✅ Top 3% top-rated plus freelancer on upwork with 100% job success score
🔥 Senior, dedicated, passionate and AI-native senior software full-stack engineer | MVP, SaaS, B2B product builder | 8+ years experience in software development | I don't just build features. I ship systems that survive production traffic, support paying customers, and drive business growth.
🏆 Delivered projects with 100% client satisfaction | Trusted by clients worldwide to build reliable, high-impact software products.
🥷 Strong problem-solving skills | Excellent communication skills | Product mindset | Quick learner
🤜🤛 Worked directly with founders, CEOs, CTOs, and cross-functional teams in remote environments to align business goals with technical execution and deliver impactful products.
🚀 I am using AI tools to ship production-grade software faster, without sacrificing architecture, quality, or long-term maintainability
👩🏻💼 I help startups, founders, and growing businesses build scalable, production-ready software products.
My expertise spans Frontend Development with React.js, Next.js (SSR, CSR), TypeScript, SEO optimization, WCAG accessibility compliance, responsive design, and performance optimization to create fast, user-friendly experiences across web and mobile devices.
On the Backend, I work with Node.js, Python, and Laravel to build robust APIs, authentication systems, database architectures, and scalable business applications that support long-term growth.
I also manage DevOps and Cloud Infrastructure, including CI/CD pipelines, Docker, cloud deployments, infrastructure management, monitoring, and automated release workflows to ensure reliable and efficient delivery.
In the AI space, I build AI-powered applications using RAG (Retrieval-Augmented Generation) pipelines, LLM integrations (OpenAI, Claude, and Gemini integrations), vector databases, AI chatbots, knowledge bases, document processing, and semantic search solutions.
From a Product Engineering perspective, I focus on scalable architecture, SaaS platforms, third-party integrations, maintainable codebases, and production-ready systems designed for real-world usage.
🏢 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 𝐀𝐜𝐫𝐨𝐬𝐬 𝐌𝐮𝐥𝐭𝐢𝐩𝐥𝐞 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 & 𝐒𝐜𝐚𝐥𝐚𝐛𝐥𝐞 𝐒𝐨𝐟𝐭𝐰𝐚𝐫𝐞 𝐏𝐫𝐨𝐝𝐮𝐜𝐭𝐬 ERP systems, FinTech, EdTech, Healthcare, Social Media platforms, Sports applications, Booking systems, Business SaaS tools, Gaming platforms, Chatbots, Multi-tenant web apps, Distributed systems, Marketing sites, Landing pages, CRM, and CMS.
🗣️ 𝐖𝐡𝐚𝐭 𝐜𝐥𝐢𝐞𝐧𝐭𝐬 𝐬𝐚𝐲 𝐚𝐛𝐨𝐮𝐭 𝐦𝐞 𝐚𝐟𝐭𝐞𝐫 𝐰𝐨𝐫𝐤𝐢𝐧𝐠 𝐰𝐢𝐭𝐡 𝐦𝐞: ➔ "Exceptional, excellent freelancer!" ➔ “Strong sense of ownership and attention to detail” ➔ "High-quality work with impressive speed” ➔ "Proactively suggests improvements that enhance the product” ➔ "Always reliable and delivers under pressure” ➔ "Seamlessly integrates into the team”
🖥️ 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝: React.js, Next.js, JavaScript, TypeScript, HTML, CSS, SCSS, Tailwind, Bootstrap, Progressive Web Apps (PWA), React Native, Styled Component, Websocket, WebRtc, Astro, Jamstack, Shadcn/ui, MUI, BaseUI 𝐁𝐚𝐜𝐤𝐞𝐧𝐝: Node.js, Express.js, Nest, PHP, Laravel, Python (Django, FastApi), GraphQL 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬: CRM (HubSpot, Salesforce, Zoho, Pipedrive); CMS & Headless CMS (WordPress, Strapi, Sanity, Contentful, Ghost); Analytics (Mixpanel and Google Analytics); Customer engagement platforms (CustomerIO); and third-party API integrations 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬: MongoDB, Supabase RLS (Row Level Security), PostgreSQL, MySQL, Firebase 𝐀𝐈 / 𝐌𝐋: RAG (Retrieval-Augmented Generation), Vector Embeddings, Semantic Search, LLM Integration, Prompt Engineering, LangChain 𝐕𝐞𝐜𝐭𝐨𝐫 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬: pgvector, Supabase Vector Store 𝐂𝐥𝐨𝐮𝐝 & 𝐃𝐞𝐯𝐎𝐩𝐬: Vercel, AWS, GCP, Azure, Heroku, GitHub Actions, CI/CD Pipelines, Docker, Railway 𝐀𝐈 𝐓𝐨𝐨𝐥𝐬: Claude Code, Github Copilot, Lovable, Cursor, Codex, Replit, ChatGPT, Gemini, Bolt, etc.
🛠️ 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 ➔ SaaS & MVP Development ➔ Full-Stack Web Development (React, Next.js, Node.js, Python, Laravel) ➔ AI, LLM & RAG Development (OpenAI, Claude, Gemini) ➔ AI Agents, LangChain & LangGraph Solutions ➔ API Development & Third-Party Integrations ➔ Cloud & DevOps Engineering (AWS, Docker, CI/CD) ➔ Multi-Tenant SaaS Architecture & Security ➔ Stripe Billing & Subscription Systems ➔ Legacy Application Modernization
📫How to reach me:
- https://www.upwork.com/freelancers/anjalikalsariya
- https://www.linkedin.com/in/anjali-kalsariya-09394b12b/
🤝 If you're looking for someone who understands both technology and business goals, invite me on Upwork. I’d be happy to contribute to building a successful product
Thank You