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✅ ABOUT ME: I am a Professional Full Time Freelancer. I have 8+ years of experience working on Windows/Linux server administration, CICD Devops ,AWS, Azure, windows/Linux troubleshooting, HyperV, proxmox servers, DNS records mapping, IIS, Domains and DNS records management, active directory, web server, webhosting, databases administrations and Mail server implementations, administrations for the mail services MS Office365, Gsuite, Zimbara and postfix . ✅ WHY ME? • Full-time Professional – I work on Upwork as a full-time freelancer. I take every project seriously and I am highly professional. • Highly responsive – I’ll always get back to you in less than 02 hours. • 100% Client satisfaction – I provide revisions and modifications even after our contract ends. • I provide accurate solutions and just as important, I can guide you to future prospects and put your project on the right track. • Good communication skills – You will find me very friendly to talk to. ========================================= #Windows Servers - clients #Linux Server - clients #Web servers - IIS, Apache, XAMPP, Nginx and Tomcat #Database Servers - MSSQL, ORACLE, MYSQL, MongoDB #Webhosting tools- Plesk, cPanel and CWP #Cloud services providers - AWS, Azure, GCP, Digital Ocean, World stream, OVH Cloud, Hetzner and Hosting raja #Hosting providers - Hostinger, Bluehost, Namecheap, Godaddy, Bigrock and Hostgator #Active Directory - setup, users creation, Centralized Management, policy creation and enhanced Security #Troubleshooting - L1, L2 Tools used ============== Github, SVN IIS,Apache,Tomcat,Nginx , Apache Kafka and Wordpress SSH, RDP, VNC, Anydesk, Splashtop and screen connect Mobaxterm,Toad,SSMS and Workbench Plesk,WHM,Cpanel Active Directory, IAM Servicenow, Redmine, Microsoft Teams and Slack Previous Clients Feedback: 1- "Karthik was an exceptional Upworker to deal with. He was responsive, communicative, knowledgeable and proactive at solving my urgent technical issue (my businesses website was down for an unknown reason) and I wouldn't hesitate to recommend him to anyone else seeking an excellent technical support specialist. Thank you Karthik!" 2- "Karthik went above and beyond to progress with a very difficult issue in a very short period of time. He is kind, hard-working, and knowledgeable." 3- "I recently had the pleasure of working with "Karthik Raja" on installing PMB Software project, and I must say it was an outstanding experience from start to finish. I highly recommend "Karthik Raja" to anyone seeking top-notch freelancing services." 4- "he provides ideas to solve our problems he is a best gem have ever met. He focused only in customer satisfaction. no negative reviews." So why wait? Just invite me to your job on Upwork so we can discuss how to make your project a success. Let’s work together and get it done!! Thanks, Karthik

Hi, I'm the highest-rated in JS frameworks, self-motivated developer on UpWork carrying a "Top Rated" badge, a 5 ⭐ rating, and plenty of reviews to back it up. I have 8+ years of experience in web/website development. Skills: ✅ React ✅ Next.js ✅ Svelte/Svelte5 ✅ SvelteKit ✅ Node.js ✅ MongoDB ✅ MySQL ✅ GraphQL ✅ Typescript ✅ Supabase ✅ Figma/XD to web pages Soft skills: ✅ Flexible ✅ Quick learner ✅ Attention to details ✅ Good communication ✅ Good team member ✅ Working with deadlines ✅ Familiar with Git, GitHub, Bitbucket ✅ Familiar with Jira and Scrum meeting ✅ Familiar with Slack, Skype, and Zoom My specific expertise lies in Frontend, Migrations, Speed Optimisation, Responsive Design (Mobile-ready), and UX / UI Design. Hands-on ReactJs, NextJs, Svelte/SvelteKit, NodeJs, Typescript, Supabase, HTML, CSS, SCSS, Figma, Tailwind, Bulma.

I am Gokul Vyas (@Gokul_Vet_Art), a Medical-veterinary-focused scientific illustrator specializing in anatomy-based medical visuals, educational diagrams, and interactive SVG vector systems. My work combines veterinary knowledge with professional digital illustration to create accurate, clean, and production-ready visuals for textbooks, educational platforms, presentations, research content, and pet-health software applications. I specialize in: • Human as well as Veterinary anatomy illustrations • Medical & surgical diagrams • Scientific and educational graphics • Interactive SVG anatomy systems • Breed-specific animal illustrations • Developer-ready vector assets for apps and UI integration Unlike generic illustrators, I work with strong anatomical understanding and structured vector workflows, allowing me to create illustrations that are not only visually clear, but also scientifically reliable and technically usable. Recent work includes interactive breed-accurate SVG anatomy illustrations designed for integration into a live pet-health software prototype, with organized vector structures and region-based interaction workflows. Tools & workflow: • Affinity Designer 2 (Vector Workflow) • High-resolution vector exports • SVG / PNG / PDF delivery • Clean layer organization & scalable assets • Detail-oriented anatomy construction I focus on professional communication, accurate execution, and long-term collaboration. If you need veterinary or medical visuals that balance scientific accuracy with polished presentation, I’d be glad to help..

I am an experienced web and software developer specialising in React, Node.js, MySQL, and Python, with additional expertise in React-native/Expo/Flutter for cross-platform development. I have hands-on experience building distributed systems, machine learning applications, and scalable web platforms. Over time, I’ve developed a strong focus on delivering high-quality, reliable solutions that meet both technical requirements and business goals. I pride myself on fast delivery, clear communication, and offering revisions to ensure every project exceeds expectations. Let’s collaborate to bring your ideas to life with solid, professional results!

I have 10+ years of experience in web app development. I have 6+ years experience in React/Next and Svelte/SvelteKit. My Focus is to learn new things around my skills and make my client 100% satisfied with my work. Skills: ✅ react.js ✅ next.js ✅ Svelte ✅ SvelteKit ✅ Micro Frontend ✅ node.js ✅ MongoDB ✅ MySQL ✅ GraphQL ✅ Typescript ✅ Supabase ✅ Firebase ✅ Figma/XD to web page Soft skills: ✅ Flexible ✅ Quick learner ✅ Attention to details ✅ Good communication ✅ Good team member ✅ Working with deadlines ✅ Familiar with Git, GitHub, Bitbucket ✅ Familiar with Jira and Scrum meeting ✅ Familiar with Slack, Skype, Discord and Zoom My expertise in Frontend, Migrations, Speed Optimisation, Responsive Design (Mobile-ready), and UX / UI Design. Hands-on react.js, next.js, Svelte/SvelteKit, NodeJs, Typescript, Supabase, chart.js, Fabric.js, HTML, CSS, SCSS, Figma, Figma to HTML/Web, Tailwind, Bulma.

Full-Stack AI Engineer who ships production AI voice agents, AI agents, and scalable web apps end to end. I built Fonazo, a live AI voice agent that answers business calls and books appointments, and scaled Satlantis solo from zero to 300,000+ users. Today I build AI-powered CRM agents at Chirp on Mastra and LangGraph. 100% Job Success on Upwork across 15+ delivered projects, every one 5 stars. I own the whole thing: the voice pipeline, the agent, the API, the database, and the polished frontend on top. WHAT I BUILD • AI voice agents on a real-time Python pipeline (Pipecat, VAD, streaming speech-to-text and text-to-speech, and any LLM: OpenAI, Anthropic, Groq). I built Fonazo, a production AI voice agent that answers calls, books appointments, qualifies leads, and updates the CRM live in 40+ languages, plus Call Assist, an AI receptionist with sub-second turn-taking over Twilio and Deepgram. • AI agents and workflow automation with Mastra, LangGraph, the Vercel AI SDK, function calling, and RAG on PostgreSQL and Redis. At Chirp this cut manual workflow execution time by 60% across customer accounts. • SvelteKit and Next.js web apps built to ship and hold up in production. I scaled Satlantis to 300k+ users at 99.9% uptime and cut load time 30% with SSR and Go caching layers. • Real-time systems: WebRTC and WebSocket audio/video, live chat, and presence. I built a full Discord clone with LiveKit calls and sub-200ms messaging. • Go backends and developer tools: REST and tRPC APIs, queue-based job runners, OAuth2 auth servers, plus a language interpreter and a Git-like version control system written from scratch in Go. STACK Voice AI: Python, Pipecat, VAD, streaming STT and TTS (Deepgram, ElevenLabs, Cartesia), Twilio and telephony, any LLM AI and agents: Mastra, LangGraph, LangChain, Vercel AI SDK, RAG, pgvector, function calling, OpenAI, Anthropic, Groq Frontend: SvelteKit, Svelte, Next.js, React, TypeScript, Tailwind CSS, Astro, shadcn/ui Backend: Node.js, NestJS, Go (Chi), FastAPI, tRPC, GraphQL, REST, gRPC Real-time and media: WebSockets, WebRTC, SocketIO, LiveKit, Twilio Data: PostgreSQL, MySQL, MongoDB, Redis, Supabase, Firebase Infra: Docker, AWS, GitHub Actions, CI/CD, Cloudflare, Nginx WHERE I FIT BEST • You want an AI agent or voice agent built for real users, not a demo • You have a SvelteKit or Next.js app that needs to ship or scale • You need real-time features (calls, live chat, collaboration) done properly • You want one engineer who takes an idea to production across the whole stack Tell me what you are building and the outcome you need. I reply within hours and I will tell you straight whether I am the right fit.