romnegrillo.dev
Hello, I'm

Romulo A. Negrillo Jr.

I'm a software engineer focused on full-stack development and AI integration, building scalable and intelligent applications.

About me

A quick glance at my journey as a developer.

Hi, I'm a Software Engineer Who Loves Building Things

I'm a software engineer passionate about solving real-world problems through code. I enjoy building web and mobile applications, integrating AI systems, and turning ideas into software that people actually use.

Experienced working on startup environment, helping coordinate development efforts and turn ideas into scalable products. I focus on balancing hands-on coding with making practical product decisions in fast-moving projects.

5
Years Experience
100+
Projects Built

From Embedded Systems to Full-Stack Development

My journey began with embedded systems during my Computer Engineering studies, started freelancing that time as a student. Eventually, I switched specialization to full-stack development, modern web technologies, mobile apps, and AI integration. This shift opened up exciting opportunities to create impactful, user-facing applications.

Supports AI-Powered Development & Modern Productivity

I'm a strong advocate of leveraging AI in development. Used effectively, AI tools significantly boost productivity and allow me to focus on creative problem-solving rather than repetitive tasks.

Diving into Blockchain

Recently, I was drawn into the blockchain space, exploring how to build decentralized applications (dApps) and trading bots to better understand how Web 3 and crypto can create new financial opportunities.

What I Do

A quick overview of the areas I’ve explored and built in — not an expert in all, but familiar with each.

Web Development

Building responsive and modern web applications with cutting-edge technologies. From interactive user interfaces to complex backend systems, creating scalable solutions across all devices.

Mobile Development

Creating cross-platform mobile applications for iOS and Android. Leveraging modern frameworks to build performant, native-feeling apps with seamless functionality.

AI Integration

Integrating advanced language models and agentic AI systems into applications to power conversational interfaces, intelligent decision-making, and autonomous task execution.

Building computer vision systems for image recognition, object detection, and real-time visual analysis across diverse use cases.

Web 3 App and Trading Bots

Developing decentralized applications with various utilities and automated trading systems.

Embedded Systems

Designing and programming embedded solutions for hardware projects. Creating firmware and software for IoT devices, microcontrollers, and specialized hardware systems.

Technologies

The primary tools and technologies I use to bring ideas to life.

JavaScript

JavaScript

TypeScript

TypeScript

Python

Python

Solidity

Solidity

PostgreSQL

PostgreSQL

React

React

React Native

React Native

Next.js

Next.js

Tailwind CSS

Tailwind CSS

FastAPI

FastAPI

Node.js

Node.js

Firebase

Firebase

Supabase

Supabase

LangChain

LangChain

Vertex AI

Vertex AI

Claude Code

Claude Code

ChatGPT

ChatGPT

Gemini

Gemini

VSCode

VSCode

Google Cloud

Google Cloud

Vercel

Vercel

Digital Ocean

Digital Ocean

Previously used tools that I'm less active with today but can readily refresh when needed.

C++

C++

Qt

Qt

TensorFlow

TensorFlow

OpenCV

OpenCV

Django

Django

MongoDB

MongoDB

Shopify

Shopify

Arduino

Arduino

Raspberry Pi

Raspberry Pi

Nvidia Jetson Nano

Nvidia Jetson Nano

YOLO

YOLO

Selenium

Selenium

Pandas

Pandas

Experience

My professional journey building digital products and solutions.

December 2024 – Present

AI/ML Computational Science Senior Analyst

Accenture

  • Developed a proof-of-concept web application featuring a talking avatar integrated with an LLM to deliver personalized product recommendations and automate cart operations. Utilized Next.js for the frontend, FastAPI for the backend, and incorporated Gemini with RAG architecture, deploying the solution on Google Cloud Platform (GCP).
  • Built UI components and backend logic in Python for a data visualization and monitoring project, leveraging Splunk to provide real-time data insights.
Next.jsNext.js
FastAPIFastAPI
PythonPython
Google Cloud PlatformGoogle Cloud Platform
March 2020 - December 2024

Senior Research & Development Software Engineer

Global 3D Systems Inc.

  • Collaborated with the R&D team for the software features of the company's main products, SLA 3D printers and Smart IoT devices.
  • Pioneered the development of kiosk desktop application, web application, and firmware of the 3D Printer using C++, Qt Framework, Python, and embedded boards.
  • Pioneered the development of e-Commerce Web Application using React, Tailwind CSS and Shopify Storefront API (Hydrogen).
  • Pioneered the development of ERP web application using React, FastAPI and Supabase.
  • Employed the Tuya IoT Platform for smart IoT devices.
  • Pioneered a custom IoT application integrating a mobile app and firmware with React Native, Firebase, and ESP32 development board.
C++C++
QtQt
PythonPython
ReactReact
Tailwind CSSTailwind CSS
ShopifyShopify
FastAPIFastAPI
SupabaseSupabase
React NativeReact Native
FirebaseFirebase
July 2021 - February 2024

Software Engineer (Python Developer)

PPC Room LLC

  • Developed Python scripts using Selenium, Pandas, and SQL to extract Amazon Advertising data, with visualization reports created via Google Data Studio to guide the team in Amazon advertising strategies.
  • Regularly updated scraping methods in response to website changes.
  • Assisted in transitioning the web scraping process into using the Amazon Advertising API to enhance automation efficiency.
PythonPython
SeleniumSelenium
PandasPandas
July 2017 - March 2020

Freelance Software Developer

Student Freelancer

  • Freelancer student worked on embedded systems and computer vision, providing thesis and programming-related project services.
  • Utilized programming languages such as C++ and Python, as well as frameworks like Qt, OpenCV, and TensorFlow.
  • Worked with Arduino, ESP8266, and Raspberry Pi development boards, connecting to various sensors and actuators.
  • Implemented computer vision techniques such as image processing and object detection.
C++C++
PythonPython
QtQt
OpenCVOpenCV
TensorFlowTensorFlow
ArduinoArduino
Raspberry PiRaspberry Pi

Projects

Types of projects I've built across different domains and technologies. I choose not to disclose any specific projects for privacy.

Full-Stack Web Apps

E-commerce platforms, dashboards, SaaS applications, LLM integration websites, and content management systems with modern architectures.

Primary tools used:

ReactReact
Next.jsNext.js
TailwindTailwind
FirebaseFirebase
SupabaseSupabase
PostgreSQLPostgreSQL
Google CloudGoogle Cloud

Mobile Apps

Cross-platform iOS and Android applications with native features, push notifications, and offline capabilities.

Primary tools used:

React NativeReact Native
FirebaseFirebase
SupabaseSupabase
PostgreSQLPostgreSQL
Google CloudGoogle Cloud

Web 3 Apps

Fullstack Web 3 applications, trading bots, and smart contracts on EVM.

Primary tools used:

ReactReact
SoliditySolidity
FirebaseFirebase
SupabaseSupabase

Embedded Systems

Arduino and Raspberry Pi projects with sensors, actuators, IoT connectivity, and computer vision applications.

Primary tools used:

C++C++
PythonPython
OpenCVOpenCV
Raspberry PiRaspberry Pi
ArduinoArduino
Nvidia Jetson NanoNvidia Jetson Nano

Let's work together

Have a project in mind or just want to chat? Feel free to reach out.