I help startups, founders, and businesses build scalable SaaS products, AI-powered applications, and intelligent automation systems from idea to production. With 8+ years of experience in software development and product engineering, I have built and scaled SaaS products, enterprise applications, and AI-powered solutions using Ruby on Rails, React, Next.js, Node.js, and modern AI technologies. My focus is not just writing code, but designing scalable systems and delivering business-focused solutions that drive growth and efficiency. My expertise includes: • Full Stack Web Development (Ruby on Rails, React, Next.js, Node.js, TypeScript) • SaaS MVP Development & Product Architecture • AI Agents & Multi-Agent Systems • RAG (Retrieval-Augmented Generation) Applications • OpenAI, Anthropic, Gemini & Custom LLM Integrations • LangChain, LangGraph & AI Workflow Orchestration • Vector Databases (Pinecone, Weaviate, Chroma, Qdrant) • REST APIs, GraphQL & Third-Party Integrations • PostgreSQL, MongoDB & Scalable Backend Systems • Cloud Infrastructure (AWS, Docker, Vercel) • Workflow Automation & Business Process Optimization Over the years, I have helped businesses launch MVPs, modernize existing products, automate complex workflows, and integrate AI capabilities into production environments. My approach combines strong engineering fundamentals with a deep understanding of product strategy, ensuring solutions are built for performance, scalability, and long-term growth. Whether you're looking to build a SaaS product from scratch, develop AI agents, implement RAG pipelines, integrate LLMs, or scale an existing platform, I can help turn your requirements into production-ready solutions. What you can expect when working with me: ✔ Clean, maintainable, and scalable code ✔ Strong system architecture and best practices ✔ Clear communication and transparent project management ✔ Fast execution with attention to quality ✔ Long-term technical partnership mindset Let's build products that users love and businesses can scale.

✅ 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 | $𝟭𝗠+ 𝐄𝐚𝐫𝐧𝐞𝐝 | 𝟮𝟰𝐊+ 𝐇𝐨𝐮𝐫𝐬 | 𝟱𝟎+ 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐒𝐞𝐫𝐯𝐞𝐝 ✅ 𝐒𝐞𝐧𝐢𝐨𝐫 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐑𝐮𝐛𝐲 𝐨𝐧 𝐑𝐚𝐢𝐥𝐬, 𝐑𝐞𝐚𝐜𝐭, 𝐏𝐲𝐭𝐡𝐨𝐧, 𝐀𝐈/𝑴𝑳 ✅ 𝟭𝟬𝟬% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 | 𝐓𝐫𝐮𝐬𝐭𝐞𝐝 𝐛𝐲 𝐒𝐭𝐚𝐫𝐭𝐮𝐩𝐬 & 𝐄𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞𝐬 I am Full Stack developer with extensive experience in building high quality applications. My experiences range from to building scalable applications for the financial services industry to building responsive sites that work well cross browser. 𝐌𝐲 𝐬𝐤𝐢𝐥𝐥 𝐬𝐞𝐭: 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 𝗶𝗻𝗰𝗹𝘂𝗱𝗲𝘀: React.Js Vue.js Ember js Next js Electon.js 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗶𝗻𝗰𝗹𝘂𝗱𝗲: ROR Shopify MERN Node Python Django 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 𝘄𝗼𝗿𝗸𝗲𝗱 𝗼𝗻: 🏥 Healthcare 📚 EdTech 🧳 Travel 🍱 Food Ordering 💵 Finance 📊 Data Dashboards 💻 Personal Websites Let’s discuss how I can help build, scale, or optimize your web application. Send me a message today and let’s turn your ideas into reality.

Somewhere in your workflow, a process is running on manual effort that could be running on its own. That is usually where I come in. 5 years in software, with the last 2 built around agentic AI and workflow automation. Voice bots that answer calls and qualify leads before a human ever picks up. RAG pipelines that turn a pile of documents into something you can actually ask questions to. n8n, Make, and Airtable workflows that connect your tools and remove the manual steps in between. AI agents that take a process from trigger to finished outcome with nobody babysitting it. In practice, that has meant building things like Guideline Buddy, a mortgage compliance assistant cutting research time from hours to seconds. Neblo AI, a freight automation system for a YC backed startup running 85% of vendor operations on its own. Coworks, a multi-tenant SaaS portal handling member onboarding, billing, and dashboards for coworking operators. And a B2B lead engine that scores, routes, and follows up with prospects around the clock. When the project needs it, I go full stack too, Python, FastAPI, Node.js, React, Ruby on Rails, PostgreSQL, Docker, AWS. The stack is just the toolkit. What actually matters is whether the thing works without you thinking about it. Tell me what is eating your time right now. There is a good chance I can take it off your plate.

Senior Full-Stack Engineer specializing in Ruby on Rails backends with AI/LLM integrations. 10+ years of experience helping startups, SaaS companies, and agencies ship fast, scale cleanly, and add AI features that actually work in production. 🧩 What I Build 🔹 Rails + Next.js SaaS platforms — from MVP to scale 🔹 LLM-powered features — chatbots, RAG pipelines, AI agents, smart search 🔹 High-performance APIs, real-time systems, and clean microservice architectures 🔹 AWS deployments with CI/CD, Docker, and zero-downtime rollouts 🛠 Core Stack Ruby on Rails · Next.js · Node.js · Python/FastAPI · PostgreSQL · AWS · OpenAI (GPT-4 / 4o) · Docker 🏆 Why Clients Work With Me ✅ Top Rated Plus with 100% Job Success ✅ Clear communication, daily updates, no surprises ✅ Senior-level architecture decisions, not just code delivery ✅ I ship on time and explain trade-offs honestly If you're building an MVP, scaling a funded product, or adding AI to an existing SaaS — let's talk.

Full-Stack Developer | Chatwoot & Chatbot Specialist | Ruby on Rails & Vue.js Expert If you're looking for a developer who can seamlessly integrate cutting-edge technologies into your project, you're in the right place. I help businesses build scalable, high-performance web applications — from custom integrations to dynamic chat solutions. What I Specialize In: ✅ Chatwoot Integration & Development ✅ Intelligent Chatbots for Customer Service & Engagement ✅ Custom Chrome Extensions Development ✅ Ruby on Rails (RoR) Backend Architecture ✅ Vue.js Frontend Development ✅ API Development & Custom Integrations ✅ Customer Interaction Automation ✅ Scalable Web Application Development 🛠 Tech Stack Expertise: Frontend: Vue.js, JavaScript, HTML/CSS Backend: Ruby on Rails, Node.js Database: PostgreSQL, MySQL Chat Solutions: Chatwoot, Custom Chatbots Extensions: Chrome Extensions Development Automation: API Integrations, Workflow Automation 🎯 What Makes Me Different: ✔ Successfully delivered projects across various industries ✔ Results-driven approach with a focus on high-quality outcomes ✔ Custom solutions tailored to unique project requirements ✔ Clear communication & transparency throughout the project lifecycle ✔ Comprehensive end-to-end support I don't just build features; I help you create impactful digital products that enhance customer experiences. 🚀 Industries I’ve Worked With: • SaaS Platforms • Customer Support Solutions • E-commerce • Dynamic Web Applications • CRM & Internal Systems Looking to: Enhance customer support with Chatwoot? Develop intelligent chatbots for automation? Build scalable web applications? Create custom Chrome extensions? Let’s connect! Thanks, Jaspinder S. _ Full-Stack Developer Keywords: Full-Stack Developer | Chatwoot Specialist | Chatbot Developer | Ruby on Rails Developer | Vue.js Developer | API Integration | Automation Expert | Web Application Development | Scalable Solutions | Custom Integrations | Chrome Extensions | Customer Interaction | SaaS Developer | Web App Development

Top Rated Plus - 7+ Years on Upwork I build AI systems that actually answer correctly, not chatbots that hallucinate and embarrass you in front of users. RAG pipelines, multi-agent workflows, and LLM apps that ground every response in your real data. If your AI needs to be reliable enough to put in front of customers or run inside your business, you're in the right place. Most "AI projects" fail for the same reason: a demo that works once gets shipped as a product, then falls apart on real queries. I build for the second case, not the first. What I do: - RAG systems: retrieval pipelines that pull the right context every time, with chunking, re-ranking, and citation so answers are grounded and traceable - Multi-agent orchestration: LangGraph-based agents that plan, call tools, and hand off work, built to recover from failure instead of looping forever - LLM integration: OpenAI, Anthropic (Claude), and Hugging Face models wired into your stack with cost and latency controls - Vector databases: Pinecone, Weaviate, Qdrant, Chroma (schema design, embedding strategy, hybrid search, index tuning) - Prompt engineering: structured prompts, evals, and guardrails that make output consistent instead of lucky - Fine-tuning: domain adaptation when prompting isn't enough, with honest advice on when it's worth the cost and when it isn't - NLP: spaCy pipelines for extraction, classification, entity recognition, and text processing at scale - Embeddings: model selection, chunking strategy, and retrieval tuning for accuracy that holds up in production My stack at a glance: Python, LangGraph, LlamaIndex, OpenAI, Anthropic, Hugging Face, Pinecone, Weaviate, Qdrant, Chroma, spaCy, embeddings, prompt engineering, fine-tuning, multi-agent orchestration, RAG, NLP How we'll work: - We talk through the real problem (not just "add AI to it") - I scope it honestly: approach, timeline, cost, and where the accuracy risks are - I build in clear milestones with evals so you can see it actually working, not just demoing - You get clean, documented, tested code you own completely Ready when you are.

Hey! Invite me as your AI colleague and I will help you find where AI can save time, reduce cost, and create measurable ROI in your business. 🌟 Senior Full Stack and AI Engineer for SaaS, AI Agents, Automation 🚀 Scaled platforms to 1 Million+ users 💰 Supported $1 Million and $0.5 Million funded startups 💯 100% client satisfaction 🤝 90% recurring clients 🏆 12+ years of professional experience ⭐ 26,732 plus Upwork hours delivered 🔥 $600K+ plus earned through long term client work ✨ 81 plus five star projects completed I use modern workflows and AI coding tools to move up to 5x faster while still reviewing architecture, security, data flow, and code quality manually. Speed matters, but reliability matters more. Built MVPs for startups with $12 Million+ funding raised and products serving 1.5 Million+ users worldwide. 🔥 𝟳𝟱% 𝗛𝗥 𝗿𝗲𝗱𝘂𝗰𝗲𝗱 with AI Agent Development. 🔥 𝟯-𝟲𝘅 𝗥𝗢𝗜. 𝟴𝟬𝟬+ 𝗵𝗼𝘂𝗿𝘀 n8n Automation. Over 12 years I've delivered $670K+ across Web Development, Web Application, and AI Agent Development engagements in FinTech, HealthTech, PropTech, and B2B SaaS. My clients have collectively raised $12 Million+ in funding: 🔥 Tallyfy ($1.4M), MetaBeta (€500K) 🔥 Elevatus ($10.5M) 🔥 scaled to 1 Million+ active users. I am a full stack developer and AI developer with 12 years of experience building production systems across FinTech, HealthTech, PropTech, and B2B SaaS. My clients have raised $12M+ in funding including Tallyfy ($1.4M), MetaBeta (€500K), and Elevatus ($10.5M), and scaled products to 1.5 Million+ active users worldwide. Over 12 years I have delivered $670K+ across web development, web application, and AI agent development engagements with 90% recurring clients and 100% satisfaction. ✅ 12+ years | $670K+ delivered | 1.5M+ users scaled | $12M+ client funding raised ✅ AI agent development: 75% HR reduction, 3-6x ROI, 800+ hours of n8n automation ✅ Full stack development: 40+ production systems across FinTech, HealthTech, PropTech, SaaS ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Key results from recent engagements: ▸ Reduced a client's HR overhead by 75% using a Python and LangChain AI agent that replaced 3 full-time employees with a 24/7 autonomous sales system ▸ Built API integration pipelines unifying 12 platforms simultaneously and processing 500+ daily NLP queries ▸ n8n automation across 30 active marketing workflows drove a 40% increase in lead generation ▸ AI chatbot and AI app development solutions returning 3-6x ROI within the first 90 days ▸ PostgreSQL optimizations delivering 3x query performance improvements across high-traffic applications ▸ German tax-filing SaaS processing 36 Million+ declarations on Laravel and PostgreSQL ▸ HIPAA-compliant healthcare platform on Node.js, React, and TypeScript ▸ PropTech portal on Next.js, FastAPI, and PostgreSQL handling 100+ search parameters ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 𝗔𝗜 𝗔𝗴𝗲𝗻𝘁 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ AI agent development is my primary engineering focus. I design and build full agentic pipelines using Python, LangChain, and machine learning, from RAG-powered vector retrieval and knowledge graphs through to voice AI bots and autonomous multi-agent orchestration. Every AI agent system I deliver applies prompt engineering discipline and data science principles for domain accuracy. I treat AI development as a full-stack business transformation, not a feature addition. I layer API integration, API development, and RESTful API surfaces over FastAPI, Django, and Node.js backends, then deliver them through React, Vue.js, and Next.js frontends. Every AI agent development system I architect applies data science and prompt engineering for domain accuracy. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ I build backend systems on PHP, Laravel, Django, FastAPI, Node.js, NestJS, ExpressJS, and Ruby on Rails. Frontend interfaces are built with React, Vue.js, Next.js, Angular, TypeScript, JavaScript, HTML5, CSS3, and Tailwind CSS. Databases are PostgreSQL, MySQL, and MongoDB. Deployments run on Docker and AWS. I have delivered 40+ production full stack systems across every major vertical. API integration, API development, HTML5, and RESTful API connectivity are non-negotiable standards in every full stack project I lead. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 𝗪𝗲𝗯 𝗔𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻 & 𝗪𝗲𝗯 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ I have built web application and web development systems across every major vertical. React and Next.js frontends pair with PHP, Laravel, and Node.js backends grounded on PostgreSQL, MySQL, and MongoDB. I bring CSS3, HTML5, Tailwind CSS, TypeScript, and automation engineering precision to every interface. Every system I deliver is production-grade, documented, and built to scale. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

I am a highly skilled Senior Ruby On Rails full-stack developer with an impressive 12+ years of experience in the field. My expertise extends beyond Ruby on Rails, encompassing proficiency in JavaScript frameworks such as VueJS, ReactJS, Typescript, and stimulusJS. Throughout my career, I have successfully developed and maintained robust online applications for various industries, including healthcare, education, finance, and social services. My commitment to delivering excellence is evident in my consistent track record of completing projects with the highest levels of performance and quality. I specialize in architecting enterprise-level applications, and my ability to adapt and integrate cutting-edge technologies ensures that I stay ahead of the curve in the rapidly evolving tech landscape. In addition to my Ruby on Rails expertise, I have a keen understanding of generative AI, enabling me to incorporate AI seamlessly into applications. I have successfully implemented AI-powered chatbots to enhance customer interactions and utilized AI algorithms to personalize user experiences. Having worked with Rails versions ranging from 3 to 7, I am well-versed in the latest improvements and innovations within the framework. My skill set allows me to coordinate in-the-moment user interactions, providing a dynamic and user-friendly experience. With a proven track record in both Ruby on Rails and various JavaScript frameworks, I am well-equipped to contribute to the success of your projects by combining technical expertise, innovative solutions, and a deep understanding of the latest industry trends. Looking forward to hearing from you! Best Regards, Rahul

🏆 Top Rated Plus Upwork Freelancer ⭐ Trusted by Startups & Growing Businesses 🤝 Long-Term Technology Partner 🤖 𝗔𝗜 𝗔𝗴𝗲𝗻𝘁 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 | 𝗔𝗜 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 | 𝗥𝗔𝗚 | 𝗠𝗖𝗣 | 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗔𝗜 𝗦𝗮𝗮𝗦 I help startups and businesses design, develop, and scale production-ready AI applications that solve real business problems. From AI agents, RAG systems, and MCP integrations to AI workflow automation, AI voice solutions, and AI-powered SaaS platforms, I build end-to-end products that integrate seamlessly with existing systems and workflows. My expertise goes beyond connecting LLM APIs. I engineer intelligent AI systems that can reason, retrieve knowledge, use external tools, automate complex business processes, and deliver reliable, scalable solutions that create measurable business value in production. With 9+ years of full-stack engineering experience, I've built and scaled SaaS platforms, AI products, internal business systems, and cloud-native applications used by startups and growing companies. I understand not only how to integrate LLMs, but also how to design the surrounding architecture that makes AI systems secure, reliable, and maintainable. 𝗪𝗵𝗮𝘁 𝗜 𝗕𝘂𝗶𝗹𝗱 🤖 𝗔𝗜 𝗔𝗴𝗲𝗻𝘁𝘀 & 𝗔𝗴𝗲𝗻𝘁𝗶𝗰 𝗦𝘆𝘀𝘁𝗲𝗺𝘀 • AI Customer Support Agents • AI Sales & Lead Qualification Agents • AI Research Assistants • Multi-Agent Systems • AI Voice Agents • AI Workflow Automation • RAG Knowledge Bases • MCP Server Integrations • Tool Calling & Function Calling • OpenAI & Claude Integrations • Structured LLM Outputs • Prompt Engineering • LangGraph & Agentic Workflows • AI Document Processing • Semantic Search 🚀 AI-Powered SaaS Applications I build complete AI-powered web applications from architecture to deployment. This includes: • AI SaaS Products • Internal Business Platforms • AI Dashboards • Knowledge Management Systems • AI Search • AI Chat Interfaces • Multi-Tenant SaaS • Subscription Platforms • Admin Portals • API Platforms ⚙️ Backend Engineering • Python (FastAPI, Django) • Ruby on Rails • Node.js / NestJS • REST APIs • GraphQL APIs • PostgreSQL • Redis • MongoDB • Background Jobs • Event-Driven Systems • Webhooks • Stripe & Stripe Connect • Authentication & RBAC • Microservices 🌐 Frontend • React • Next.js • TypeScript • Vue.js • Tailwind CSS • Responsive UI • Progressive Web Apps ☁️ Cloud & Infrastructure • AWS • Google Cloud • Docker • Serverless Deployments • CI/CD Pipelines • PostgreSQL • pgvector • Pinecone • Redis • Monitoring & Logging Recent Projects AI Customer Support Platform Built an AI-powered customer support platform combining AI voice agents, RAG, and external integrations. The system handled inbound customer conversations, retrieved company knowledge in real time, executed business workflows, and significantly reduced the need for manual support. AI Legal SaaS Platform Designed and developed a multi-tenant LegalTech platform with secure authentication, Stripe Connect billing, webhook infrastructure, document management, and role-based access control for enterprise customers. AI Financial Analytics Platform Developed scalable backend services processing high-volume cryptocurrency market data using asynchronous pipelines, exposing analytics through secure APIs and real-time dashboards. AI Workflow Automation Built intelligent workflows that connected LLMs with external APIs, business systems, and internal tools, allowing AI agents to perform complex multi-step tasks autonomously. Technologies Artificial Intelligence OpenAI • Claude • LangGraph • LangChain • LlamaIndex • MCP • RAG • Function Calling • Tool Calling • Prompt Engineering • AI Automation • AI Agents • Semantic Search • Vector Databases Backend Python • FastAPI • Django • Ruby on Rails • Node.js • NestJS Frontend React • Next.js • TypeScript • Vue.js • Tailwind CSS Databases PostgreSQL • pgvector • Pinecone • Redis • MongoDB Infrastructure AWS • Docker • CI/CD • Serverless • REST APIs • GraphQL • Stripe • GitHub Actions How I Work I don't just build features. I help clients make sound technical decisions that will still make sense a year from now. That means thinking carefully about architecture, scalability, maintainability, security, and the overall product strategy before writing code. Whether it's designing an AI agent, integrating OpenAI or Claude into an existing platform, building a scalable SaaS application, or modernizing backend infrastructure, I focus on delivering solutions that are reliable, practical, and built for long-term growth. If you're looking for someone who understands both AI engineering and product development, I'd be happy to discuss your project. #lovable #lovabledeveloper #aiproductbuilding

I’m a Senior Full-Stack Developer (Ruby on Rails, React, Next.js, Vue, Node.js) with 8+ years of experience building scalable SaaS platforms, dashboards, SPAs, and eCommerce applications. I help businesses turn ideas into high-performance web applications that are fast, reliable, and built to scale. My approach combines modern frontend experiences with strong backend architecture—and now AI-powered capabilities—to deliver real business impact, not just code. ✅ What I Deliver: ● Modern Frontend Development Building responsive, high-performance UIs using React, Next.js, Vue, and TailwindCSS. ● Scalable Backend Systems Developing robust APIs and backend logic with Ruby on Rails and Node.js. ● SaaS & Dashboard Development Designing and delivering complex platforms with clean UX and efficient data handling. ● AI Integration & Automation Integrating GPT/OpenAI APIs and building AI-powered workflows for SaaS and enterprise apps. – Developed AI chatbots that reduced customer response time by up to 50% – Built GPT-powered features that improved user engagement and reduced support load ● Cloud & DevOps Setting up CI/CD pipelines (GitHub Actions, Docker) and deploying on AWS & Heroku. ● Database & Performance Optimization Working with PostgreSQL, MySQL, MongoDB, and Redis for speed, scalability, and reliability. ● Third-Party Integrations Stripe, payment gateways, APIs, and Google services seamlessly integrated. 💼 Domain Experience: ● SaaS Platforms – Scalable apps with AI-powered workflows and smart automation. ● eCommerce & Retail Tech – AI-driven recommendations and automated processes. ● Dashboards & Analytics – Interactive, data-driven dashboards with real-time insights. ⭐ What You Can Expect: ● Clean, maintainable, and scalable code ● Fast communication & reliable delivery ● Strong problem-solving mindset ● Long-term support and collaboration 🚀 Let’s build something that not only works—but scales with your business.