization 💠 Custom Software Solutions and Consulting I am open to new challenges, whether short-term projects or long-term collaborations. Let’s build something great! Send me a message and let’s discuss your project goals today.

I become part of your team, not just another contractor. Recent & Current Projects: → Airline Revenue Management System (Python + ML) Built ML-powered demand forecasting and pricing optimization for a Japanese airline. XGBoost models predict bookings, load factors, and ADR across thousands of daily flights. → Enterprise Project Portfolio System (Vue 3/TypeScript + C#/.NET) Leading development for Fortescue Metals Group's Catalyst platform—financial tracking, Snowflake data pipelines, Primavera P6 integration. 18+ months and counting. → Government Geospatial Platform (Next.js + FastAPI) Delivered King County's stormwater retrofit planner—90,000+ roads analyzed with MapLibre GL JS, 60% faster data loading through intelligent caching. AI/ML Integration Experience: - LLM integration (OpenAI, Claude APIs) for production applications - RAG systems with vector databases - ML model training and deployment (XGBoost, scikit-learn) - Agentic workflows and automation Healthcare & Compliance Experience: - Jaspr Health: Patient-facing clinical app used in hospital emergency departments - PennDOT: Government systems with PII handling and security protocols Technical Stack: - Backend: Python (Django, FastAPI, Flask), C# (.NET Core), Node.js - Frontend: Vue.js (2 & 3), React, Next.js, TypeScript - Data: PostgreSQL, Snowflake, MongoDB, Elasticsearch - Cloud: AWS, Azure, Docker, Kubernetes - Specialized: GIS/Mapping, ML Pipelines, API Design

Full Stack Developer with 6+ years of experience building reliable, scalable, and smart web applications using Python, Django, Flask, FastAPI, React, Next.js, PostgreSQL, and AI-enhanced tools. First, I invite you to scroll down and explore the “Projects” section — you'll find real-world solutions I've delivered, including SaaS platforms, smart automation tools, AI-integrated apps, and admin dashboards. ➤ Frontend Development React.js, Next.js, Redux Toolkit, Tailwind CSS, Formik, Yup, HTML, CSS ➤ Backend Development Django, Django REST Framework, Flask, FastAPI, Celery, Redis, JWT Auth, File Processing ➤ Databases PostgreSQL, MongoDB, ChromaDB, SQLite ➤ AI, Automation & Data Extraction OpenAI GPT-4, Whisper, LangChain, ChromaDB, Automation Pipelines, Prompt Engineering, CSV/PDF/Excel parsing, Web scraping, Structured data transformation ➤ DevOps & Deployment Docker, Docker Compose, AWS EC2, Git, Postman, Swagger ➤ Integrations & APIs Stripe, Oracle HCM API Integration, Social Logins, Microsoft Graph API, Google Authenticator, OAuth2, FFmpeg, yt-dlp Development Process: ✓ Planning – Gather requirements, define scope, and recommend the best approach ✓ Frontend – Design and build responsive, user-friendly interfaces ✓ Backend – Develop fast, secure APIs and business logic ✓ Testing – Unit and integration tests for stable delivery ✓ Deployment – Dockerized production setup with cloud deployment ✓ Maintenance – Ongoing support, feedback-driven iterations I'm open to test projects, milestone-based work, and long-term collaborations. Let’s schedule a free call to discuss how I can help bring your idea to life — from concept to deployment.

Full-Stack Developer (5years) specializing in Node.js, Python, React, and Angular. I build and maintain production web applications end-to-end: UI → API → Database → Deployment. What I can do for you: ▪️Build SaaS apps, dashboards, admin panels, and internal tools ▪️Develop REST / GraphQL APIs and integrate third-party services ▪️Implement authentication and authorization (JWT, OAuth, RBAC) ▪️Create responsive UI using React and Angular (2+) ▪️Design and optimize databases: MongoDB, PostgreSQL, MySQL, MS SQL ▪️Set up CI/CD with GitHub Actions, Docker, and deploy on AWS | Azure AI Integrations : ▪️In-app chat assistant experiences ▪️Summarization, extraction, and classification for documents/forms/tickets ▪️Knowledge-base search using embeddings + RAG patterns Legacy + modernization support: ▪️Maintain and upgrade AngularJS, jQuery, and Sails.js ▪️Migrate legacy codebases to modern stacks with minimal disruption Working style: ▪️Clear communication and regular updates ▪️Strong debugging and problem-solving ▪️Clean, maintainable code focused on stability and performance If you need someone who can deliver clean code, fix issues fast, and communicate clearly, I can help.

Hi, I'm Sagar, a passionate Full-Stack Developer, AI Solutions Architect, and UI/UX Designer with over 10+ years of hands-on experience delivering high-quality, scalable, and performance-driven digital solutions for clients across the globe. I specialize in end-to-end web, mobile, and AI-powered application development, working with startups, agencies, and enterprise-level businesses to bring their digital ideas to life with clean code, smart architecture, intelligent automation, and beautiful design. 🔧 My Technical Toolbox: ⚛️ React.js / Frontend Engineering - Responsive, interactive UI using React.js + Tailwind CSS / Material UI - Next.js for server-side rendering (SSR) and static site generation (SSG) - API integration (REST, GraphQL), custom hooks, and state management with Redux Toolkit - UI animation and transitions for an enhanced user experience 🖥️ Node.js / Backend Development - Scalable REST APIs, authentication systems (JWT, OAuth) - MongoDB, PostgreSQL, and MySQL database design and optimization - Real-time features using WebSockets and Socket.IO - Secure deployment, CI/CD, and API documentation 🤖 AI & Machine Learning Integration - AI-powered chatbots, recommendation engines, and intelligent search - Integration of pre-trained AI/ML APIs (OpenAI, Google Cloud AI, AWS AI Services) - Predictive analytics dashboards and business intelligence solutions - Data automation, sentiment analysis, and image recognition applications 🐍 Python Development - Scripting, automation, data scraping, and backend logic - FastAPI and Flask for lightweight, secure web services - Integration with machine learning models and AI-powered APIs - Custom AI tool development for niche business cases 📊 ERPNext Customization & Integration - Full ERPNext setup & module customization (HR, Accounting, CRM, Inventory) - Integration with third-party services like payment gateways, SMS, email - Custom script writing (client/server-side), reporting, and workflow automation - System upgrades, performance tuning, and role-based access configuration 📱 Mobile App Development - Cross-platform app development using React Native or Flutter - Real-time chat, push notifications, Firebase/Auth integrations - AI-enhanced app features like voice commands, image recognition, and smart notifications - App Store / Play Store publishing & version management 🌐 WordPress Development (Advanced) - Custom themes and plugin development tailored to your business logic - WooCommerce integration, payment gateways, and multi-vendor setups - Headless WordPress with React/Next.js for lightning-fast performance - Site speed optimization, Core Web Vitals compliance, SEO setup 🎨 UI/UX Design That Converts - Wireframes, user journeys, and high-fidelity prototypes using Figma/Adobe XD - Clean, intuitive, and accessible interfaces tailored for your audience - Mobile-first and responsive design best practices --- 💡 Why Work With Me? ✅ Clear, honest communication ✅ Strong attention to detail and quality assurance ✅ Agile mindset – flexible and collaborative workflow ✅ Timely delivery with complete documentation ✅ Long-term relationship mindset – your success is my success Whether you need a full-stack AI-powered solution, a modern mobile app, a custom WordPress build, or a seamless ERP system, I'm ready to jump in and make it happen. 📩 Let’s talk! Share your vision with me, and I’ll help you turn it into a powerful, polished, and scalable digital product enhanced with smart AI capabilities.

Hi, I am Ehtasham. I am a full-stack web developer with over 7+ years of industry experience. I have experience in Python, Django and React, Django-rest-API, web development, data (automation, data parsing, conversions), MySQL, PostgreSQL, SQL. Feel free to contact me and I'll be happy to do any python tasks or Django-based projects. Full-time freelancer, available 24/7, so feel free to contact me.

Most Proptech and Fintech teams I talk to are not short on developers. They are short on someone who understands why a 2-day delay in loan underwriting costs real money, or why a property valuation that only works on clean data is useless to investors. I work inside Proptech and Fintech teams as a forward deployed engineer. I take ownership of the hard parts: architecture, AI integration, compliance, and shipping working software to production. I have done this for 6+ years across 36 Upwork contracts and $100K+ in earnings. Here is what that looks like in practice: • Built an off-market real estate marketplace that reached 18K+ users and $23K MRR • Shipped an AI property valuation tool with 92% accuracy in 8 weeks • Cut manual matching time by 40% for a property management platform serving 10,000+ properties • Reduced operational overhead by 30% and sped up loan decisions by 15% for an AI loan origination platform • Processed 1M+ documents and cut manual data entry by 60% through accounting system integrations • Rebuilt a checkout and payments system with Stripe integration in 12 weeks for a B2B marketplace I am not the right person if you need someone to execute tickets in isolation. I am the right person if you want an engineer who sits in your technical meetings, challenges assumptions before they become expensive mistakes, and ships systems your team can maintain. How I work: I join your Slack, standups, and Jira. I ask hard questions early about compliance and scalability. I ship in two-week sprints so you see working software, not just architecture diagrams. I document decisions and write runbooks so your team can maintain what we build without depending on me forever. My typical stack is Python (Django, FastAPI), React, Next.js, PostgreSQL, AWS, Docker, and Stripe. For AI work I use Claude, Kimi, and GPT, but I pick the tool based on your compliance needs and performance requirements, not the hype. Who this is for: • Proptech founders building property marketplaces, valuation tools, or rental platforms • Fintech founders launching lending platforms, borrower portals, or compliance-heavy payment systems • Teams that have outgrown their MVP and need architecture that holds up under real load • Non-technical founders who need a technical partner who speaks plain English

TRANSFORM BUSINESS OPERATIONS WITH RETOOL, REACT, PYTHON & AUTOMATION🚀 At KrastySoft, we help companies build smarter systems using Retool, React, Python, and modern automation tools. We create internal tools, dashboards, admin panels, CRM platforms, ERP workflows, and custom web apps that improve efficiency, reduce manual work, and scale with your business. As a senior full stack developer team, we combine fast delivery with clean architecture, secure integrations, and long-term maintainability RETOOL DEVELOPMENT & LOW CODE SOLUTIONS We specialize in Retool development for startups, SaaS companies, ecommerce brands, and enterprise teams. As an experienced Retool developer and Retool consultant, we build custom internal systems such as: - Retool CRM and sales dashboards - Admin dashboard / admin panel React solutions - Inventory management system - Order management system - ERP operations dashboards - Financial dashboard and Stripe dashboard - Ecommerce dashboard with Stripe data - SQL Server / PostgreSQL integrations - Retool authentication systems - Data visualization dashboard tools Using low code development, no code automation, Bubble, Appsmith, Adalo, and custom backend APIs, we launch business software faster without sacrificing flexibility REACT FRONTEND DEVELOPMENT Our team includes senior React developers and frontend engineers building modern interfaces for SaaS products and internal platforms. We deliver: - React dashboard developer services / API-driven React apps - Custom dashboards and analytics tools - Next.js developer solutions - Primereact dashboard interfaces - Responsive web frontend development - Shopify app developer integrations We use React, JavaScript, HTML CSS, Tailwind, and scalable frontend architecture for fast, clean, conversion-focused products PYTHON BACKEND & API ENGINEERING Our backend team includes expert Python developers, backend engineers, and FastAPI developers building reliable systems for web apps and automation We provide: - Python backend developer services / Python API developer solutions - FastAPI developer / Django backend developer work - Python microservices architecture / Python data processing pipelines - REST API development - Stripe API developer integrations - CRM integration / ERP integration - Postgres developer and Supabase developer support - SQL optimization/database design - AWS backend developer systems - CI CD pipelines and deployment automation AUTOMATION & AI WORKFLOWS We help businesses automate operations using n8n, Zapier, Make, and Python automation. Popular solutions: - Lead routing & CRM automation API - HubSpot automation / Zoho CRM workflows - Marketing automation - Social media automation - YouTube automation - Twilio messaging flows - Real estate CRM systems - GHL / GoHighLevel developer integrations - AI lead generator systems - Business automation bots WHY CLIENTS CHOOSE KRASTYSOFT 🤝 - Expert in Retool, React, Python, n8n, Zapier - Senior software developer & automation engineer team - Fast communication and clean code - Scalable SaaS software and internal tools - Secure API integration and database development - Focus on ROI, speed, and business growth Ready to build a custom dashboard, automate workflows, or launch your next SaaS product? LET’S DISCUSS YOUR PROJECT TODAY.

I build complete SaaS products — from database to API to web app to mobile app — and I integrate AI where it creates real value. If you have an idea for a SaaS, a web platform, or a mobile app, I can take it from whiteboard to live product without you needing to manage multiple developers. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ WHAT I BUILD ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ⚙️ BACKEND & APIs (Python) Django · Django REST Framework · FastAPI Celery · Redis · WebSockets · OAuth2 · JWT PostgreSQL · MySQL · MongoDB · Firebase Stripe & payment integrations · third-party APIs ⚛️ FRONTEND (JavaScript) React.js · Next.js · Vue.js · Nuxt.js TypeScript · Tailwind CSS · Material UI Redux · Zustand · React Query Responsive, pixel-perfect UIs 📱 MOBILE React Native (iOS & Android) Expo & bare workflow Push notifications · offline support App Store & Play Store deployment 🤖 AI & MACHINE LEARNING LLM integration — OpenAI, Claude, Gemini RAG pipelines — LangChain, LlamaIndex Vector databases — Pinecone, Weaviate, ChromaDB Computer Vision — PyTorch, TensorFlow, OpenCV, YOLO NLP — BERT, fine-tuning, text classification AI Agents & workflow automation ☁️ DEVOPS & DEPLOYMENT AWS · GCP · Azure · DigitalOcean · Railway · Vercel Docker · Nginx · CI/CD (GitHub Actions) Domain, SSL, production setup — fully live product ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ TYPES OF PROJECTS I DELIVER ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✦ SaaS Platforms Multi-tenant architecture, subscription billing (Stripe), role-based access, dashboards, admin panels ✦ AI-Powered Web Apps Chatbots trained on your data, document Q&A systems, AI content tools, automation pipelines ✦ Mobile Apps (iOS & Android) React Native apps with Django/FastAPI backend, real-time features, third-party integrations ✦ REST & GraphQL APIs Scalable, documented, tested APIs that your frontend or mobile team can build on ✦ MVPs & Startups Fast, clean MVP in 4–8 weeks so you can validate and raise — built to scale when you need to ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ TECH STACK AT A GLANCE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Backend → Python, Django, FastAPI, Node.js, Express Frontend → React, Next.js, Vue, Nuxt, TypeScript Mobile → React Native, Expo AI/ML → OpenAI, LangChain, PyTorch, TensorFlow, OpenCV Database → PostgreSQL, MongoDB, MySQL, Redis, Firebase Cloud → AWS, GCP, Docker, Nginx, GitHub Actions ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ WORKING WITH ME ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✔ US EST mornings & full EU business hours available ✔ Daily updates — you always know the status ✔ Clean, documented, maintainable code ✔ Agile process — Jira, Linear, Notion, Slack, GitHub ✔ I handle deployment — you get a live product You bring the idea. I build the product. Let's talk.