Lana L.

"Your SaaS platform is 99% done." Real-time data doesn't work. API integrations fail under load. AI functionality was added but never connected to real data. Works for 10 users. Breaks at 1,000. The full-stack developer is gone. The pre-deployment audit says: start over. My Clients never tell this story. ⭐ Top Rated Plus ⭐ 100% Job Success ⭐ 92% client retention ⭐ 8 years in the game ⭐ 3M+ unique users in production ⭐ 200K+ monthly active users ⭐ 37+ AI-powered solutions I'm a full-stack developer specializing in SaaS platform development, Node.js, Python, and API integration. I build healthcare platforms, AI assistants, AI automation platforms, fintech systems, B2B SaaS applications, and enterprise integrations. Multi-tenant SaaS platforms, backend APIs, cloud infrastructure, and AI integrations using OpenAI API, Claude API, LangChain, and RAG architectures. Every SaaS platform I deliver is production-ready - scalable from day one, not rebuilt in six months. Here's how I prevent each of those: 🔴 "99% done" I define done as production-ready. A SaaS platform isn't finished until it's load-tested, edge cases are handled, and your team can maintain it. No surprises after handover. 📡 Real-time data I architect the real-time data layer from the start, not as an afterthought. WebSockets, event-driven systems, live dashboards that actually update when your data does. 🔌 API integrations I build every API integration with error handling, retry logic, rate limiting, and monitoring built in. When a third-party updates their endpoints, your SaaS platform keeps running. 🤖 AI functionality I connect AI to your actual business data, not a feature floating above your product. RAG systems, OpenAI API, Claude API, LangChain - embedded in the data layer where it creates real value. 📈 Scalability Every SaaS platform I build is designed for 10x your current load from day one. Multi-tenant architecture, database optimization, cloud infrastructure that grows without a rebuild. 👤 The full-stack developer disappears 92% of my clients return for the next project. Full documentation, knowledge transfer, and ongoing support are part of how I work. ✅ Pre-deployment — I deliver code that passes any audit. Architecture reviews, performance testing, and security checks are part of the build, not a last-minute discovery. What I build: 🏗️ SaaS Platforms Multi-tenant architecture, subscription management, role-based access control, B2B SaaS applications 🔌 API & Backend Development Node.js, NestJS, Python, FastAPI, REST API, GraphQL, microservices, API integration with third-party services 🤖 AI Integration RAG systems, AI agents, OpenAI API, Claude API, LangChain, LLM integration, AI-powered automation ☁️ Cloud Infrastructure AWS, Docker, Kubernetes, serverless, cost-effective high-performance architecture 📊 Data-Driven Dashboards Real-time analytics, financial reporting, BI migration, data visualization, Customer 360 🔄 Automation & Workflows WhatsApp Commerce platforms, n8n, Zapier, custom automation pipelines 🛡️ Enterprise Integrations CRM/ERP, Salesforce, HubSpot, healthcare platforms, fintech systems, Stripe ⚙️ Tech Stack: NestJS, FastAPI, React, Next.js, TypeScript · AWS, PostgreSQL, MongoDB, Redis What's the product? Tell me the outcome and I'll architect the path to get there. full-stack developer · full stack development · SaaS platform · SaaS developer · SaaS platform development · B2B SaaS · multi-tenant SaaS · multi-tenant architecture · AI SaaS · Node.js developer · Node.js backend · NestJS developer · Python developer · Python backend · FastAPI developer · React developer · Next.js developer · TypeScript developer · backend developer · backend development · API development · REST API · GraphQL API · API integration · webhook integration · payment integration · web application · web application development · scalable web application · SaaS application · SaaS MVP · cloud infrastructure · AWS · Docker · Kubernetes · serverless · microservices · AI integration · AI-powered SaaS · OpenAI API · Claude API · Anthropic · LangChain · RAG · AI agents · LLM integration · AI chatbot · automation · workflow automation · n8n · Zapier · data platform · real-time dashboard · data visualization · PostgreSQL · MongoDB · Redis · CRM integration · ERP integration · HubSpot · Salesforce · healthcare platform · fintech · IoT platform · long-term partnership · ongoing development · enterprise web development · full-stack engineer · software engineer · payment gateway · subscription management · role-based access control · multi-tenant · Claude Code · full-stack AI engineer · SaaS development company · backend development services