I'm a Senior Full-Stack Software Engineer with 7+ years of experience building scalable web applications for startups, enterprise clients, and product-driven teams.

I specialize in React, Next.js, Node.js, Java, GraphQL, PostgreSQL, and cloud-based systems, with a strong focus on performance, clean architecture, and user-centered product development.

I’ve worked on AI-powered workflows, enterprise order management systems, Microsoft Teams integrations, GraphQL optimization, and developer productivity improvements using modern AI tools.

• 🧠 Build AI-powered product features using OpenAI APIs, prompt engineering, and contextual conversation workflows
• ⚡ Improve application performance, including reducing GraphQL execution time by 60%
• 🏗️ Design scalable full-stack architectures with React, Node.js, Java, GraphQL, and PostgreSQL
• 🔄 Build integrations with platforms like Microsoft Teams, Graph API, RabbitMQ, and OpenAI
• 👥 Collaborate cross-functionally with Product, Design, QA, and Engineering teams
• 🧰 Use AI-assisted development workflows with tools like Cursor and Claude to accelerate delivery, refactoring, testing, and code reviews

Languages
JavaScript, TypeScript, Java, PHP, SQL

Frontend
React, Next.js, Redux, HTML5, CSS3, Material UI, Styled Components

Backend
Node.js, Express, Java Spring Boot, REST APIs, GraphQL

Databases
PostgreSQL, MySQL

Cloud & DevOps
Docker, AWS, Firebase, Azure DevOps, CI/CD, Jenkins

Testing
Jest, Mocha, Chai, JUnit, Mockito

Messaging & Integrations
RabbitMQ, Microsoft Teams API, Microsoft Bot Framework, Graph API, OpenAI API

Tools
Git, GitHub, Jira, Webpack, Cursor, Claude

Led architecture improvements for an OpenAI-powered conversation workflow, improving prompt context handling by including full conversation history and increasing the quality and consistency of AI-generated responses.

Designed and implemented a Microsoft Teams bot using Microsoft Bot Framework and Graph API to enable real-time product notifications and improve user engagement.

Reduced GraphQL query execution time by 60% by designing and implementing an optimized recursive data-fetching strategy.

Contributed to an Order Management System for HEB, building scalable workflows for order processing, status updates, and asynchronous backend communication using RabbitMQ.

Integrated AI-assisted workflows using Cursor and Claude to speed up code generation, refactoring, debugging, testing, and code reviews.

• 🇲🇽 Based in Mexico
• 🌍 Open to remote US contractor roles
• 💬 Fluent in English and Spanish
• 🧑‍💻 Passionate about scalable systems, AI-assisted development, and practical product engineering
• 🤝 I enjoy mentoring developers, improving team workflows, and solving real-world business problems with software

• Email: alonso.gtb@gmail.com
• LinkedIn: linkedin.com/in/alonsogtb

✨ Thanks for visiting my profile — let’s build something useful, scalable, and impactful.