I'm a seasoned Python developer specializing in automated trading systems, market data integration, and quantitative finance solutions. With deep expertise across multiple broker APIs and trading platforms, I help traders and funds automate strategies, optimize execution, and scale their operations. Core Expertise: My core expertise includes OpenAI, Gemini, LangChain, LangGraph, Retrieval-Augmented Generation (RAG), n8n automation, AI agents, and workflow orchestration, enabling reliable, scalable, and production-ready AI systems. I have extensive experience with OpenAI, LLMs, embeddings, vector databases (FAISS, Chroma), prompt engineering, and AI evaluation pipelines. Broker Integration: IBKR TWS , Charles Schwab , Tradovate , NautilusTrader , Pine Script, Binance (Spot Futures Coin-M), Bittrex, KuCoin, ToroBase. Asset Classes: Equities, Options, Futures, Commodities, Cryptocurrencies, NFTs Trading Platforms: MT5/MT4, AmiBroker, NinjaTrader integration Market Data: databento, Alpha Vantage, Polygon io, real-time feeds and historical data processing Automation & Bots: Discord data filters, Telegram bots, copy trading systems, OpenSea/Etherscan integration, slack, gmail, telegram integration. What I Deliver: ✓ HFT system with milliseconds based frequency to scan to trade to monitoring. ✓ Automated trading bots with robust risk management ✓ Custom indicators and backtesting frameworks ✓ Multi-exchange arbitrage and market-making systems ✓ Real-time alerting and signal distribution ✓ Portfolio management and execution optimization ✓ Web/desktop copy trading applications Infrastructure & Deployment: Cloud infrastructure: AWS, GCP, Azure DevOps architecture for high-availability trading systems Scalable, low-latency execution pipelines Why Work With Me: I understand that in quantitative trading, reliability and precision are non-negotiable. I deliver production-ready code with proper error handling, logging, and monitoring. Whether you're backtesting a strategy, automating execution, or building a complete trading platform, I ensure your system runs smoothly 24/7. Let's discuss your trading system requirements and build something profitable together.

Available Now. Most founders don't need another developer, they need a technical partner who can transform an idea into a scalable, production-ready product. I help startups, SaaS companies, agencies, and growing businesses build modern web and mobile applications that are fast, secure, scalable, and designed for long-term growth. Whether you're validating an MVP, launching a new SaaS platform, integrating AI into your business, or modernizing an existing application, I take ownership of the entire development lifecycle from product architecture and UI/UX implementation to backend engineering, cloud deployment, AI automation, and ongoing product evolution. I specialize in building AI-powered applications, SaaS platforms, marketplaces, customer portals, admin dashboards, CRM systems, B2B platforms, enterprise applications, internal business tools, mobile apps, workflow automation systems, and custom software for startups and established businesses. What I Build ✔ AI-Powered Web Applications ✔ AI Agents & AI Assistants ✔ Agentic AI Workflows ✔ AI Chatbots & Customer Support Systems ✔ OpenAI, ChatGPT & Claude Integrations ✔ RAG Applications & AI Knowledge Bases ✔ SaaS Platforms & Subscription Products ✔ Multi-Tenant SaaS Applications ✔ Startup MVPs ✔ Marketplace Platforms ✔ Customer Portals ✔ Admin Dashboards ✔ Analytics Dashboards ✔ CRM & ERP Systems ✔ Internal Business Tools ✔ Booking & Scheduling Platforms ✔ Real Estate Platforms (PropTech) ✔ FinTech Applications ✔ Healthcare & Telemedicine Platforms ✔ EdTech Platforms ✔ E-commerce Platforms ✔ FoodTech & Restaurant Systems ✔ Travel & Hospitality Platforms ✔ Logistics & Transportation Platforms ✔ Media & Entertainment Platforms ✔ Fitness & Wellness Applications ✔ Auction & Bidding Platforms ✔ Progressive Web Apps (PWA) ✔ Cross-Platform Mobile Apps Industries I Work With • SaaS • Healthcare • FinTech • EdTech • E-commerce • Real Estate • Travel • Entertainment • Fitness • Food Tech • Logistics • B2B Software • Startups • Enterprise Businesses Core Technologies Frontend React • Next.js • TypeScript • JavaScript • HTML5 • CSS3 • Tailwind CSS • Redux Toolkit • React Query • TanStack Query • React Hook Form • Framer Motion • Shadcn/UI • Vite Backend Node.js • Express.js • Python • FastAPI • REST APIs • GraphQL • tRPC • Authentication • OAuth • RBAC • Serverless Functions • Webhooks Database PostgreSQL • MongoDB • Supabase • Firebase • Prisma ORM • Redis • Database Design • Database Architecture AI & Automation OpenAI API • ChatGPT API • Claude API • LangChain • LangGraph • AI Agents • AI Automation • Prompt Engineering • RAG Systems • Workflow Automation • Make • n8n • Zapier • AI Personalization • AI Content Generation Cloud & DevOps AWS • GCP • Docker • Kubernetes • Terraform • Vercel • Cloudflare • GitHub Actions • CI/CD • Production Deployment Payments & Integrations Stripe • Stripe Billing • Stripe Checkout • Subscription Management • Payment Gateway Integration • HubSpot • Third-Party APIs • RESTful API Development Mobile React Native • Expo • Flutter • iOS • Android • Mobile-First Development Modern Development Tools Replit • Lovable • Bolt • Cursor • Git • GitHub • Figma to Code My Development Process I don't just write code, I help clients make the right technical decisions. Every project begins with understanding your business goals, users, and growth strategy. From there, I design scalable architecture, build clean and maintainable code, create intuitive user experiences, integrate AI where it adds real value, and deploy reliable applications that are ready for production. Whether your project requires a complete application from scratch, AI integration, a scalable backend, API development, workflow automation, cloud deployment, or performance optimization, I deliver solutions that are built to grow with your business. Why Clients Hire Me ✅ End-to-end Full Stack development ✅ AI-first product development ✅ Startup MVP to Enterprise solutions ✅ Business-focused problem solving ✅ Clean, scalable, maintainable code ✅ Modern UI/UX implementation ✅ Secure authentication & authorization ✅ High-performance database architecture ✅ API-first development ✅ Cloud-native deployment ✅ Clear communication ✅ Reliable delivery ✅ Long-term support and product scaling If you already have designs in Figma, an existing application that needs modernization, or simply an idea you'd like to turn into a successful product, I can help you build it from concept to launch. I'm available for both long-term partnerships and short-term projects involving Full Stack Development, React Development, Next.js Development, Node.js Development, AI Development, SaaS Development, Marketplace Development, Mobile App

Hi there 👋 I’m VAMSEE KRISHNA MADDIKUNTA, a SENIOR REACT NATIVE DEVELOPER with 8+ years of experience building robust, user-centric mobile applications for Android and iOS. I specialize in creating scalable, offline-ready apps with pixel-perfect UI and seamless performance. I’ve worked with startups and enterprises across diverse domains — delivering apps that are technically sound, optimized for branding, and built for real-world usage. 💡 WHAT I BRING TO THE TABLE ✅ REACT NATIVE EXPERTISE (CLI & EXPO) → Architected cross-platform apps with native-level performance, smooth navigation, and complex state management using Redux and Context API. → Experience with CodePush for OTA updates and App Center for CI/CD automation. ✅ UI/UX-FOCUSED DEVELOPMENT → Delivered pixel-perfect, responsive designs using React Native Paper, Native Base, and custom reusable components. → Passionate about app branding and visual identity for e-commerce and rewards platforms. ✅ ADVANCED FEATURE INTEGRATION → Push Notifications (Firebase, OneSignal), In-App Purchases, Deep Linking, QR/Barcode Scanning, Camera & Media Handling, GPS & Geofencing. → Multi-language and RTL support for global audiences. ✅ OFFLINE-FIRST ARCHITECTURE → Built apps with Realm DB, SQLite, and AsyncStorage to ensure seamless offline functionality and data sync. ✅ BACKEND COMMUNICATION & API INTEGRATION → Integrated RESTful APIs and GraphQL endpoints with secure authentication and dynamic JSON data flows. ✅ APP DEPLOYMENT & MAINTENANCE → End-to-end publishing on App Store & Play Store, version control, OTA updates, and CI/CD pipelines. ✅ TESTING & DEBUGGING → Strong testing skills with Jest and integration testing. → Debugged complex issues using Flipper, Reactotron, and native logs. ✅ THIRD-PARTY INTEGRATIONS → Integrated Razorpay, PineLabs, Stripe, Google Maps, AdMob, and more. 🌟 WHY CLIENTS CHOOSE ME ✨ PRODUCTION-GRADE DELIVERY – Built apps for retail, loyalty rewards, and enterprise platforms with real-world scalability. ✨ PERFORMANCE-DRIVEN – Optimized load times, reduced bundle size, and minimized re-renders using React.memo and useCallback. ✨ MODULAR ARCHITECTURE – Designed reusable components and clean architecture for maintainable codebases. ✨ END-TO-END OWNERSHIP – From wireframes to release and post-launch support, I manage the full app lifecycle. ✨ COLLABORATIVE MINDSET – Worked closely with UI/UX, QA, and backend teams in Agile/Scrum environments. 💼 HOW I CAN HELP YOU → BUILD YOUR MVP FROM SCRATCH – From design to deployment, I’ll help you launch fast and scale smart. → INTEGRATE ADVANCED FEATURES – Chat, Notifications, Payments, Maps, Surveys, and more. → OPTIMIZE EXISTING APPS – Refactor architecture, improve performance, and fix bugs. → SET UP CI/CD & OTA UPDATES – Automate deployments and streamline release cycles. ⚙️ TECH STACK MOBILE: React Native (CLI & Expo) | Redux | Redux Toolkit | Context API | TypeScript UI LIBRARIES: React Native Paper | Native Base | Tailwind CSS BACKEND: Node.js | REST APIs | GraphQL DATABASES: Realm DB | SQLite | AsyncStorage | MMKV INTEGRATIONS: Firebase | OneSignal | Razorpay | PineLabs | Google Maps | AdMob TESTING: Jest | Detox DEVOPS: App Center | Fastlane | CodePush ARCHITECTURE: MVVM | Clean Architecture | Component-Based Design VERSION CONTROL: Git | GitHub | Bitbucket 🌍 LET’S BUILD SOMETHING GREAT If you’re looking for a REACT NATIVE EXPERT who can deliver high-quality mobile apps with modern UI, offline support, and scalable architecture — I’d love to collaborate. 📞 FREE 30-MINUTE CONSULTATION – Let’s discuss your app idea, challenges, and how we can make it app-store ready. Let’s build an app that users love — fast, functional, and future-proof. BEST REGARDS, VAMSEE KRISHNA MADDIKUNTA Senior React Native Developer | Mobile App Engineer | ✅ KEYWORDS: React Native Developer | Mobile App Developer | Cross-Platform App Developer | Redux | Firebase | Razorpay | Realm DB | SQLite | CodePush | OTA Updates | App Store Deployment | Play Store Publishing | UI/UX | Offline Architecture | Modular Components | Startup MVP | E-Commerce App | Rewards App | Agile Developer

🕔 9,600+ hours of software development work at Upwork 🏆 Successfully completed over 55 projects with all 5 star rating from clients. ⏳ 15+ Years of Experience in Full stack development and Web Development Highly motivated Full-Stack developer with 15+ years of experience in building and maintaining scalable web applications. Strong understanding of software development principles and Agile methodologies. I have hands-on working experience in: ✔ PHP, Node.JS, Java, Spring Framework, Laravel, WordPress, Drupal, Ecommerce, CRM ✔ Angular, React HTML5/CSS3, Bootstrap ✔ MySQL, Microsoft SQL Server, PostgreSQL, InfluxDB, Memcache ✔ Github, Gitlab, CI/CD My core competency lies in building stable, maintainable and scalable web applications with modern technologies

🙋‍♂️ With over 10+ years of programming experience and more than 7+ years dedicated to Software Development and Information Technology, I have honed my expertise in a range of critical areas including Web and AI Application or Solution Development, Database Management, Server-Side Programming, and Software Management. 🧑‍💻 My approach to coding emphasizes maintainability and scalability throughout the entire software development lifecycle. When crafting web-based applications, I prioritize user experience as a paramount concern, ensuring that user interfaces are not only trendy and modern but also maintain a high level of professionalism. This dedication to user-centric design is where my proficiency in Front-End development shines, enabling me to deliver seamless and exceptional user experiences. On top of my expertise, I use Github Copilot , which makes my work crazy fast and smart, for quick client delivery. 🕵️‍♂️ Moreover, I specialize in efficiently managing data servers to ensure secure and smooth communication between the front-end application layer and the back-end layer, contributing to the overall robustness and reliability of software solutions. 🛎️ My Services 🔹 Small to Large Scale Web and AI application development from Scratch (N-Tier, Monolithic, Microservices) 🔹 AI application or solution development using Foundation Model (OpenAI API integrations, ChatGPT, DeepSeek or similar), text embedding, PineCone vector Database implementation for RAG (includes text and image training) or similar application. Custom AI chatbot, AI Agent or Knowledge-base development. Video tools using Veo 3, Sora, Kling AI or similar APIs. Go all Microsoft with Azure - OpenAI, AI Search, Vision AI, Custom Vision, Cosmos DB, Blob Container 🔹 Front-End Development using Vue.js (Vue 2 or Vue 3, HTML, CSS, ES6, TypeScript) 🔹 UI/UX or Prototype design using Figma 🔹 Figma design to Page development using HTML, CSS, JS or Vue.js 🔹 Responsive UI development for all screen sizes like desktop, mobile, tablet etc. (pixel perfect) 🔹 API integrations in the Front-End using AXIOS / Fetch or other. 🔹 Back-End API development using Node.js, Express.js, JWT for Security (Rest API) 🔹 Entire database development and management using MS SQL / MySQL / Firebase / Mongo 🔹 Automated / End-to-End Tests for any Website or API, using TestCafe (JavaScript framework) 🔹 Load / Stress test of API or Website using Octoperf, Kibana and Grafana 🔹 Any kind of Management System, E-Commerce, Social Media, or totally Custom Software Development. 🔹 Research and Develop any AI, particularly Machine Learning, based application or product 🔹 Data Visualization, Big Data analysis and Report generation from User or Business data 🔹 Deploying / Hosting web application using Amazon Web Services (AWS) or Custom 💼 Expert In 🔹 Front End: Vue 2 & 3, Nuxt, TypeScript, Axios, VUEX, Pinia, Bootstrap, Vuetify, Quasar, jQuery. 🔹 Back End / Server: Node.js, AWS (EC2, S3, Lambda), Express.js, GraphQL, CI/CD (Jenkins). 🔹 AI: OpenAI API integrations, ChatGPT, DeepSeek, Grok, Gemini or similar LLM usage, RAG operations, knowledge-base using PineCone vector database, AI chatbot or agent development. Azure - A. OpenAI, A. AI Search, A. Vision AI, Custom Vision, A. Cosmos DB, A. Blob Container 🔹 Database: MySQL, Firebase, MS SQL, PineCone (vector database) 🔹 Design Tools: Figma, Adobe XD, Adobe Photoshop, Adobe Illustrator. 🔹 Project Management Tool: Bitbucket, GitHub, Jira, Azure DevOps, MS Teams, Trello. 🔹 Other: ChatGPT or any LLM, Knowledge Base, NLP, Artificial-Intelligence based web application development. 🎓 Education 🔹 Master's Degree in Computer & Electrical Engineering, Canada. (2 yrs) 🔹 Bachelor's Degree in Computer Science & Engineering, Bangladesh. (4 yrs) Feel free to ping 👋 me on Upwork to discuss ideas. I am sure I can help you out with a Software Solution. If it doesn't match up, we can always go our own directions.

If you are looking for a reliable and innovative Full Stack Web developer, I am happy to help you with my web development skills to achieve your business and technology goals. My core strengths are in building user-centric and scalable web applications with the most popular stack - ReactJs, Angular, Svelte, NextJs, Node.js, Three.js, Express.js, HTML, CSS, Firebase and REST API. Integration, SaaS, and Automation are the most desirable functions for any business application and I am fortunate to have good experience in these areas as well as Zapier, Payment Gateways (Paypal, Stripe), SMS platforms (Twilio, Plivo), Customer Support (Zendesk) and developing cloud functions in AWS and GCP for various automation needs. My Key Skills are the following: Frontend ○ Angular ○ React ○ NextJs ○ Vite ○ HTML, CSS, JAVASCRIPT, TYPESCRIPT ○ Three.js ○ Tinymce ○ Tailwind CSS ○ Jquery ○ Firebase (Auth, Firestore, Realtime Database, Functions, Storage, Cloud Messaging FCM, Dynamic Links, Crashlytics, Hosting) ○ PWA ○ Polotno SDK ○ NuxtJS ○ Dynamic Form Builder ○ Localization using i18next Backend ○ NodeJS ○ ExpressJS Database ○ Firestore ○ Mysql ○ Sqllite ○ MongoDB ○ Postgresql Google Cloud ○ Cloud Task, Cloud Run, Cloud Functions ○ Cloud Scheduler ○ Cloud Deploy, Cloud Build, Cloud Repository ○ Cloud Storage ○ Cloud SQL Amazon Web Services (AWS) ○ Amazon S3 ○ EC2 ○ CloudFront ○ Amazon Route 53 ○ amazon rds AI Integration ○ Ai models (chatGpt , Gemini , claude ai , Llama ) ○ Vector DataBases (PineCone, chroma Db) ○ Hungging face model integrations ○ Ai Chat Bot Creations 🔰 API Integrations: ○ Google Sheet, Google Drive, Gmail ○ Google App Script ○ Shopify ○ Plaid API Integration ○ SMTP (Nodemailer) ○ Plivo ○ Zendesk ○ eFax ○ Quickbase ○ Payment Integrations - Stripe, Paypal, Recurly ○ OAuth2 Integration ○ Ffmpeg ○ Puppeteer (Web Automation) ○ Social Auth (Google, Facebook, Github, LinkedIn, Microsoft, Twitter) ○ Phone Number Authentication Server Management ○ Web Hosting ○ Ngnix ○ Letsencrypt During my tenure of 5+ years as a developer, I have helped many clients build their business applications from scratch which include Corporate Websites, Online Stores and Custom applications / PWA for HealthCare communication, Utilities job management, Product Label Design & Printing, Affiliates Commission Tracking, Real Estate Lease management, Business Funding Application and the list keeps going. I can also develop Desktop apps using Electron JS. Let’s have a quick chat to discuss your ambitious project and I’ll leave no stone unturned to make it a reality. Thanks

🚨 Your website should help you win clients, not lose them. I help businesses build fast, modern, and conversion-focused websites that look great, perform well, and support real growth. With 7+ years of experience, I work with startups, agencies, and business owners who need reliable development across WordPress, WooCommerce, Squarespace, Wix, React, and Framer. Whether you need a new website, a redesign, an online store, or a custom front-end experience, I focus on clean execution, strong communication, and results that make sense for your business. 𝗪𝗵𝗮𝘁 𝗰𝗮𝗻 𝗜 𝗵𝗲𝗹𝗽 𝘆𝗼𝘂 𝘄𝗶𝘁𝗵: • WordPress website development and customization. • WooCommerce stores, fixes, and enhancements. • Squarespace website design and updates. • Wix website setup, redesign, and maintenance. • React-based front-end features and custom builds. • Framer websites and landing pages. • SaaS landing pages and marketing websites. • Figma to website conversion. • Speed optimization and technical improvements. • Theme, plugin, and layout troubleshooting. • Ongoing website support and maintenance. 𝗠𝘆 𝗳𝗼𝗰𝘂𝘀 I build websites that are: • Fast. • Mobile responsive. • Easy to manage. • SEO-friendly. Designed to convert visitors into customers. 𝗧𝗲𝗰𝗵 𝘀𝘁𝗮𝗰𝗸 • WordPress. • WooCommerce. • Squarespace. • Wix. • React. • Framer. • HTML, CSS, JavaScript. • Elementor. • SEO and performance optimization. Clients hire me when they want someone who can handle both the technical and visual side of a project without overcomplicating it. I care about clean work, clear communication, and delivering something you can confidently launch. If you need a developer who can improve your current website or build a new one from scratch, I can help. Tom.

Startup developer with 12 years of experience, hundreds of projects, and $60M raised. I write code, build architecture, manage people, participate in UX and product design, and research competitors. CTO, Developer, UX Designer, Product Designer, Senior (Principal) Engineer, problem solver, PM, playboy, and billionaire 😂 Like Tony Stark, but a bit cooler. Come with an idea and money — I’ll handle the rest. In a startup, a reliable technical partner is crucial. Believe me, I’ve seen many startups go bankrupt because of foolish people burning through the budget. I know more about your idea than you do. Technical execution is on me — the rest depends on you. Contact. === Available for US, Canada, Europe, and worldwide projects. Digital nomad with flexible working hours across time zones. Portfolio and CV in the first portfolio item below "Portfolio, Info, CV". Keywords: React, Next.js, JavaScript, TypeScript, Node.js, Full-stack developer, Frontend developer, Web development, Senior developer, 12 years experience, 200+ projects, Top 0.5% Upwork, $60M+ raised, Startup specialist, MVP development, SaaS development, AI integration, UI/UX design, API development, Mobile development, Cross-platform, Cloud development, React Native, Angular, Vue, Nuxt.js, Remix, Astro, Gatsby, Svelte, Redux, Zustand, Mobx, Recoil, Context API, React Query, HTML5, CSS3, SASS/SCSS, PostCSS, WebSocket, Socket.io, WebRTC, SSG, SSR, ESLint, Husky, Zod, Yup, react-hook-form, Formik, Monorepo, pnpm, Nest.js, Fastify, AWS, Google Cloud, Azure, Supabase, MongoDB, PostgreSQL, TypeORM, Prisma, RabbitMQ, REST, GraphQL, Apollo, Express, Axios, Stripe, Hubspot, Cloud APIs, Tailwind CSS, ShadCN, Radix UI, Material UI, MUI, MUI X, Magic UI, Bootstrap, Ant Design, Chakra UI, Mantine, Storybook, Design Systems, Figma in Code, Code in Figma, NativeBase, React Native Paper, React Native Elements, Ionic, Electron, GlueStack, Vite, Webpack, Gulp, Rollup, Turbopack, Vercel, Netlify, Heroku, Strapi, Contentful, Sanity, Storyblok, GraphCMS, Netlify CMS, OpenAI, ChatGPT, Replit, Cursor AI, Lovable, Vercel v0, Figma to Code, make.com, n8n, Custom web applications, E-commerce development, Dashboard development, Data visualization, Performance optimization, Code refactoring, Technical consulting, Fractional CTO, FinTech, HealthTech, EdTech, GovTech, E-commerce, Real estate, Travel, Entertainment, React Next.js developer for hire, Senior full-stack JavaScript engineer, Startup MVP development expert, AI-powered web application developer, Custom SaaS platform development, Enterprise web application developer, Cross-platform mobile app developer, UI/UX design and development, API integration specialist, Cloud architecture consultant, Hire React developer, Web development services, Custom software development, Rapid prototyping, Technical consulting, Code review, Performance optimization, Scalable architecture, Responsive design, Mobile-first development, Remote developer, US Canada Europe, Worldwide available, Digital nomad, Flexible hours, Time zone flexible, Fast delivery, Cost-effective, Direct communication, No intermediaries, Quality guaranteed, Deadline compliance, Proven track record, Client-focused

Vietnamese | Java Spring Boot | MQL5 | 4 Years Experienced I’m a Java developer for enterprise e-Invoice systems, and algorithmic trading developer specializing in MT4/MT5 EAs and indicators. ✅ Services I offer: ✔️ Java Spring Boot ✔️ MQL4, MQL5 ✔️ Strategy conversion: Pine ⇄ MQL ⇄ LUA ✔️Trade automation via Telegram / API / custom logic Let’s automate your strategy efficiently and reliably. --Please don't hesitate to contact me. I am here to assist you.--

Specializing in financial modelling, quantitative analysis, trading, and operations with over 10 years of experience in securities market investments. CFA Certification. My additional areas of expertise include mandarin translation, web scrapping, automations, tutoring, and data analysis. Below is a brief summary of my technical skills: 🐍 Python: - Data Analysis and Visualization - Web Scrapping - Generative AI - Machine Learning and Deep Learning 📝 Financial Modelling and Quantitative Analysis: - Risk Management - Options Pricing - Portfolio Analysis 💹 Trading: - Algorithm Development - MT4, TradingView (Pine Script), IG - Screening and Back-testing 🪄 Automations: - Multi-Processing - Google Sheets - Scheduling - Document Manipulation - Email Automation 📈Excel and Google Sheets: - Complex Formula Calculations - Table and Graph Organization - Optimization - Statistical Modelling - VBA - App Script 🔍 SQL (MySQL, Microsoft SQL Server): - Data Querying - Functions and Keys - Relationship Management 📊 Power BI: - Data Import and Transformation - DAX Calculations - Relationship Modelling - Data Visualization