David G.

🚀 SaaS Development | 🤖 AI Agents | ⚡ n8n Automation | 📱 Mobile Apps | 💻 Full Stack Development | 🧠 OpenAI Integration | 🚀 MVP Development 👋 Hi, I'm David, a Senior Full Stack Developer based in Washington, DC, USA. With 12+ years of software development experience, I help startups, founders, and businesses build scalable SaaS platforms, AI-powered products, mobile applications, MVPs, and custom software solutions. Whether you're validating a new startup idea, launching a SaaS product, automating workflows with AI, or building a mobile application from the ground up, I can help you turn your vision into a production-ready product. I focus on delivering clean architecture, scalable systems, excellent user experiences, and solutions that create real business value. 𝐖𝐇𝐀𝐓 𝐈 𝐂𝐀𝐍 𝐇𝐄𝐋𝐏 𝐘𝐎𝐔 𝐁𝐔𝐈𝐋𝐃 🚀 𝐒𝐀𝐀𝐒 𝐏𝐋𝐀𝐓𝐅𝐎𝐑𝐌𝐒 Build scalable SaaS applications with multi-tenant architecture, secure authentication, subscription billing, user management, analytics dashboards, and cloud-ready infrastructure. 🤖 𝐀𝐈 𝐀𝐆𝐄𝐍𝐓𝐒 & 𝐀𝐔𝐓𝐎𝐌𝐀𝐓𝐈𝐎𝐍 Create intelligent AI agents and automated workflows using OpenAI, n8n, and modern automation tools to reduce manual work and increase operational efficiency. 🧠 𝐀𝐈-𝐏𝐎𝐖𝐄𝐑𝐄𝐃 𝐀𝐏𝐏𝐋𝐈𝐂𝐀𝐓𝐈𝐎𝐍𝐒 Develop AI chatbots, AI assistants, customer support systems, knowledge bases, content generation tools, and custom AI-powered business solutions. 📱 𝐌𝐎𝐁𝐈𝐋𝐄 𝐀𝐏𝐏𝐋𝐈𝐂𝐀𝐓𝐈𝐎𝐍𝐒 Build modern iOS and Android applications with intuitive user experiences, scalable backend systems, real-time functionality, and secure integrations. 💻 𝐅𝐔𝐋𝐋 𝐒𝐓𝐀𝐂𝐊 𝐖𝐄𝐁 𝐀𝐏𝐏𝐋𝐈𝐂𝐀𝐓𝐈𝐎𝐍𝐒 Develop responsive, high-performance web applications with modern frontends, secure APIs, scalable databases, and maintainable architecture. 🚀 𝐌𝐕𝐏 𝐃𝐄𝐕𝐄𝐋𝐎𝐏𝐌𝐄𝐍𝐓 Launch quickly with a production-ready MVP designed to validate your idea, attract early users, and establish a strong foundation for future growth. 🔗 𝐀𝐏𝐈 𝐃𝐄𝐕𝐄𝐋𝐎𝐏𝐌𝐄𝐍𝐓 & 𝐈𝐍𝐓𝐄𝐆𝐑𝐀𝐓𝐈𝐎𝐍𝐒 Build secure APIs and integrate payment gateways, CRMs, third-party services, business tools, and cloud platforms. 𝐓𝐄𝐂𝐇 𝐒𝐓𝐀𝐂𝐊 🎨 𝐅𝐑𝐎𝐍𝐓𝐄𝐍𝐃 𝐃𝐄𝐕𝐄𝐋𝐎𝐏𝐌𝐄𝐍𝐓 • React.js • Next.js • TypeScript • JavaScript • Tailwind CSS • Material UI ⚙️ 𝐁𝐀𝐂𝐊𝐄𝐍𝐃 𝐃𝐄𝐕𝐄𝐋𝐎𝐏𝐌𝐄𝐍𝐓 • Node.js • Express.js • NestJS • PHP • Laravel • Python • FastAPI 📱 𝐌𝐎𝐁𝐈𝐋𝐄 𝐃𝐄𝐕𝐄𝐋𝐎𝐏𝐌𝐄𝐍𝐓 • React Native • Flutter 🗄️ 𝐃𝐀𝐓𝐀𝐁𝐀𝐒𝐄𝐒 • PostgreSQL • MySQL • MongoDB • Redis • Firebase • Supabase ☁️ 𝐂𝐋𝐎𝐔𝐃 & 𝐃𝐄𝐕𝐎𝐏𝐒 • AWS • Docker • CI/CD Pipelines • GitHub Actions • Linux Servers • Vercel 𝐀𝐈 & 𝐀𝐔𝐓𝐎𝐌𝐀𝐓𝐈𝐎𝐍 𝐄𝐗𝐏𝐄𝐑𝐓𝐈𝐒𝐄 🤖 OpenAI API Integration ⚡ n8n Workflow Automation 🧠 AI Agents & AI Assistants 🔍 RAG (Retrieval-Augmented Generation) 💬 AI Chatbots 📚 Knowledge Base Systems 🔗 API Automation 📊 AI-Powered Business Workflows 🚀 Process Optimization & Automation 𝐖𝐇𝐘 𝐂𝐋𝐈𝐄𝐍𝐓𝐒 𝐖𝐎𝐑𝐊 𝐖𝐈𝐓𝐇 𝐌𝐄 ✅ 𝐄𝐍𝐃-𝐓𝐎-𝐄𝐍𝐃 𝐏𝐑𝐎𝐃𝐔𝐂𝐓 𝐃𝐄𝐕𝐄𝐋𝐎𝐏𝐌𝐄𝐍𝐓 From planning and architecture to deployment and post-launch support, I manage the complete development lifecycle. ✅ 𝐁𝐔𝐒𝐈𝐍𝐄𝐒𝐒-𝐅𝐎𝐂𝐔𝐒𝐄𝐃 𝐒𝐎𝐋𝐔𝐓𝐈𝐎𝐍𝐒 I focus on building products that solve real business problems, improve efficiency, and support growth. ✅ 𝐒𝐂𝐀𝐋𝐀𝐁𝐋𝐄 𝐀𝐑𝐂𝐇𝐈𝐓𝐄𝐂𝐓𝐔𝐑𝐄 Applications are designed for performance, maintainability, security, and future expansion. ✅ 𝐂𝐋𝐄𝐀𝐑 𝐂𝐎𝐌𝐌𝐔𝐍𝐈𝐂𝐀𝐓𝐈𝐎𝐍 Transparent updates, realistic timelines, and proactive collaboration throughout every project. ✅ 𝐐𝐔𝐀𝐋𝐈𝐓𝐘 & 𝐑𝐄𝐋𝐈𝐀𝐁𝐈𝐋𝐈𝐓𝐘 Clean code, robust architecture, and attention to detail ensure long-term product success. 𝐏𝐑𝐎𝐉𝐄𝐂𝐓𝐒 𝐈 𝐋𝐎𝐕𝐄 𝐖𝐎𝐑𝐊𝐈𝐍𝐆 𝐎𝐍 🚀 Startup MVPs ☁️ SaaS Platforms 🤖 AI Agents & Automation 📱 Mobile Applications 🧠 AI-Powered Products 📊 Admin Dashboards 💳 Subscription & Payment Systems 🏢 Internal Business Tools 🔗 API Integrations ⚡ Business Process Automation 𝐋𝐄𝐓'𝐒 𝐁𝐔𝐈𝐋𝐃 𝐒𝐎𝐌𝐄𝐓𝐇𝐈𝐍𝐆 𝐆𝐑𝐄𝐀𝐓 If you're looking for a developer who can combine Full Stack Development, Mobile Apps, SaaS, AI Agents, and Automation under one roof, I'd love to hear about your project. Didn't meet expectations? Full refund, no questions asked.