Hire the Best Tortoise SVN Specialists
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With 6 years of real-world software development experience and 4 years of advanced mathematics studies, I have honed my skills across various languages, fields, and technologies. My expertise includes Agile methodologies, ensuring efficient and high-quality project delivery. I specialize in: Application Development: 🌐Web: React, Next.js, Svelte, JavaScript, TypeScript 📱Mobile: Android (Kotlin), Flutter, React Native 🖥️Desktop: Flutter, Electron UI/UX Design, Server-Side Development: Backend Languages: Node.js, Python, PHP, Go, Bash Services: REST APIs, Realtime servers, Microservices, Automation, CLI tools Database: MySQL, MongoDB, PostgreSQL, MS Access, Redis, Firestore, Supabase, SQLite Additional Skills: API Integration, Docker, AI Integration, Script Writing, Lead Generation, Data Analysis, Cloud Management, OAuth, GraphQL, gRPC, WebSockets, WebRTC I excel in: •Error handling •Designing and implementing robust models and APIs •Logging and monitoring •Applying design patterns and best practices •Comprehensive testing •Writing thorough documentation I am committed to delivering professional, high-quality software solutions tailored to your needs. With a vast arsenal of skills, I am ready to build an exceptional product for you. Let's bring your vision to life!

Hi, I'm Salim. Most of what I do these days is AI — adding LLM features, agents, MCP servers and RAG to real products, and building the full app around them. When you hire me you're working directly with the person writing the code; I lead a small senior team of three at SR Web Studio. People usually come to me when they need: • An AI feature added to an existing product • A SaaS MVP built from scratch • A cross-platform mobile app • A tricky integration or some API automation • A Swoogo integration, sync tool, or custom event page built out • A slow or ageing codebase cleaned up and modernised I've spent 6+ years building full-stack JavaScript/TypeScript products — freelancing, in full-time remote roles, and running SRWS. My last two long engagements, RebelsLab (Netherlands) and Zephyr Events (Spain), hired us as their embedded remote team, working like their in-house developers on a fixed monthly basis. At Zephyr, an events company, a lot of that work was built around Swoogo — I built the dashboard their clients use to manage Swoogo event integrations, connected Swoogo to third-party APIs, payments, bulk email, PWA/push and WhatsApp, delivered standalone sync tools for clients who didn't need the full dashboard, and extended Swoogo event pages with custom JavaScript for features beyond Swoogo's defaults. Through work like that we've delivered for clients like Intuit, University of Wollongong, ACU and others. I'm not tied to any one stack — a solid grasp of the fundamentals plus an AI-augmented workflow means picking up a new framework or language isn't really a barrier. I'll work in whatever you already use and deploy to your own infrastructure, whether serverless or a VPS you control. What I care about is clean, maintainable code and honest communication the whole way through. What I work with: • AI and LLM — LLM API integration (Anthropic, Gemini, OpenAI, Cloudflare Workers AI), AI chatbots and agents, prompt engineering, AI-assisted automation, adding AI features to existing products • Frontend — React, Next.js, Vue, Nuxt, Svelte, SvelteKit (whichever your project uses); TypeScript, Tailwind CSS, responsive accessible UI • Backend and APIs — Node.js, NestJS, Hono, Express; REST and GraphQL APIs, auth, webhooks, background jobs • Mobile and Desktop — Cross-platform apps with Capacitor (one web codebase across iOS, Android, desktop); open to React Native, Tauri, or Electron as the project needs • Cloud and Deployment — Serverless (Cloudflare Workers, D1, R2, Queues) or a traditional VPS on AWS, DigitalOcean, or your own server; Docker, Nginx, CI/CD, GitHub Actions • Databases — PostgreSQL, MySQL, MongoDB, SQLite • Event tech — Swoogo: custom event pages, API integrations, standalone sync tools, and client-facing dashboards for managing Swoogo events • Integrations — Stripe, Twilio, SendGrid, Google/Apple Wallet, Google Maps and Places When the choice is mine, my personal toolkit is SvelteKit, NestJS, Hono, Tailwind, and Capacitor. If you have an idea or a project in mind and aren't sure where to start, feel free to message me — I'm happy to talk it through and see how I can help.

I build modern, high-performance web and mobile applications with a strong focus on AI-powered products, exceptional user experience, and scalable architecture. I help startups and businesses turn ideas into production-ready applications using modern technologies and AI-assisted development workflows. What I work with • React, Next.js, Svelte, SvelteKit • React Native (iOS & Android) • AI Application Development • OpenAI, Claude, Gemini & LLM Integration • AI Agents & MCP Integration • Cursor, Claude Code, Windsurf & AI-assisted Development • Tailwind CSS, shadcn/ui • SaaS Platforms & Enterprise Dashboards • Performance Optimization, SEO & Accessibility • Clean, maintainable and scalable code I'm passionate about building fast, modern applications that combine great design with the latest AI technologies. Let's build something amazing together.

TOP RATED PLUS Software engineer I am used to working with high-velocity agile teams and embracing DevOps culture. As a remote software engineer, I got early success in upwork by working at VertikalRMS. I have contributed immensely to improving their SAAS products and team culture. I am currently breaking monolith to microservice with scalability in mind and creating new services for different applications. In the past, I have worked full time in my startup to disrupt Agri-analytics using a fleet of drones for three years. Also did noteworthy contributions to 10+ open source projects mostly on could native space. I provide clean, tested, documented, and scalable projects and contribute to architecture and design decisions. Noteworthy Projects I've worked on: 1. VetikalRMS: SAAS application for enterprise, dealing with risk management using Certfous and Prequal. 2. Classlytics.com: QR code and geo-location-based web application for managing and scheduling classes and resources. 3. Agrodrone: Drone-based data collection and Cloud processing system for real-time Agri-analytics and future risk prediction.

I build the plumbing behind AI products — the multi-API orchestration, the webhook pipelines, the retrieval layers, the data flow that has to work every time a user hits the button. A lot of people can prompt an LLM. The harder part is everything around it, and that's the part I've been shipping in production for the last few years. My stack is React + Vite on the frontend, tRPC + Express + Postgres + Drizzle on the backend, and OpenRouter / Claude / OpenAI wherever the model calls live. I use n8n for workflow orchestration when it fits, and write it in code when it doesn't. A quick note on my Upwork history: most of my visible past jobs here are telecom / SMS / IVR / API integration work from 2018 to 2022 — that was my previous chapter. Since 2023 I've moved almost entirely into AI infrastructure and agentic automation, and that's where I'm taking on new work. A few things I've shipped recently (details sanitized for NDA): - A multi-source audit and business-intelligence pipeline pulling from roughly 15 external APIs (search, social, review, directory, analytics). Normalizes the data, runs it through an LLM-assisted scoring layer, and produces a client-ready report end to end — with webhook plumbing, retries, and caching. - A production RAG / content-generation system for a CMS-style product. Embeddings, section-level generation, prompt chains, editorial controls. The kind of system that has to stay correct as the content library grows past thousands of items. - An SSR-optimized financial SaaS calculator with programmatic SEO. Thousands of landing pages, full server-rendered, real tax and yield math under the hood — not a toy. - A local-business reputation pipeline that ingests reviews across sources, dedupes, sentiment-scores, and feeds a response-automation layer. What I'm best at: - Agentic workflow automation — n8n, custom Node orchestration, Claude / OpenRouter integrations, webhook-driven pipelines. - LLM infrastructure — RAG, embeddings, prompt architecture, eval loops, retrieval tuning. - FinTech / calculator / SaaS MVPs where the math has to be right and the product actually ships. - Senior full-stack work on the exact stack above, when AI integration is part of the brief. How I work: I take specs seriously. Hand me a 10-page doc, I'll read it, come back with questions, then build what's in it. I prefer small, reviewable PRs over big drops. I don't subcontract the hard parts — you get me on the actual work. Two things I'm not: I don't take healthcare / dental / ortho projects (existing exclusivity), and I'm not the right fit for generic React-only landing-page builds without an AI layer. Plenty of great freelancers here for that. 243 jobs, $200K+ earned on Upwork, 100% Job Success. If the project is in my lane, I'll tell you straight. If it isn't, I'll tell you that too.

⭐⭐⭐⭐⭐ "Mahabubur (Rony) has been exceptional in delivering high-quality React and TypeScript frontend work. Their attention to detail, responsiveness, and professionalism exceeded our expectations. Highly recommended!" I have extensive and varied experience in front-end development, including working as a senior front-end developer in an award-winning agency located in Singapore. I've implemented and debugged a variety of front-end technologies, and am able to utilize my experience to deliver work efficiently and to a high standard. Services I offer: - Static and server-side rendered website using Astro, next.js. - Headless CMS integration. - Shopify store custom changes. - Tailwind CSS. - Responsive design. - Typescript. - API integration. - Figma, Adobe xd to Astro, next.js, Shopify. - Speed optimization. - Hosting set up on Vercel, Cloudflare, Netlify, etc. - Javascript, CSS - Animation. Why choose me: - Clean code with proper git commits. - Proper project structure. - Reusable component. - 100% client satisfaction. I am always striving to improve my skills and stay current with the latest technologies and trends in web development. Whether you're looking to build a new website or improve your existing one, I am confident that I have the skills and experience necessary to deliver outstanding results. Let's build something amazing together!