Senior Full-Stack Software Engineer

Carlo Flores

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At a Glance

What I do

Senior full-stack software engineer building and modernizing SaaS platforms, business-critical systems, and APIs - from architecture and database design through deployment and production operations.

Career Highlights

  • 8+ years delivering production software across SaaS, education, finance, travel, and business operations.
  • Shipped 10+ production applications, including platforms supporting 7,000+ students and infrastructure processing 14,000 SMS messages daily.
  • Improved API performance by approximately 50% through a Node.js-to-FastAPI modernization.
  • Reduced database and infrastructure costs by approximately 20% through cloud and data-layer migration.

Core Expertise

Backend: Laravel, PHP, Node.js, Express.js, Python, FastAPI, REST APIs

Frontend: Vue.js, Nuxt.js, React.js, Next.js, TypeScript, JavaScript

Data and Infrastructure: PostgreSQL, MySQL, Redis, Docker, Supabase, Linux

Continue to full resume

Professional Summary

Senior full-stack engineer and product engineer with 8+ years of experience designing, building, and shipping SaaS platforms, business systems, REST APIs, and AI-enabled applications. Strong background in Laravel, Vue.js, Nuxt.js, FastAPI, Supabase, Docker, MySQL, and PostgreSQL across education, healthcare, communications, finance, travel, logistics, and restaurant operations. Known for owning architecture, translating business requirements into production systems, improving performance, reducing infrastructure cost, and delivering software products that solve real operational problems.

Key Achievements

  • 8+ years of professional full-stack software development experience.
  • Built and launched 10+ production business systems and SaaS products.
  • Improved ButFor API performance by approximately 50% through backend modernization.
  • Reduced ButFor infrastructure costs by approximately 20% through database and cloud migration.
  • Built Diocese of Antipolo school platform features supporting over 7,000 students.
  • Built TxtFlow for Diocese of Antipolo to reduce SMS costs, sending roughly 14,000 messages per day.
  • Grew PulsePrep to a peak of 250+ active users.
  • Founded and shipped product platforms including PulsePrep (inactive), VetOps, TxtFlow, and KitchFlow.

Core Skills

  • SaaS Development
  • Backend Engineering
  • API Design
  • System Architecture
  • AI Integration
  • Offline-first Applications
  • Performance Optimization
  • Product Ownership
  • Laravel
  • Vue.js
  • FastAPI
  • Nuxt.js
  • Flutter
  • Node.js
  • Express.js
  • NestJS
  • Python
  • PHP
  • JavaScript
  • TypeScript
  • Supabase
  • Docker
  • Redis
  • PostgreSQL
  • MySQL
  • Vercel
  • React.js
  • React Native
  • Git

Click a skill to filter experience and projects

Languages

PHP , JavaScript , TypeScript , Python

Frameworks

Laravel , Vue.js , Nuxt.js , React.js , React Native , Node.js , Express.js , FastAPI , Flutter , NestJS

Databases

MySQL , PostgreSQL , Redis , Supabase

Infrastructure

Docker , Vercel , Git , Production Deployments

Architecture and AI

REST APIs , System Design , Database Design , Prompt Engineering , OpenAI API

Featured Projects

PulsePrep (Inactive)

AI-powered nursing licensure review platform with adaptive exams, AI-generated questions, learner insights, and real-time progress tracking, peaking at 250+ active users.

Business Impact: Improved review operations by combining assessment, analytics, and engagement workflows in one platform.

Technologies: Nuxt.js, TypeScript, Supabase, PostgreSQL, OpenAI API, AI Integration, Docker, Vercel, System Design

VetOps

Link: https://try.vetops.me

Veterinary management SaaS platform supporting appointments, patient records, billing, inventory, digital vaccine tracking, and client-facing workflows.

Business Impact: Used in live clinic operations to digitize workflows and reduce manual administrative work.

Technologies: Vue.js, TypeScript, Supabase, PostgreSQL, Business Systems Development, Docker, Vercel, System Design

TxtFlow

Android-based SMS gateway platform for local high-volume messaging and campaign delivery without depending on third-party SMS APIs.

Business Impact: Reduced SMS provider dependency and enabled businesses to run messaging workflows from Android devices.

Technologies: Flutter, TypeScript, Android, SMS Gateway, Offline-first Applications, Vercel, System Design

KitchFlow

Link: https://www.kitchflow.xyz/

Restaurant management system with POS, inventory, staff management, reporting, offline-first workflows, and kitchen/dining print operations.

Business Impact: Used in live restaurant operations and built for real constraints including unstable connectivity, low-bandwidth usage, and operational speed.

Technologies: Vue.js, TypeScript, FastAPI, PostgreSQL, Redis, Docker, Vercel

Experience

Founder / Lead Engineer - SaaS & Platform Systems

Self-Directed Products

Self-employed - Remote

Jan 2025 - Present

Founded and led product development for SaaS platforms solving operational problems across education, healthcare, communications, and business workflows.

PulsePrep (Inactive) - AI Learning Platform

  • Architected and shipped adaptive exam platform with AI-generated questions, learner insights, and engagement-driven study workflows.
  • Implemented real-time progress tracking and analytics for hundreds of students.
  • Owned product strategy, UX, database design, API design, and production delivery.

VetOps - Veterinary Management System

  • Architected and developed veterinary SaaS platform supporting appointments, patient records, billing, inventory, and digital vaccine tracking.
  • Built client-facing tools to reduce manual clinic communication and improve operational visibility.
  • Designed scalable architecture for small-to-medium veterinary clinics.

TxtFlow - SMS Gateway Platform

  • Built Android-based SMS gateway for high-volume local messaging and campaign workflows.
  • Reduced reliance on third-party SMS providers by using native device messaging capabilities.

Technologies: Nuxt.js, Vue.js, TypeScript, Supabase, PostgreSQL, OpenAI API, Prompt Engineering, AI Integration, Docker, Vercel, Git, System Design, Database Design, SaaS Development, System Architecture

Lead Engineer

KitchFlow

Contract - Manila, Philippines

Nov 2025 - Feb 2026

Designed and developed a production-ready restaurant management platform for real-world hospitality operations.

  • Architected and implemented POS, inventory, staff management, and reporting modules for restaurant operations.
  • Designed offline-first architecture for unstable network environments and low-bandwidth usage.
  • Implemented real-time synchronization, kitchen printing, and dining print workflows.
  • Translated restaurant operational constraints into practical software workflows.
  • Owned product architecture, backend APIs, performance optimization, and deployment planning.

Technologies: Vue.js, TypeScript, FastAPI, Python, PostgreSQL, Redis, Docker, Vercel, Git, System Design, Database Design, Ubuntu, Offline-first Applications, REST APIs

Full Stack Engineer

Ali Shubber

Project-based - Remote

Feb 2025 - May 2025

Built AI-enabled education workflows and chatbot features for a project-based learning platform.

  • Designed and developed an AI-integrated educational platform with backend APIs, database workflows, and deployment setup.
  • Built an AI chatbot workflow using RAG to retrieve trained knowledge and generate contextual responses.
  • Integrated OpenAI-powered features with Supabase-backed data storage and Express.js API endpoints.
  • Deployed and iterated the platform on Vercel for fast delivery and stakeholder review.

AI Integrated Educational Platform

  • Developed platform workflows for AI-assisted learning, content interaction, and user-facing education features.
  • Implemented Node.js and Express.js services with Supabase data workflows and Vercel deployment.

AI Chatbot with RAG Training

  • Built retrieval-augmented chatbot functionality that used trained source material to produce more relevant answers.
  • Connected OpenAI API responses to application data, prompt workflows, and user interaction flows.

Technologies: Node.js, Express.js, TypeScript, Vercel, Supabase, RAG, AI Integration, OpenAI API, REST APIs, Git, System Design, Database Design

Senior Software Engineer

ButFor

Full-time - Remote

Aug 2024 - Aug 2025

Led backend modernization, system architecture, and cloud infrastructure improvements for a production claims platform.

  • Migrated Node.js APIs to FastAPI, improving API performance by approximately 50%.
  • Migrated MySQL infrastructure to Supabase, reducing infrastructure costs by approximately 20%.
  • Led system architecture decisions, scalability planning, and backend modernization strategy.
  • Containerized applications using Docker and managed production deployments.
  • Improved cloud infrastructure reliability, maintainability, and engineering workflow.

Technologies: Node.js, Express.js, TypeScript, Python, FastAPI, Docker, Supabase, PostgreSQL, MySQL, REST APIs, Git, System Design, Database Design, System Architecture, Cloud Infrastructure

Full Stack Engineer

Remote Work

Multi-client freelance - Remote

Dec 2020 - Mar 2024

Delivered multiple remote client projects across marketplaces, ticketing, streaming, email integrations, crypto integrations, API work, and website development.

  • Built and maintained full-stack web applications for multiple clients with Laravel, Node.js, Vue.js, React Native, MySQL, Redis, and AWS-backed workflows.
  • Developed marketplace, ticketing, streaming, and education-related workflows across backend APIs, frontend interfaces, and deployment pipelines.
  • Integrated third-party services including email providers, crypto libraries, APIs, and production Node.js deployments.
  • Delivered 30+ websites and client-facing web projects from implementation through deployment.

Evan Emerson - Marketplace, Ticketing, and Streaming Platforms

  • Built Reverse Marketplace using Node.js, Laravel, Bootstrap, MySQL, and Redis for marketplace-style transaction workflows.
  • Developed Farm Marketplace with Laravel, Vue.js, and MySQL for agricultural product and seller workflows.
  • Worked on Ticket & Streaming Service using AWS, Laravel, Vue.js, and React Native for ticketing and media access workflows.

Scot Nery - Ticketing, Email, and Website Development

  • Built ticket app workflows, email integrations, and website features using Laravel, Lumen, MySQL, and JavaScript.
  • Delivered and deployed 30+ websites across client campaigns and business requirements.

Endgame Crypto - Crypto Integration and Node.js Deployment

  • Worked on integrations and frontend workflows involving Solstead, TaiyoRobotics, and Solport.io.
  • Handled library integration, API integration, and frontend development for crypto-related product workflows.
  • Supported Node.js deployment and production setup for application delivery.

Technologies: Laravel, Node.js, Express.js, Vue.js, React Native, TypeScript, Bootstrap, Lumen, JavaScript, MySQL, Redis, AWS, API Integration, Email Integration, Frontend Development, Production Deployments, Git, System Design, Database Design

Full Stack Engineer

Phyrem LLC

Full-time - Remote

May 2023 - Sep 2023

  • Integrated storage-related APIs to support production application workflows.
  • Enhanced campaign management features across backend and frontend systems using CodeIgniter, Bootstrap, and NestJS.
  • Resolved application issues and improved maintainability across existing product modules.

Technologies: CodeIgniter, NestJS, Bootstrap, PHP, REST APIs, JavaScript, Git

Full Stack Engineer

Diocese of Antipolo

Freelance - Remote

Mar 2020 - Feb 2022

Developed a complete educational platform and communication infrastructure for thousands of students.

  • Built school platform modules supporting over 7,000 students across eLearning, grading, and administration.
  • Designed and implemented backend APIs, database models, and school administration workflows.
  • Built SMS gateway architecture that replaced Twilio for cost optimization.
  • Delivered education technology features used by school staff, teachers, and students.

Technologies: PHP, Laravel, MySQL, REST APIs, React.js, React Native, Ionic Framework, Git, System Design, Database Design, System Architecture, Business Systems Development

Senior Web Engineer

PwC Philippines

Full-time - On-site

Jan 2019 - Jul 2021

  • Developed Tax Calendar Mobile Application for internal enterprise workflows.
  • Built Billing & Collection Dashboard to improve reporting and operational visibility.
  • Created Employee Directory and Donation Web Application for corporate teams.
  • Designed and implemented backend APIs for internal tools and reporting systems.
  • Built reporting dashboards that reduced manual data consolidation work.

Technologies: Laravel, PHP, MySQL, REST APIs, React.js, React Native, JavaScript, TypeScript, Bootstrap, Docker, Redis, Git, System Design, Database Design, Reporting Dashboards

Full Stack Engineer

Barkada Travel & Tours

Freelance - Remote

Mar 2019 - Feb 2020

  • Integrated travel services into the Expresspay User Referral Program and PitakaMo Wallet mobile application.
  • Designed and maintained centralized REST APIs for flights, hotels, and tour bookings.
  • Created comprehensive API documentation for client and partner integrations.
  • Managed production servers, deployments, and infrastructure for travel booking systems.
  • Worked directly with stakeholders to convert business requirements into scalable software solutions.
  • Diagnosed and resolved production application and API issues.

Technologies: Laravel, PHP, React.js, React Native, Bootstrap, JavaScript, REST APIs, Docker, Redis, Git, System Design, Database Design, API Documentation, Production Deployments

Full Stack Engineer

TransWealth Fleet & Parking Management

Freelance - Remote

Feb 2019 - Oct 2019

Built a complete B2B fleet and car rental management platform from the ground up.

  • Architected and developed reservation and booking systems for corporate fleet clients.
  • Built vehicle fleet, customer, booking, and rental management modules.
  • Created REST APIs for integrations and future mobile applications.
  • Designed responsive administrative and partner portals for operational teams.
  • Optimized database queries and application performance for daily booking workflows.
  • Managed production deployments, infrastructure, and ongoing client delivery.

Technologies: Laravel, PHP, Bootstrap, MySQL, REST APIs, Database Optimization, Git, System Design, Database Design, Production Deployments

Frontend Engineer

8Layer Technologies, Inc.

Full-time - Pasig, Philippines

Jun 2018 - Dec 2018

  • Created wireframes and responsive UI designs for fintech and communication products.
  • Converted wireframes into production HTML, CSS/SCSS, and JavaScript interfaces.
  • Developed cross-platform mobile application screens using Ionic.
  • Integrated REST APIs into web and mobile applications.
  • Collaborated with backend engineers to ship API-connected user interfaces.
  • Performed UI improvements, bug fixes, and frontend performance optimizations.

StarPay

  • eWallet mobile application built using Ionic.

XLog

  • Realtime embeddable chat platform.

AksyonCrypt

  • Company logo and branding assets.

Technologies: Ionic Framework, jQuery, Bootstrap, SCSS, JavaScript, REST APIs, Git, Database Design, Frontend Development

Full Stack Engineer

Binangonan Catholic College

Freelance - Remote

Jan 2018 - Mar 2018

Designed and developed a complete school management platform with RFID attendance and SMS communication workflows.

  • Architected application database, infrastructure, and module structure for school operations.
  • Built academic, attendance, and administrative modules for staff workflows.
  • Developed REST APIs for web and mobile integrations.
  • Built mobile SMS gateway using Ionic for school communication workflows.
  • Integrated RFID attendance technology for student monitoring.
  • Managed deployments, infrastructure, and ongoing maintenance.

Technologies: Laravel, PHP, MySQL, Ionic Framework, Bootstrap, jQuery, SCSS, RFID Applications, REST APIs, Git, System Design, Database Design

Full Stack Engineer

The Cravings Group

Full-time - Manila, Philippines

Nov 2017 - Jan 2018

  • Developed and designed food e-commerce and catering web applications for production use.
  • Created technical documentation for every developed web application.

Food E-Commerce Web Application

  • Online ordering and catering platform for food service operations.

Catering Contract System

  • Digital contract management system for catering agreements and client workflows.

Technologies: Laravel, jQuery, MySQL, Java, SMS Gateway, MSSQL, Handlebars, Bootstrap, Git, Database Design

Full Stack Engineer

Chefs & Butlers

Freelance - Manila, Philippines

Aug 2017 - Nov 2017

  • Created the complete system schema and database architecture for the platform.
  • Built responsive front-end interfaces using Bootstrap.
  • Developed booking and scheduling system for catering service operations.
  • Implemented payment and ordering system with PayPal integration.

Technologies: Laravel, MySQL, jQuery, Twilio, Java, Yeoman, Bootstrap, PayPal, Git, Database Design

Full Stack Engineer

Orange Apps

Intern - Manila, Philippines

Nov 2016 - Mar 2017

  • Created UI/UX designs for web and mobile application interfaces.
  • Developed back-end system modules using CodeIgniter MVC framework.
  • Performed bug fixing and interface adjustments across different platforms.

Technologies: CodeIgniter, Ionic, Bootstrap, jQuery, MySQL, Git, Database Design

Full Stack Engineer

Hair Geek

Freelance - Manila, Philippines

Aug 2016 - Sep 2016

  • Created the complete system schema and database design for the e-commerce platform.
  • Built a generic e-commerce platform with multi-role portals.
  • Implemented report generation for business analytics and operations.
  • Developed client, staff, and administrator portal interfaces.

Technologies: CodeIgniter, jQuery, MySQL, API Integration, C#, PayPal, E-Commerce, Git, Database Design

Full Stack Engineer

Web Crafts

Project-Based - Manila, Philippines

Nov 2015 - Jul 2016

  • Delivered project-based web development solutions for educational and industrial clients.

Southville International School

  • Web platform for an international school affiliated with foreign universities.

Aerosphere Oil

  • Web development project for an oil industry client.

Technologies: PHP, JavaScript, MySQL, Git, Database Design

Education

STI College

Bachelor of Science in Information Technology

2014 - 2017

Technological Institute of the Philippines

Bachelor of Science in Information Technology

2012 - 2014