Hello — I'm

Adrian Madrid

Senior Software Engineer

Senior Software Engineer with 13+ years of experience designing, developing, and delivering scalable full-stack applications, distributed systems, and AI-powered software solutions. Proven expertise across frontend, backend, cloud infrastructure, and modern AI technologies.

Specialized in Generative AI, LLMs, RAG, semantic search, and intelligent automation using OpenAI APIs, LangChain, LangGraph, vector databases, and prompt engineering — integrating AI into production systems while maintaining scalability, security, and high availability.

Recognized for leading complex engineering initiatives from architecture through deployment, collaborating with cross-functional teams, mentoring engineers, and delivering high-quality software in agile environments.

Top Skills

OpenAI API
LangChain / RAG
React
Next.js
TypeScript
JavaScript
Redux Toolkit
Tailwind CSS
Shadcn UI
HTML5
CSS3
Node.js
Express.js
Python
REST APIs
GraphQL
WebSockets
Laravel
PostgreSQL
MySQL
Redis
MongoDB
Prisma
AWS
Azure
Docker
GitHub Actions
Git
JWT / OAuth
Jest
Playwright
ESLint
Prettier

Projects

Lumber Marketplace, AI-Powered Platform
- next.js
- react
- node.js
- openai
- postgresql
- typescript
Designed and delivered production-grade Generative AI features using OpenAI APIs, LangChain, and RAG pipelines with pgvector to improve semantic search, product categorization, and buyer–seller matching across the marketplace.
Lumber Marketplace, AI-Powered Platform
- next.js
- react
- node.js
- openai
- postgresql
- typescript
Designed and delivered production-grade Generative AI features using OpenAI APIs, LangChain, and RAG pipelines with pgvector to improve semantic search, product categorization, and buyer–seller matching across the marketplace.
ShipStation, Order Tracking Dashboard
- react
- next.js
- node.js
- openai
- postgresql
- docker
Built a real-time shipment tracking dashboard used by 130,000+ merchants with Next.js, Zustand, and React Query. Integrated AI-powered support automation and semantic search using OpenAI APIs, LangChain, and pgvector.
ShipStation, Order Tracking Dashboard
- react
- next.js
- node.js
- openai
- postgresql
- docker
Built a real-time shipment tracking dashboard used by 130,000+ merchants with Next.js, Zustand, and React Query. Integrated AI-powered support automation and semantic search using OpenAI APIs, LangChain, and pgvector.

Experience

Designed and developed AI-powered marketplace features using React, Next.js, TypeScript, Node.js, and PostgreSQL to improve product discovery and user experience.
Built production-ready Generative AI solutions using OpenAI APIs, LangChain, and prompt engineering to automate product categorization, intelligent recommendations, and customer support workflows.
Architected Retrieval-Augmented Generation (RAG) pipelines leveraging PostgreSQL, pgvector, vector embeddings, and structured business data to improve semantic search and buyer–seller matching accuracy.
Designed intelligent search capabilities combining vector similarity search with traditional filtering to deliver more relevant marketplace results.
Implemented AI safety mechanisms, validation pipelines, and fallback strategies to ensure reliable and predictable LLM responses in production environments.
Developed secure REST APIs and backend services supporting AI-assisted workflows, search, product management, and marketplace operations.
Optimized frontend rendering, API performance, and database queries to improve responsiveness for AI-assisted user interactions.

Designed and developed a real-time shipment tracking and management dashboard used by 130,000+ merchants using React, Next.js, and Node.js.
Built scalable frontend architecture with advanced state management (Zustand, React Query) to handle high-frequency updates and real-time data synchronization.
Developed AI-powered automation workflows using OpenAI APIs and LangChain to improve customer support efficiency and reduce manual ticket handling.
Implemented semantic search capabilities using PostgreSQL and pgvector to improve ticket resolution accuracy and knowledge retrieval.
Designed and integrated LLM-based features for support automation, query classification, and intelligent response generation.
Built secure RESTful APIs and backend services supporting shipment tracking, user management, and AI-assisted workflows.
Implemented authentication and authorization systems using OAuth 2.0, JWT, and NextAuth.js.

Migrated legacy React application to Next.js, improving performance, reducing page load time by 25%, and enhancing SEO and conversion metrics.
Developed scalable frontend architecture using React, Next.js, Redux Toolkit, and Apollo Client for a large-scale e-commerce platform.
Built data-driven product features supporting personalization, search optimization, and AI-assisted product recommendations.
Contributed to backend services using Node.js, GraphQL, and Prisma to support product catalog, search, and user interaction systems.
Implemented internationalization (i18next, FormatJS) to support multi-region and multilingual e-commerce experiences.
Improved frontend performance through SSR optimization, code splitting, lazy loading, and rendering improvements.
Enhanced application reliability through testing (Jest, Cypress) and production debugging.

Designed and developed full-stack e-commerce features using React, Next.js, Node.js, and Redux, supporting scalable customer-facing applications.
Architected and implemented backend services using Express.js and NestJS, supporting modular and maintainable microservices-based system design.
Integrated payment processing systems including Stripe, PayPal, and Plaid, ensuring secure, reliable, and compliant financial transaction flows.
Built and maintained cloud infrastructure on AWS using EC2, S3, and related services, focusing on scalability, availability, and performance.
Containerized applications using Docker and orchestrated deployments using Kubernetes for scalable production environments.
Developed CI/CD pipelines using AWS CodePipeline, CodeBuild, and Terraform to automate build, test, and deployment workflows.
Improved system reliability through automated testing strategies, including unit and integration testing using Jest.

Developed and maintained healthcare applications in a regulated environment using Vue.js, Django, and FastAPI with a focus on security and reliability.
Built and supported HIPAA-compliant application features with emphasis on data security, access control, and system reliability.
Re-architected monolithic backend systems into distributed microservices using AWS Lambda and Serverless Framework.
Designed and implemented real-time communication features using WebSockets and MQTT for event-driven healthcare workflows.
Built data visualization dashboards using Vue.js, Chart.js, and D3.js to support operational and clinical data insights.
Managed and deployed cloud infrastructure on AWS and Azure, ensuring high availability and secure system operations.
Implemented authentication and role-based access control mechanisms to enforce secure data access in healthcare systems.

Developed a scalable hotel booking platform using Laravel, jQuery, and Bootstrap, supporting core reservation and user management workflows.
Implemented search and discovery features using Elasticsearch to improve hotel and listing search performance and relevance.
Integrated geolocation-based services using Google Maps API to enable location-aware search and booking functionality.
Built real-time booking notifications and messaging features using Pusher and Firebase for improved user engagement.
Designed and developed backend APIs to support booking workflows, user authentication, and reservation management.
Optimized database queries and backend logic to improve application performance and response times.