Hire the Best Amazon Cognito Developers in Mohali, IN

Are you looking to build an AI-powered SaaS product, scale a Next.js/Supabase application, or modernize a high-traffic platform? I’m a Senior Full-Stack Engineer with 12+ years of experience delivering production-ready web apps and AI-driven platforms. With **1,500+ hours logged on Upwork** and a **100% Job Success Score**, I specialize in shipping fast, type-safe, and scalable web solutions without breaking production. --- ### 🚀 What I Can Build & Solve for You * **Full-Stack SaaS & Web Apps:** Next.js (App/Pages Router), React, Node.js, Express, Supabase (PostgreSQL, Row-Level Security, Auth), and MongoDB/MERN stack. * **AI & LLM Integration:** Building custom Model Context Protocol (MCP) servers, OpenAI/Claude integrations, and AI SaaS tools. * **State Management & Data Fetching:** React Query (TanStack Query), Zustand, Redux, and complex REST / GraphQL API integrations. * **Performance Engineering:** Optimizing Core Web Vitals / Lighthouse scores by 30–40% on enterprise React applications. * **Quick Fixes & Troubleshooting:** Rapidly diagnosing bugs, state bugs, UI/UX polish, or API bottlenecks in live production apps. --- ### 🛠 Tech Stack * **Frontend:** Next.js, React.js, TypeScript, JavaScript, Tailwind CSS, Material UI, Bootstrap * **Backend & DB:** Node.js, Express.js, Supabase, PostgreSQL, MongoDB, RESTful APIs, GraphQL * **AI & Automation:** Custom MCP Servers, OpenAI API, Claude API, Cursor / Lovable tooling integration * **DevOps & Hosting:** Vercel, Render, AWS, Git/GitHub --- ### 💡 Why Work With Me? 1. **Proven Track Record:** Led a 5-engineer team building high-traffic, government-scale education platforms—I build for long-term stability and clean architecture. 2. **Rapid MVP Delivery:** Built and shipped 3+ MVPs from initial concept to live production in under 4 weeks. 3. **Clear & Honest Communication:** Direct feedback on architectural trade-offs, scope, and implementation strategy before writing a single line of code. Whether you need a full MVP built from scratch, complex AI features integrated, or quick performance and state fixes, let’s talk! **Send me a message with what you're building, and I'll share how I'd approach it.**

Hi, I’m a mobile app developer with 10+ years of experience building high-quality iOS and Flutter applications for startups, growing businesses, and enterprise teams. I specialize in creating reliable, scalable, and user-friendly mobile apps from idea validation and development to deployment, optimization, and long-term support. What I can help you with: • Native iOS app development using Swift, Objective-C, and SwiftUI • Cross-platform app development with Flutter • AI/ML integration to add smarter app functionality • AR app development using ARKit, RealityKit, and SpriteKit • BLE, Wi-Fi, and IoT-enabled mobile applications • API integrations, real-time communication, and cloud-connected apps • App maintenance, performance optimization, and post-launch support I have worked across a wide range of industries, including healthcare, e-learning, retail, eCommerce, music, VoIP, market research, food & beverage, real estate, geo-location, live broadcasting, and social networking. My technical expertise includes: • Swift, Objective-C, SwiftUI, Flutter • REST APIs, GraphQL, WebSockets, gRPC, MQTT • Firebase, AWS, GCP, Azure • OAuth, Firebase Auth, Amazon Cognito • Core ML, ML Kit, Vertex AI, Vision AI • BLE, Raspberry Pi, Arduino, STM32, mDNS • In-app purchases, subscriptions, analytics, and monetization I focus on delivering apps that are not only well-built technically, but also aligned with business goals, user experience, and long-term scalability. Whether you need a new app built from scratch, advanced feature development, AI or AR integration, or ongoing mobile support, I’d be glad to help bring your idea to life.

Senior Full-Stack Engineer | 10+ Years | NODE JS | PYTHON | AI/LLM | CLOUD (AWS, GCP) | REACT NATIVE | REACT | ANGULAR | VUE | MICRO FRONTEND | MICRO SERVICE | CI/CD ✅ DOMAINS → Healthcare (PBM, 340B, patient management), FinTech (loan automation, credit scoring, digital KYC), Staffing (ATS, candidate engagement), Marketing (campaign apps) ✅ CERTIFIED EXPERTISE → AWS SOLUTIONS ARCHITECT – ASSOCIATE | AWS DEVELOPER – ASSOCIATE | MONGODB DEVELOPER – ASSOCIATE ✅ END-TO-END DEVELOPMENT → Backend APIs (NODE JS, PYTHON, FLASK, FASTAPI) to Frontends (REACT, ANGULAR, VUE, REACT NATIVE) ✅ CLOUD & SERVERLESS → AWS (LAMBDA, ECS, DYNAMODB, S3, API GATEWAY), GCP, Microservices & Event-driven systems handling millions of transactions/day ✅ AI/LLM ENGINEERING → LANGCHAIN, LANGGRAPH, HUGGING FACE, OPENAI — RAG pipelines, vector search, agentic workflows ✅ CI/CD & DEVOPS → GITHUB ACTIONS, JENKINS, TERRAFORM, CLOUDFORMATION, DOCKER, KUBERNETES — automated deployments, reduced setup from days to hours ✅ SCALABILITY & PERFORMANCE → Supported thousands of concurrent users, 30% faster load times, reduced infra setup drastically ✅ LEADERSHIP → Stakeholder collaboration, team mentorship, improved delivery speed & code quality

I help startups and growing businesses build scalable SaaS products, AI-powered applications, cloud infrastructure, and backend systems that are designed for long-term growth. Over the last 10+ years, I've worked as a CTO, Engineering Manager, and Senior Full-Stack Engineer, helping companies take products from idea to production while keeping performance, scalability, and maintainability at the core. A few projects I've worked on: • PrepLadder (Acquired by Unacademy) Led engineering for a platform serving over **2 million users**, working on AWS microservices, DRM-protected video streaming, personalized learning systems, and large-scale backend architecture. • Enciser Co-founded an IoT and energy management platform where I designed a serverless AWS architecture for real-time device monitoring, mobile applications (iOS & Android), and cloud-based automation. • Enterprise Platforms Built backend systems, cloud infrastructure, and distributed applications for companies including Zucora, TruckBook, Emerald Planet, and Kryptet, using Go, Python, Kubernetes, Docker, Redis, Cassandra, and modern cloud-native architecture. Across my career, I've helped design and deploy 50+ production applications across SaaS, AI, IoT, marketplaces, fintech, and enterprise platforms. My core expertise • Backend Development Python, Node.js, Go, Django, Flask • Frontend React, React Native, Next.js • Databases PostgreSQL, MySQL, MongoDB, DynamoDB, Cassandra, Redis, ScyllaDB • Cloud & DevOps AWS, Docker, Kubernetes, Terraform, Jenkins, GitHub Actions, Ansible • Integrations Stripe, Twilio, OpenAI, Firebase, Shopify, Slack, SendGrid, Google Maps, Zendesk, and other third-party APIs. What I usually help clients with : ✔ Building scalable backend architecture ✔ AI & LLM integrations ✔ SaaS product development ✔ API design and third-party integrations ✔ Real-time applications using WebSockets, MQTT, and event-driven systems ✔ Cloud infrastructure, DevOps, and deployment automation ✔ Engineering leadership and technical architecture What it's like working with me I don't just write code,I help clients make good technical decisions.I'm comfortable joining an existing codebase, understanding how it works, identifying bottlenecks, and delivering features that are easy to maintain as the product grows. I believe in clean architecture, clear communication, proper documentation, and shipping reliable software instead of quick fixes. I've worked with distributed teams across Canada, Australia, Sweden, and India, and I'm equally comfortable working independently or collaborating closely with founders and engineering teams. If you're building a product that needs to scale, I'd be happy to discuss how I can help. ramansaini.in

👋 About Me I’m Aashish, a Senior Software Engineer with 8+ years of experience building dynamic, scalable, and high-performing web applications. My expertise lies in Node.js and Laravel for backend development and React, Angular, and Vue.js for crafting intuitive, modern frontends. I bring a startup mindset, strong ownership, and a proven track record of delivering projects that drive real business results. 🛠️ Tech Stack I Work With Backend: Node.js (Express.js, NestJS), Laravel, .NET Frontend: React (Next.js), Angular, Vue.js, TypeScript, TailwindCSS, Bootstrap, Material UI, HTML5, CSS3, jQuery, Ajax Mobile Apps: React Native Databases: PostgreSQL, MySQL, MongoDB, Redis, Firestore, SQLite, LanceDB AI & ML: LangChain, RAG, VectorDB, Python, OpenAI, Gemini, DeepSeek, LLMs Cloud & DevOps: AWS (Certified – Lambda, EC2, S3, DynamoDB), GCP (BigQuery, Pub/Sub), Docker Payments: Stripe, PayPal, Razorpay, Square, Authorize.net, Apple Pay APIs: REST, GraphQL, FastAPI, Microservices, OAuth, JWT, Firebase Functions, Webhooks Version Control / CI/CD: Git, GitHub, GitLab, Bitbucket ✅ Why Work With Me Proven delivery record → 100% success rate across all projects. Client-focused mindset → I treat every project as if it’s my own product. Transparent & proactive communication → no delays, no guesswork. Future-ready code → clean, modular, scalable, and built to last. 🎯 What Sets Me Apart Always updated with modern frontend meta (Vite, Signals, Server Actions). Strong design eye + clean component architecture for delightful user experiences. Flexible with monorepos, microfrontends, and serverless-first approaches. Startup mentality → fast iterations, ownership, and focus on business outcomes. 🚀 Why You Should Hire Me I bridge business goals with technology → not just writing code, but creating solutions that improve performance, engagement, and revenue. I’ve built SaaS platforms, marketplaces, dashboards, and AI-powered apps that scale to thousands of users. I’m AWS Certified, ensuring your product is cloud-ready, secure, and future-proof. I bring 8+ years of hands-on experience across multiple tech stacks — so you don’t need separate hires for backend, frontend, mobile, or cloud. I believe in long-term relationships, helping clients grow from MVP to production success. 👉 If you’re building a SaaS product, Web3 platform, or next-gen AI-enabled application, and you want a developer who cares about performance, polish, and scalability — let’s work together and bring your vision to life.

𝐓𝐎𝐏 𝐑𝐀𝐓𝐄𝐃 𝐒𝐄𝐍𝐈𝐎𝐑 𝐁𝐀𝐂𝐊𝐄𝐍𝐃 𝐄𝐍𝐆𝐈𝐍𝐄𝐄𝐑 𝐀𝐍𝐃 𝐀𝐆𝐄𝐍𝐓𝐈𝐂 𝐀𝐈 𝐃𝐄𝐕𝐄𝐋𝐎𝐏𝐄𝐑 𝐅𝐎𝐂𝐔𝐒𝐄𝐃 𝐎𝐍 𝐁𝐔𝐈𝐋𝐃𝐈𝐍𝐆 𝐏𝐑𝐎𝐃𝐔𝐂𝐓𝐈𝐎𝐍-𝐆𝐑𝐀𝐃𝐄 𝐒𝐘𝐒𝐓𝐄𝐌𝐒, 𝐀𝐏𝐈𝐒, 𝐀𝐍𝐃 𝐀𝐈-𝐃𝐑𝐈𝐕𝐄𝐍 𝐀𝐏𝐏𝐋𝐈𝐂𝐀𝐓𝐈𝐎𝐍𝐒. I am responsible for delivering features end-to-end, defining execution plans, and maintaining systems under real production load. Work includes backend development, system design, and architecture decisions that hold up over time. 𝐂𝐨𝐫𝐞 𝐬𝐭𝐚𝐜𝐤: Python, Node.js, RAG, LLM, Automation, TypeScript, JavaScript. Focus on scalable systems, high-performance applications, and maintainable code. 𝐖𝐇𝐀𝐓 𝐈 𝐂𝐀𝐍 𝐇𝐄𝐋𝐏 𝐘𝐎𝐔 𝐖𝐈𝐓𝐇? ▸ 𝐁𝐀𝐂𝐊𝐄𝐍𝐃 / 𝐏𝐘𝐓𝐇𝐎𝐍 𝐃𝐄𝐕𝐄𝐋𝐎𝐏𝐌𝐄𝐍𝐓 ✓ Python Developer with experience in Django, Flask, and FastAPI. ✓ Building REST APIs, microservices, async systems, and data pipelines. ✓ Experience with Celery, background processing, ETL workflows, and data processing systems. ✓ Focus on performance, clean architecture, and long-term maintainability. ▸ 𝐁𝐀𝐂𝐊𝐄𝐍𝐃 𝐍𝐎𝐃𝐄.𝐉𝐒 / 𝐉𝐀𝐕𝐀𝐒𝐂𝐑𝐈𝐏𝐓 ✓ Node.js Developer using TypeScript and Express.js. ✓ Backend API development, server-side applications, and event-driven architecture. ✓ Designing services that handle real-world load, failures, and edge cases. ▸ 𝐀𝐈 𝐀𝐆𝐄𝐍𝐓 𝐃𝐄𝐕𝐄𝐋𝐎𝐏𝐌𝐄𝐍𝐓 ✓ AI Agent architecture — LangChain, LangGraph, CrewAI, AutoGen, custom orchestration ✓ RAG systems — Pinecone, Weaviate, MongoDB Atlas Vector, pgvector, hybrid search, reranking ✓ LLM layer — OpenAI (GPT-4o / o1), Anthropic Claude, Gemini, open-source via Ollama / vLLM ✓ MCP servers — custom Model Context Protocol integrations for Claude Desktop and custom clients ✓ Automation — n8n, Make, Zapier, custom Python workers ✓ Eval & guardrails — LangSmith, Ragas, Arize, prompt and output evaluation pipelines ▸ 𝐅𝐔𝐋𝐋 𝐒𝐓𝐀𝐂𝐊 𝐃𝐄𝐕𝐄𝐋𝐎𝐏𝐌𝐄𝐍𝐓 ✓ Full Stack Developer working with React and Next.js. ✓ Building web applications, dashboards, and frontend integrations connected to backend systems. ✓ SPA development and UI integration with APIs. ▸ 𝐃𝐀𝐓𝐀𝐁𝐀𝐒𝐄𝐒 / 𝐈𝐍𝐅𝐑𝐀𝐒𝐓𝐑𝐔𝐂𝐓𝐔𝐑𝐄 ✓ PostgreSQL, MongoDB, Redis, Elasticsearch ✓ Database design, query optimization, indexing, high-load systems ✓ S3, SQS, Lambda, Athena, DynamoDB, EKS, Kinesis, Bedrock, CloudFront ✓ Docker, Kubernetes (Helm + ArgoCD), Terraform for IaC ✓ Datadog APM, OpenTelemetry, Sentry ✓ Qdrant, AWS OpenSearch for semantic search and RAG retrieval ✓ CI/CD, Kubernetes, serverless, Azure, Google Cloud 🤝 𝐋𝐞𝐭’𝐬 𝐁𝐮𝐢𝐥𝐝 𝐘𝐨𝐮𝐫 𝐀𝐈 𝐀𝐠𝐞𝐧𝐭 𝐎𝐫 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐒𝐲𝐬𝐭𝐞𝐦 If you're looking for Backend or AI Agent Developer to ship your next Full Stack, AI Agent, RAG system, or AI SaaS product, send me your docs or a short brief. I'll reply within 1 hour with an architecture sketch and a realistic delivery timeline.