Hi, I'm Rey.
Full-Stack Software Engineer.
Building scalable backend systems, REST APIs, and high-performance web platforms. I also use AI to assist coding and integrate AI workflows with Claude, MCP tools, and modern automation to move faster without sacrificing quality.
Specialized in Node.js, Spring Boot, Next.js, PostgreSQL, AWS, AI-assisted development, and MCP-powered integrations, you can download my resume here.
Skills & Expertise
Backend Frameworks
NodeJs / Express
Spring Boot
Frontend Frameworks
ReactJs
VueJs
NextJs
NuxtJs
Databases
Relational Databases
MySQL
PostgreSQL
Supabase
NoSQL Databases
MongoDB
Firebase
DynamoDB
Cloud & DevOps
AWS
Vercel
GitHub
Bitbucket
Jira
CICD
Docker
Upstash
Azure DevOps
Projects
Backlog-Buddy (November 2025 - May 2026)
Interact with the client through virtual meetings & feature implementation.
Built dynamic client workflow. Secure multi-tenant architecture with AI-assisted development and MCP-powered integrations for DevOps and automation.
AI Blog Generation (August 2025 - August 2026)
Refactor existing openai api request replace with LangChain4j to handle multi ai providers.
Restructured API orchestration with AI-assisted coding, Claude, and multi-provider AI routing to ensure robust, scalable content generation pipelines.
Map Engine Optimization Report (October 2025 - August 2026)
Migrate from Openai assistant into Openai responses api due to assistant depreciation, and Implement SSE both frontend and backend for real time data updates. Optimize the performance to use only less ram during the process and Investigating and fixing server configuration issues during deployment.
Enable real-time updates and drastically reduced RAM footprint during processing.
Treasure Keyword Search (May 2025 - August 2026)
Interact with the client and understand the specifications provided and make a plan and implement the feature. Investigate for third party APIs that the client requested for integration and manage system deployment.
Engineered scalable scraping architecture using Docker and AWS Batch for heavy process as well as background task.
Search Engine Optimization Keyword Monitoring (November 2024 - August 2026)
Understand the specifications provided, make a plan and implement the feature. Manage the server deployment both staging and production.
Designed end-to-end data pipelines for detailed keyword and site analytic dashboard.
Map Engine Optimization Registration (April 2024 - October 2024)
Interact with the client and understand the specifications provided and make a plan and implement the feature. Investigate for third party APIs that the client requested for integration and manage system deployment.
Engineered scalable scraping architecture using Docker and AWS Batch for heavy process as well as background task.
Japanese Learning (March 2023 - February 2024)
Implement the UI from the design provided by the client, and connect to the backend api and fixes some bugs during the connection.
Manage frontend and backend connections to interact perfectly.
Services
Full-Stack Web Developer
Build high performance APIs and AI-assisted product workflows using Claude, MCP integrations, and modern tooling.
Backend Development
Build scalable, secure, and maintainable server-side applications using modern frameworks and best practices.
Interactive Frontend Design
Create responsive, user-friendly UI/UX
Database Architecture
Optimize data storage, security and migration
REST API Development
Design and develop fast, reliable RESTful APIs that integrate seamlessly with web, mobile, and third-party services.
Real-Time Applications
Develop real-time features such as live chat, notifications, activity feeds, and collaborative experiences using WebSockets.
Cloud & AWS Deployment
Deploy and manage applications on AWS with scalable infrastructure, secure networking, and high availability.
CI/CD Automation
Automate building, testing, and deployment pipelines to deliver software faster and more reliably.
Authentication & Authorization
Implement secure user authentication, role-based access control, and OAuth integrations to protect applications.
System Integration
Connect applications with external APIs, payment gateways, cloud services, and business platforms.
Performance Optimization
Improve application speed, scalability, and resource efficiency through profiling and optimization techniques.
Microservices Development
Build modular, independently deployable services that improve scalability, maintainability, and system resilience.
Professional Experience
Software Engineer | Hipe Japan, Philippines
October 2022 - August 2026Build and maintain scalable backend APIs using Java Spring Boot and Node.js. Design optimized databases, develop responsive front-end features with React, Vue, and Nuxt (Redux, Pinia), and integrate AI services such as Claude, OpenAI, DataForSEO, AWS, and GCP in Agile environments while using AI to assist coding and accelerate delivery.
Software Engineer | ITFrontdoor, Netherlands
November 2025 - April 2026Developed an AI-powered chat application using Next.js and Supabase, integrating Claude, AI SDK, and MCP tools to connect and interact with Azure DevOps services. Designed real-time messaging features, implemented backend logic, and built secure integrations for seamless DevOps automation.
Hire Me
I'd love to hear from you.
Thank you!
I'll reply within 24 hours.