David Mid i4 59

Architected and delivered production AI-powered business applications using Python, Node.js, LLM APIs, React, and cloud infrastructure. Designed intelligent automation systems with LLM agents, RAG pipelines, tool/function calling, structured outputs, and multi-step workflows with explicit validation, error handling, fallback mechanisms, and human review paths. Built graph-based memory using Neo4j plus vector databases, and developed secure REST APIs and enterprise integrations using OAuth, JSON, and webhooks. Implemented AI workflow evaluation to measure accuracy, reliability, latency, and cost; added AI guardrails for user input, model output, tool execution, and sensitive business data. Developed relational data models in PostgreSQL, built UI interfaces for AI-powered apps in React/TypeScript, and supported asynchronous/background processing for AI workflows. Contributed to production debugging, root-cause analysis across frontend/backend/AI/data layers, established coding standards

Designed and developed enterprise AI and data-processing applications using Python, Node.js, Java, React, and cloud technologies. Built production AI and data-processing workflows leveraging LLM APIs and intelligent automation. Delivered RAG systems for enterprise document processing and knowledge retrieval, along with API-first architectures supporting internal apps and third-party integrations. Developed REST APIs and backend services using Python/Node.js, designed relational database schemas and optimized SQL queries, and implemented secure authentication/authorization flows using API security patterns. Integrated external APIs using OAuth, JSON, webhooks, and token-based authentication; built AI-powered front-end interfaces in React/TypeScript. Added automated testing across backend and frontend services, containerized development with Docker, supported Kubernetes production environments, and implemented CI/CD pipelines for automated testing and deployment. Investigated production

Developed enterprise web applications using PHP, Laravel, JavaScript, React, Angular, Node.js, Python, and Java. Built backend systems following MVC and service-oriented architecture patterns, developed RESTful APIs using Laravel and Node.js, and maintained MySQL databases using Eloquent ORM with migrations, relationships, indexes, and optimized SQL queries. Created reusable Laravel services (controllers, middleware, jobs, events, API resources) and integrated external business systems via REST APIs with JSON, OAuth, and webhooks. Built front-end applications in React/Angular/JavaScript/TypeScript, and developed business automation workflows connecting internal applications and external platforms. Implemented secure authentication/authorization, integrated payment gateways, CRM systems, messaging platforms, and other third-party services. Containerized deployments with Docker, supported cloud deployments and production systems, handled debugging and root-cause analysis, participated i