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👋 Hello, I’m Sanjeev. With 13+ years of experience, I help startups and established companies build reliable, fast, and user-friendly CRMs, enterprise solutions, and e-commerce platforms. 💻 Front-End Expertise Angular, React, Vue & Ember.js → portals, dashboards, and CRMs ⚙️ Back-End Systems Laravel, Node.js, Ruby on Rails, PHP 🏢 CRM Solutions Workflow automation, Client portals, Custom CRMs 🛒 E-Commerce Solutions Custom builds for WordPress, Shopify, and Magento 🤖 Automation & Integrations Third-party integrations, Chatbots, Reporting systems ✨ Why Clients Choose Me ✅ 165+ successfully completed projects ✅ 13,500+ Upwork hours ✅ 100% Job Success ✅ Top Rated Plus Long-term trust, reliable updates, and transparent communication 💬 What Clients Say “Provided a good solution ahead of schedule.” “One of the best independent contractors I’ve ever dealt with—a superb communicator and coder.” “Knowledgeable Ember.js developer, consistently delivers.” 👉 Please get in touch with me or schedule a meeting to talk about your project if you're searching for a trustworthy developer to realize your ideas. #FullStackDeveloper #Angular #EmberJS #Laravel #NodeJS #RubyOnRails #CRMDevelopment #EcommerceDevelopment #Shopify #Magento #WordPress #AIAssistedDevelopment #WebDevelopment #EnterpriseSolutions #APIIntegration #Automation - Ember.js Developers & Programmers - CRM Developers - E-commerce Developers - Drupal Developers - Adobe Commerce (Magento) Developers - Drupal Developers

Hello! I'm an AI engineer, full-stack iOS/Android/PHP/JavaScript/TypeScript/React/React Native developer and problem solver with more than 17 years of experience. Specializing in MERN and LAMP stacks, artificial intelligence (AI) and AI agents. I embrace modern AI-powered development workflows using tools like 🤖 Claude Code, 🧠 Cursor, 🏄 Windsurf IDEs and 🌀 Codex. What I do: 📱 Mobile apps, 🖥️ Desktop apps, 🌐 Websites, ⚙️ Web services, 👨🏻‍💻 Admin Backends, 🧩 API for them, 🤖 AI agents and ChatGPT/Claude integrations. 🚀 My own products: I don't only build for clients — I have three apps live on the App Store, each shipped end to end alone, from idea to release, and kept running. 🕰️ Insight Countdown is a countdown app for iPhone, iPad and Mac: SwiftUI, SwiftData, private iCloud sync, widgets, and an alarm that rings through silent mode and Focus. 📶 WiFi QR Studio turns a network into a print-ready, frameable card laid out at exact physical size. 🔠 See Text puts the texts you keep being asked for on your device's full screen in large type or as a QR code, or copies them to the clipboard — license plate number, phone number, email, booking reference, etc. All three have multilingual marketing sites in Astro and Tailwind. So when I estimate your project, I'm estimating work I've done for myself — store review, crash reports, support and updates included. 🤖 AI agents: I've shipped an AI agent handling inbound marketplace leads for live paying customers. It acts on an external event with nobody pressing anything, takes real actions in the world (replies to a person in chat, sends SMS, starts a phone call), follows up hours and days later, keeps conversation state and changes its own later behaviour from what it reads. What separates that from a demo is predictability, and that's where the engineering goes: making bad output structurally impossible to send rather than asking the model nicely, idempotent delivery so a retry can't message someone eleven times, and switches that fail toward the safe side. Kinds of software I've created: 🛍️ Shopping & online stores, 🏃 Sports, 🎮 Games, 🧘 Medicine & well-being, ✈️ Travel, 💰 Bank systems, 📣 Ad networks, 🛡️ Insurance, 🛬 Landings. I have strong skills in the following programming languages: 📜 TypeScript, ☕ JavaScript, 🦅 Swift, 🎯 Objective-C, 🐘 PHP, 🐱 Kotlin, ☕ Java. Frameworks and technologies: 🦕 Deno & Node, ⚛️ React, ⚛️ React Native, 🤖 ChatGPT API, 🔮 Anthropic AI API, 🌟 Google Gemini API, 🅰 Astro, ⚡️ Vite, 🐻 Zustand, ⚛️ Electron, 🆁 Redux, 🆁 Redux Toolkit, 🐆 Nest js, 🅽 Next js, 🆅 Vue, 🐆 Fastify, 🥤 Fresh, 🅰 Apollo GraphQL Client and Server, 🔌 Relay, 🅼 MobX, 🌳 Koa, 🅴 Express js, 📈 GraphQL, 😎 Swagger, 💨 Tailwind, 🦅 SwiftUI, 💾 SwiftData, ☁️ CloudKit, ⏰ AlarmKit, 🧩 WidgetKit, 🎥 Lottie Files, 🥤 Cocoa Touch, 🥥 Cocos2D, 🅻 Laravel, 🎵 Symfony, 🆈 YII and YII2, 🔥 CodeIgnitor, 🆉 Zend Framework, 📍 CoreLocation, 🎥 CoreAnimation, 🏠 Apple HomeKit, ❤️ Apple HealthKit, 💰 Superwall, 💳 Stripe, ☎️ Twilio. Databases: 🍃 Mongo, 🐬 MySQL, 🪶 SQLite, 🍉 Watermelon DB, ⚡️ Supabase, 🔥 Firebase, 🐘 Postgres, 📄 TypeORM, ➡️ Doctrine, ⚪ DynamoDB/PartiQL, 🔴 Oracle, 🅲 CoreData, 🟣 Realm. I design the schemas too — relational and NoSQL, with indexing and query performance in mind. Cloud Computing: 🔺 AWS (Lambda, DynamoDB, SQS, EventBridge, S3, CloudFront, EC2), 🌥️ Google Cloud Platform, 🐳 Docker, ☸️ Kubernetes, ☸️ Google Kubernetes Engine, 🌊 DigitalOcean, 🅷 Heroku, 🆁 Render, ☀️ Netlify, ▲ Vercel, 🟠 Cloudflare, 🅰 Microsoft Azure. Serverless and edge functions, plus deployment and hosting on about half my projects. I have developed over 20 iOS apps, 15 React Native apps, several Android apps, APIs for some of them, over 20 websites, and shipped my own products to the App Store. I'm proficient in problem-solving, with a solid track record of fixing complex problems teams had struggled with on their own — usually performance issues or hard-to-track bugs. How I work: ⚡ I reply fast and I'm easy to reach — quick responses are what clients mention most. 🕒 Based in Europe: in sync with European clients, day shifted later for US ones, and I've worked across Asian time zones too. 🎯 I work autonomously: give me the goal and I'll plan it, ask what actually matters, and keep you posted. 💡 I don't just execute tickets — I treat your project as my own and tell you when I see a better way. 🧵 I've worked in around 15 teams, and can also deliver an app, API or server entirely on my own, turnkey. Languages: 🇬🇧 English C1, 🇷🇺 Russian and 🇧🇾 Belarusian native, 🇵🇱 Polish B1. I like to explore new technologies and build software of any complexity. I follow best practices, test thoroughly, and write clean, readable code any other developer can maintain.

Charlie Maere is a seasoned Information Technology expert with over 18 years of senior-level experience. He currently serves as the Global Digital Health and Data Analytics Director at the Elizabeth Glaser Pediatric AIDS Foundation. His areas of expertise span across multiple domains, including: Project Management Software Development, with proficiency in: Languages & Frameworks: Python, PHP, Angular, Ionic, Java, C++, Swift, C, C#, Ruby on Rails, JavaScript, Android, Flutter, React, Vuejs, nodejs. Hybrid/Mobile App Development Web Development Artificial Intelligence and Computer Vision, including: Retrieval-Augmented Generation (RAG) Large Language Models (LLMs) Computer Vision Predictive Modeling Classical Machine Learning Algorithms Firmware Development Cloud Computing, with experience in: AWS (Amazon Web Services) Microsoft Azure Systems Administration and Cybersecurity Strategic and Operational Planning Organizational Design and Scalable Network Architecture Information Systems and Machine Learning Collaborative Tools and ICT System Development Charlie’s work is driven by a passion for innovation and digital transformation, particularly in strengthening ICT infrastructure and data-driven solutions within global health and development ecosystems.

Hi, I'm Anatoly 👋 I help Fintech companies ( $3m+ ARR) to make more money by automating processes with AI and software. Over last 20+ years I helped enterprises (such as Red Hat and Telus), governments (Government Jamaica, Canada) and startups that did to over $1b (such as Charitable Impact). Here are some quick highlights: → Automated presentation-to-sales motion for Ceramics Company: saves 100h/m, generated extra $20k/m → Built Charitable SaaS platform that did $1.8 billion in transactions → Set up CRM for the Government of Jamaica that increased productivity by 200% ———— I am really good in these 2 things: 1) building software 2) scaling and automating businesses. It is very rare that you can find someone who has both business sense and deep technical knowledge. From a business side: I have scaled and sold two of my own businesses, so I deeply understand the process. If you are looking for someone who would understand your business, and help you to prioritize best solutions, as well as build these solutions for you - I am your guy! If you are wondering what tools and frameworks I use, here is a list (non-exhaustive by any means): n8n, Claude Agents, Antigravity, Make, Ruby on Rails, Next.JS, React, Supabase, Vercel, Scrum, Kanban, Python, Github.

🏆 Top Rated Freelancer with 100% Job Success Rate 🟢 5,400+ Hours Tracked | 190+ Completed Projects | 15+ Years Experience Looking to build a high-performing web application, integrate cutting-edge AI capabilities into your platform, or optimize your existing WordPress or Rails architecture? You’ve come to the right place. I am a Senior Web Engineer specializing in Ruby on Rails, WordPress, and AI API Integrations. I help businesses transform complex technical requirements into scalable, secure, and user-friendly web applications. 🤖 AI INTEGRATION & MODERN WEB SOLUTIONS 1. AI API Integrations: Connecting OpenAI, Claude, and Gemini APIs into custom web apps for automated workflows, intelligent search, and AI-driven features. 2. Ruby on Rails Development: Building scalable backend systems, custom APIs, third-party integrations, and maintaining legacy Rails codebases. 3. WordPress Engineering: Custom theme & plugin development, headless WordPress setups, speed optimization (Core Web Vitals), and advanced security hardens. 4. Full-Stack Ecosystem: Leveraging Django, Laravel, Cypress testing, and modern frontend tools to deliver end-to-end solutions. 💡 WHY CLIENTS CHOOSE TO WORK WITH ME: 1. Proven Track Record: Over 5,400 tracked hours on Upwork with consistent 5-star client reviews. 2. Security & Reliability: Dedicated IP address for safe access control and high-standard code security practices. 3. Full Lifecycle Support: Free support included after project completion to ensure long-term peace of mind. 4. High Availability: Full-time dedicated freelancer with clear, prompt, and proactive communication. 🛠 CORE TECHNICAL SKILLS: 1. Backend & Frameworks: Ruby on Rails, WordPress (Custom Plugins/Themes), Django, Laravel, PHP, Python. 2. AI & APIs: OpenAI API, Claude API, Gemini API, RESTful APIs, Webhooks. 3. Frontend & Design: HTML5, CSS3, JavaScript, Elementor, Divi, Figma, Adobe XD. 4. Database & DevOps: MySQL, PostgreSQL, Git, Cypress E2E Testing. 📬 Ready to bring your project to the next level? Click the "Invite to Job" or "Hire" button on the top right, and let’s discuss how I can help solve your technical challenges today!

Have been using Ruby on Rails since 2010, PHP since 2004, and jQuery since 2006. I use MySQL, PostgreSQL, and MongoDB in various projects. I manage a VPS server for personal websites and demo web applications. I am proficient with Ubuntu Server and currently using Linux Mint in my main laptop. My core competency is in the backend side of the application, the business process, and the javascript part of the app to enhance user experience. I will use any themes and designs that have been provided or purchased, as long as it has been in HTML & CSS format, ready to be integrated into the application. Right now, I prefer to use the Ruby on Rails framework rather than other frameworks. Most of my RoR work is to continue existing projects and here I found the real benefits of this framework. As long as the previous developer follows the RoR convention, it will be easier for another developer to pick up where he left off and continue the work. That's why I love using this framework.