**I specialize in "swapping engines mid-flight."** As the Principal Architect of **Fast Dog Coding, LLC**, I help enterprise organizations and high-growth startups modernize high-stakes legacy systems without interrupting service. My specialty is replacing aging backends (like IBM Domino) with modern Node.js and MongoDB/PostgreSQL stacks while maintaining **100% API parity** for global user bases. **Why work with me:** * **Scale-Proven Experience:** I have architected and migrated systems serving up to **80,000 global users**. * **Agentic AI Implementation:** Beyond standard full-stack work, I build production-grade AI tools, including **RAG-based assistants** and automated **lead-scoring engines** using OpenAI and vector stores. * **Technical Stability:** My background includes building real-time C++ server components for email compliance and data-leakage prevention (DLP), ensuring a "security-first" mindset in every web application. * **Ownership-Driven:** As a 1099 contractor, I don't just "write code"—I take full ownership of the lifecycle, from architectural design to cloud deployment on **AWS or IBM Cloud**. **Technical Toolkit:** * **Languages/Runtime:** Node.js, TypeScript, JavaScript (12+ yrs), C++. * **Frontend:** Angular (v19), D3.js. * **Data:** PostgreSQL (Sequelize), MongoDB (Aggregation Pipelines), IBM Cloudant. * **AI/LLM:** OpenAI API, Vector Stores, Retrieval-Augmented Generation (RAG). I am currently seeking **remote-first** contracts where performance, stability, and pragmatic technical debt management are critical to project success.…**I specialize in "swapping engines mid-flight."** As the Principal Architect of **Fast Dog Coding, LLC**, I help enterprise organizations and high-growth startups modernize high-stakes legacy systems without interrupting service. My specialty is replacing aging backends (like IBM Domino) with modern Node.js and MongoDB/PostgreSQL stacks while maintaining **100% API parity** for global user bases. **Why work with me:** * **Scale-Proven Experience:** I have architected and migrated systems serving up to **80,000 global users**. * **Agentic AI Implementation:** Beyond standard full-stack work, I build production-grade AI tools, including **RAG-based assistants** and automated **lead-scoring engines** using OpenAI and vector stores. * **Technical Stability:** My background includes building real-time C++ server components for email compliance and data-leakage prevention (DLP), ensuring a "security-first" mindset in every web application. * **Ownership-Driven:** As a 1099 contractor, I don't just "write code"—I take full ownership of the lifecycle, from architectural design to cloud deployment on **AWS or IBM Cloud**. **Technical Toolkit:** * **Languages/Runtime:** Node.js, TypeScript, JavaScript (12+ yrs), C++. * **Frontend:** Angular (v19), D3.js. * **Data:** PostgreSQL (Sequelize), MongoDB (Aggregation Pipelines), IBM Cloudant. * **AI/LLM:** OpenAI API, Vector Stores, Retrieval-Augmented Generation (RAG). I am currently seeking **remote-first** contracts where performance, stability, and pragmatic technical debt management are critical to project success.WWWW…