I build and productionize AI SaaS apps using Next.js, FastAPI, OpenAI/Claude, LangChain, PostgreSQL, Redis, and AWS - from rough prototype to secure, scalable product. Many teams now start with Lovable, Replit, Bolt, v0, Cursor, or internal AI-generated prototypes. I help turn those early versions into real software: clean architecture, backend APIs, database design, authentication, dashboards, AI workflows, background jobs, integrations, deployment, and maintainable code. My strongest fit is for founders, agencies, and product teams who need more than a demo. I can own the full product layer around the AI: frontend, backend, database, LLM orchestration, API integrations, async workflows, and production handoff. Recent relevant builds include: • Multi-tenant AI assistant for SMEs: a Next.js chatbot with FastAPI + Temporal backend, OpenAI/Anthropic/Azure OpenAI/Gemini via LangChain, and Python-based PPT/PDF generation to S3. • AI news aggregation platform: RSS/web ingestion, embeddings, story clustering, relevance scoring, personalized daily briefs, admin tooling, Redis, PostgreSQL, and email delivery. • AI clinical documentation SaaS: speech-to-text, structured note generation, document parsing, templates, clinician workflows, role-based dashboards, and healthcare-focused SaaS architecture. • HIPPA Complaint Healthcare SaaS dashboard and patient portal: records, test results, visit history, doctor communication, role-based access, backend APIs, and responsive Next.js UI. I can help with: • AI SaaS product architecture and development • OpenAI, Claude, Gemini, and Azure OpenAI integrations • RAG, document parsing, embeddings, vector search, and structured outputs • Next.js dashboards, admin portals, and SaaS frontends • FastAPI/NestJS backends, PostgreSQL, Redis, S3, and webhooks • Multi-tenant auth, subscriptions, API integrations, and AWS deployment • Background jobs, async workflows, queues, and production automation • React Native/Expo mobile apps when the product needs an AI/mobile frontend My development workflow is AI-assisted but human-owned. I use tools like Codex and Claude Code for scaffolding, refactoring, debugging, test generation, reviewing diffs, and faster iteration — while I personally own the architecture, technical decisions, security, testing, and final code quality. Good fit if you need a developer who can connect the AI workflow with the real product around it: auth, database, API, dashboard, billing, background jobs, integrations, deployment, and maintainable code.

A Passionate AI + Fullstack Developer with 4+ years of experience. Proficient in developing web applications using frameworks like Django, DRF, Flask, Flask REST, FastAPI. Expertise in Web Scraping with bs4, Scrapy, and Selenium. Deep knowledge of containerization with Docker. Experience with AWS Cloud Services like Lambda Functions, ECS, EC2, API Gateway, S3, SES, SNS, CodePipeline. Worked with LLMs, GenAI, RAG, Agents and Multi-Agents systems. Tech Stack : - Python - LLM : LangChain, OpenAI, Google, Claude, HuggingFace - Agents: LangGraph, CrewAI, - Web Frameworks : Django, DRF, Flask, Flask REST, FastAPI - Web Scraping and Automation : BeautifulSoup, Scrapy, Selenium - AWS Cloud Services : DynamoDB, API Gateway, Lambda Functions, S3, EC2, ECS, Fargate, ECR, API Gateway, SNS, SQS, CodePipeline - Utilities : Celery, Web Socket, Docker - Testing : Pytest, unittest - Payment Integration : Stripe, Razorpay - Version Control : Git, GitHub, GitLab - Front-end : HTML, CSS, JavaScript, JQuery, AJAX, React - Database : SQL : PostgreSQL, MySQL, MSSQL, SQLite, NoSQL : Firebase, MongoDB, DynaomDB

I help startups and businesses build production-ready AI products that scale, perform, and deliver real business value. Over the last 5+ years, I've worked on 30+ AI and SaaS applications across healthcare, fitness, cybersecurity, education, fintech, marketplaces, and business automation. My focus is simple: building AI systems that work reliably in production, scale with growing user demands, and solve real business problems. From AI agents and RAG systems to complete SaaS platforms and enterprise integrations, I manage the entire product lifecycle from architecture and development to deployment and post-launch optimization. I've delivered solutions used by thousands of users while maintaining a 100% Job Success Score, Top Rated status, and long-term client partnerships on Upwork. ━━━━━━━━━━━━━━━━━━━━ ▸ 𝗪𝗛𝗔𝗧 𝗜 𝗕𝗨𝗜𝗟𝗗 ━━━━━━━━━━━━━━━━━━━━ ✔ Production-ready AI Applications ✔ AI Agents and Multi-Agent Systems ✔ RAG Systems with Vector Databases ✔ AI Chatbots, Copilots, and Virtual Assistants ✔ Conversational AI Applications ✔ AI Workflow Automation ✔ Enterprise Knowledge Base Assistants ✔ Document Intelligence Solutions ✔ AI-powered Search and Recommendation Engines ✔ Custom Dashboards, CRMs, and Admin Portals ✔ Multi-tenant SaaS Platforms ✔ API Development and Third-party Integrations ✔ Real-time Analytics and Monitoring Platforms ✔ Full-Stack Web Applications from Idea to Launch ✔ MVP Development for Startups and Founders ✔ Existing AI Product Optimization and Debugging → Whether you need a new AI product or want to improve an existing one, I can take ownership from concept to deployment. ━━━━━━━━━━━━━━━━━━━━ ▸ 𝗖𝗢𝗥𝗘 𝗧𝗘𝗖𝗛 𝗦𝗧𝗔𝗖𝗞 ━━━━━━━━━━━━━━━━━━━━ ◆ Frontend → React.js → Next.js → TypeScript → JavaScript → Tailwind CSS ◆ Backend → Python → FastAPI → Django → Node.js → Express.js → REST APIs → GraphQL APIs → WebSockets → Microservices Architecture ◆ Artificial Intelligence → OpenAI API → Claude API → Gemini API → LangChain → LlamaIndex → AI Agents → Agentic AI → Multi-Agent Systems → RAG Pipelines → Vector Embeddings → Prompt Engineering → AI Automation → LLM Applications → Conversational AI → AI Chatbots → Function Calling → Tool Calling → Semantic Search ◆ Databases → PostgreSQL → Supabase → MongoDB → Firebase → Vector Databases → Redis ◆ DevOps & Deployment → Docker → AWS → Vercel → CI/CD Pipelines → GitHub Actions → Linux Servers → Nginx ━━━━━━━━━━━━━━━━━━━━ ▸ 𝗜𝗡𝗗𝗨𝗦𝗧𝗥𝗜𝗘𝗦 𝗦𝗘𝗥𝗩𝗘𝗗 ━━━━━━━━━━━━━━━━━━━━ ✔ Healthcare AI Platforms ✔ Fitness and Wellness Applications ✔ Cybersecurity and Compliance Solutions ✔ Education and Learning Platforms ✔ FinTech and Payment Systems ✔ SaaS Products and Startups ✔ Business Intelligence Solutions ✔ Marketplaces and E-commerce Platforms ✔ Operations and Analytics Platforms ✔ Enterprise Automation Systems ━━━━━━━━━━━━━━━━━━━━ ▸ 𝗪𝗛𝗬 𝗖𝗟𝗜𝗘𝗡𝗧𝗦 𝗖𝗛𝗢𝗢𝗦𝗘 𝗠𝗘 ━━━━━━━━━━━━━━━━━━━━ ◆ 30+ AI and SaaS applications successfully launched ◆ 12+ projects completed on Upwork with a 100% Job Success Score ◆ 700+ development hours delivered across AI and Full Stack projects ◆ Top Rated freelancer trusted by startups and growing businesses ◆ Products built across Healthcare, EdTech, FinTech, Cybersecurity, Fitness, and SaaS industries ◆ End-to-end ownership from architecture and development to deployment and scaling ◆ Experience building AI products used by thousands of end users ◆ Clean, scalable, and production-ready code designed for long-term growth ◆ Fast communication and proactive problem solving throughout the project lifecycle ◆ Long-term partnerships with clients beyond initial project delivery ━━━━━━━━━━━━━━━━━━━━ ▸ 𝗥𝗘𝗖𝗘𝗡𝗧 𝗪𝗜𝗡𝗦 ━━━━━━━━━━━━━━━━━━━━ ✔ Built an AI business advisor platform for food and beverage companies. ✔ Developed an AI incident response and log analysis system for technical teams. ✔ Created an AI English learning platform serving international students. ✔ Delivered a cybersecurity risk assessment SaaS platform with multi-tenant architecture. ✔ Built a dual-portal fitness SaaS used by coaches and clients for training management. ✔ Developed a gaming marketplace with KYC verification and secure payment processing. ✔ Built AI-powered monitoring dashboards with real-time alerts and analytics. ━━━━━━━━━━━━━━━━━━━━ If you're building an AI startup, scaling an existing product, or struggling with AI features that work in demos but fail in production, I can help. Send me your idea, product, or challenge and I'll help you choose the right technical approach before development even begins. Let's build software that delivers results, not just demos. ➤ 𝗞𝗘𝗬𝗪𝗢𝗥𝗗𝗦 AI Development, Full Stack AI Developer, AI Engineer, Generative AI, Agentic AI, AI Agents, Multi-Agent Systems, OpenAI API, ChatGPT API, Claude API, Gemini API, LangChain Developer, LlamaIndex Developer, RAG Developer, Vector Database, Semantic Search, AI Automa

I build production AI web apps and RAG features that answer fast and ship on time. Ideal for SaaS MVPs and internal tools. Data-heavy dashboards too. Clean APIs. Maintainable code. Faster delivery, with less rework. I'm Bhanu Chauhan, Senior Full-Stack AI Engineer with 7.4 years in the seat. 12,000+ Upwork hours. Top Rated Plus. $100K+ earned across 20+ long-term projects. I've shipped for clients in the US and UK. Canada and Australia as well. I handle design and coding, then deploy end to end. React with TypeScript for clear, maintainable UIs that don't break on release. Python with FastAPI for high throughput REST. Background jobs included. Clean API contracts from day one. PostgreSQL for transactional work or MongoDB for flexible content. AWS for private networks and IAM. Monitored services included. Docker and Kubernetes with CI/CD so updates roll out with low risk. For AI features, I wire OpenAI and LangChain into your product, with retrieval over your docs. I build agents and tool use when it makes sense. I add eval loops and content filters, then expose everything through well documented endpoints and workers. What I can help with: - RAG chat over PDFs. HTML pages too. Knowledge bases as well. - SaaS MVPs with auth and roles. Billing if needed. - Data dashboards with filters and charts. Exports supported. - Backend APIs for partners and internal teams. - AI copilots or chatbots that automate workflows and surface insights. - CI/CD pipelines with Docker images and Kubernetes deploys. How I work: - Quick discovery to lock scope and outcomes. Constraints captured early. - Milestones with clear deliverables and checklists. - Prototype or API spec within 48 to 72 hours. - Weekly demos and written updates. - Clean Git history with readable commits. - Handover docs plus setup guides. Short screen recording on request. Availability: 20 to 30 hours per week. Same day communication. Overlap with US and EU time zones. Send a short brief. I'll reply within 24 hours with a plan and timeline.

I build AI and Python backend systems for SaaS, healthcare, fintech, and data-heavy products. My work focuses on LLM applications, RAG systems, AI agents, FastAPI backends, healthcare AI workflows, voice AI systems, AI copilots, chatbots, and secure API integrations. I have 13,000+ Upwork hours, $300K+ earned, 100% Job Success, and Top Rated status. I focus on building AI systems that are not just impressive in a demo, but stable, secure, scalable, and useful in real production environments. My core work includes: - LLM applications using OpenAI, Claude, Gemini, LangChain, LangGraph, and LlamaIndex - RAG systems using Pinecone, pgvector, Qdrant, Weaviate, and other vector databases - Python backend development with FastAPI, Django, Flask, PostgreSQL, MongoDB, and AWS - AI agents, AI copilots, chatbots, internal assistants, and workflow automation tools - Voice AI systems using Whisper, Twilio, speech-to-text, and real-time backend workflows - Healthcare AI workflows, clinical assistants, medical data handling, EMR/EHR-related integrations - FinTech and data-heavy SaaS platforms involving analytics, reporting, automation, and secure APIs - Authentication, RBAC, logging, background jobs, API architecture, and cloud deployment Many AI projects fail because the backend, data flow, permissions, evaluation logic, and integrations are not properly designed. I focus on those parts early so the system can grow without needing to be rebuilt later. I am a good fit if you need someone who can: - Turn an AI idea into a practical technical architecture - Build a secure Python/FastAPI backend for your AI or SaaS product - Design RAG pipelines around real business, medical, financial, or internal data - Integrate AI into an existing healthcare, fintech, SaaS, or workflow-heavy platform - Improve an unstable AI prototype and make it production-ready - Work directly with your team and communicate clearly without overcomplicating things I can work hands-on as a Python AI backend engineer, and when a project needs broader support, I can also bring in AITIATE/Citrusbug’s AI, SaaS, cloud, QA, and product engineering team. If you are building an AI product and want it done properly, I’d be happy to review your requirements and suggest the best technical direction.

I am a Senior Python Backend Engineer specializing in building scalable, high-performance backend systems for startups and growing companies in the US and Europe. With 5+ years of experience in production environments serving millions of users, I help businesses design and build backend systems that are reliable, scalable, and optimized for real-world traffic and growth. My core focus is backend architecture, distributed systems, and API development, with deep expertise in Python-based frameworks and modern cloud-ready architectures. I have worked across telecom, fintech, marketplaces, and AI-powered platforms, delivering systems where performance, stability, and scalability are critical. I work with founders, CTOs, and engineering teams to design and develop: - Scalable REST APIs and backend systems (FastAPI, Django REST) - Microservices architectures for growing products - High-load distributed systems handling large traffic - Payment, billing, and financial backend systems - Search, ranking, and data-intensive services (Elasticsearch) - Event-driven architectures (Celery, RabbitMQ, Redis) - Telegram bots and automation systems for SaaS products - Backend optimization and legacy system improvements

I build Python backend systems, APIs, and automation workflows using FastAPI and modern Python tools. I help businesses develop scalable backends, integrate APIs, and automate workflows using efficient and production-ready solutions. I am a Python Backend & Automation Engineer specializing in building scalable APIs, backend systems, and workflow automation solutions. I help businesses design and develop reliable backend applications using Python and FastAPI, along with automation systems that improve efficiency and reduce manual work. My core expertise includes: • Python backend development • FastAPI & REST API development • API integration with third-party services • Workflow automation systems • AI-assisted automation workflows (when needed) • Backend architecture and system design I have experience building production-ready APIs and automation workflows that connect systems, process data, and support real business operations. I focus on writing clean, maintainable, and scalable code while ensuring solutions are practical and easy to extend. If you need a developer who can build backend systems and also automate workflows across tools and APIs, I can help.

Backend engineer building production fintech systems live payments, multi-tenant SaaS, API integrations that run 24/7. Currently leading backend on a BNPL platform: FastAPI + PostgreSQL + Redis, processing MTN MoMo payments, Angaza device sync, credit scoring webhooks, React admin dashboard. 300+ tests, Docker/CI/CD, deployed on AWS. What I build: - FastAPI backends with async architecture - Payment integrations (MTN MoMo, PayFast, Stripe) - Multi-tenant SaaS with RBAC and audit logging - Background processing pipelines with retry logic - Docker, AWS deployments, CI/CD infrastructure - React + TypeScript dashboards Stack: Python, FastAPI, PostgreSQL, SQLAlchemy, Redis, Docker, AWS, React, TypeScript I own problems end-to-end - from architecture to deployment. Code that doesn't break at 3 AM. Keywords: FastAPI developer, payment gateway integration, Stripe integration, MTN MoMo integration, webhook handler, idempotent API design, REST API developer, PostgreSQL backend, multi-tenant SaaS, RBAC, background job processing, Docker deployment, AWS EC2, CI/CD, fintech backend engineer, credit scoring API integration, KYC integration, audit logging

You know your industry. You can see the product that should exist. You just need Someone who can build it and lead the build, not wait around for instructions. That's what I do. I'm a full-stack developer who helps non-technical founders in real estate and fintech turn their industry knowledge into a real, finished product. You know the business. I handle the tech decisions and the building. I lead, I move fast, and you don't have to manage me. Top Rated Plus, 100% Job Success, with live products and 5-star reviews. What I've built, start to finish: - A private real-estate lending platform, with exact, traceable money calculations and many investors tracked in one loan. - A live property-transparency platform (5-star) with map search and a document-scanning pipeline. - A tool (5-star, in real use) that pulls company data from the web, scores it with AI, and makes it searchable. - A health-assessment app (5-star) with a scoring system that the admin can adjust. - Real-estate data pipelines (Zillow, LoopNet, Redfin) that cut scraping costs by about 75%. Why I'm a partner, not just a coder: - I take the lead. I turn what your business needs into a clear plan and a shipped product, and I tell you what I'd build and why. - I get the numbers exactly right when money is involved. - I build web scraping and data pipelines that keep working when others break. - I run local AI models (Phi-3, Qwen) in production, not just API calls, to save cost and protect your data. Stack: Python/FastAPI, Next.js/React, PostgreSQL, Celery/Redis, Playwright/Zyte, Stripe, Supabase, OpenAI + local LLMs, deployed on AWS/Vercel/Render. How I work: I lead the build, show you a working demo every week, and explain things in plain language, no jargon. Most MVPs ship in about 4 weeks. If you're a founder who knows your industry and wants a partner to build and ship The product, tell me what you're building and I'll tell you how I'd approach it.

If your backend is slow, your APIs keep breaking under load, or your AI features feel bolted on instead of built in, that's usually where I come in. I build Django and FastAPI backends on AWS for SaaS and AI products that need to stay fast under real user load, not just pass a demo. Most of my work is either fixing slow APIs and deployment bottlenecks or shipping new backend features (REST APIs, async jobs, LLM/RAG integrations) for teams that outgrew their first architecture. I'm a senior Python backend developer based in India, with 8+ years, top-rated, and 100% job success. What I work on day to day: ★ REST APIs and backend services (Django/DRF, FastAPI, Flask when it fits) ★ Cloud deployments on AWS: EC2, S3, RDS, Lambda, Docker, CI/CD pipelines ★ Async and background jobs: Celery, Redis, RabbitMQ for queues, reports, notifications ★ AI and LLM integration: RAG workflows, chatbots, automation pipelines (OpenAI, Gemini, Grok APIs; not just prompt wrappers) ★ Backend refactoring: slow queries, messy codebases, deployments that break every release ★ Microservices where it makes sense: not microservices for the sake of it A few projects I've led or built recently: Astrosure.ai: AI-powered astrology platform from scratch. I led the backend: Django and FastAPI services, birth chart processing, dosha/dasha rules, and the Agastyaa chatbot with LLM integration. Deployed on AWS with Docker and CI/CD on EKS. HerKey (herkey .com): India's largest career platform for women. Built scalable APIs for job matching, session booking, and notifications. Django REST Framework, MongoDB, Elasticsearch, Kubernetes on AWS. We cut incident triage time by around 40% after improving monitoring and deployment flow. Riyaah (riyaah.sa): Beauty e-commerce platform in Saudi Arabia. Backend for product catalog, orders, and payment flows. Django, PostgreSQL, AWS. Before Upwork, I worked with Capgemini (banking/ANZ), Flooid, Keuro Digital, and Bricksteel, mostly backend, team lead, and client-facing delivery. I also run Sparkscribe Technologies for larger or long-term engagements where you need more than one developer. On Upwork you work with me directly. For larger scopes, I may involve senior developers from my company under my technical lead, only with your approval and with me owning architecture and delivery. How I usually work with clients: I keep communication straightforward, regular updates, and clear ETAs, with no disappearing mid-sprint. I've managed small teams (up to 10 devs), done code reviews, and set up CI/CD and monitoring so releases don't turn into firefights. Most of my Upwork clients mention responsiveness and clean delivery in their reviews. If you need someone who can own the backend end-to-end architecture, APIs, cloud, AI integration, and production stability, send me a message with a short description of what you're building. I'll reply with honest thoughts on scope and how I'd approach it.