Based in

Batangas, Philippines

John Daniel

De Castro

I love creating software, Linux, and the cloud.

About

I'm a passionate full stack developer with a strong interest in cloud infrastructure and Linux systems. I recently graduated with a Bachelor of Science in Information Technology from the University of Santo Tomas, where I took on leadership and technical roles that shaped my foundation in software engineering.

My experience includes serving as a backend developer intern at Asceoft, a frontend developer at TomasinoWeb, and a technical lead in various academic and personal projects. I've also held leadership roles as class vice president and the Commission on Elections deputy for our department, reflecting my commitment to both technical and organizational excellence.

My long-term goal is to become a Chief Architect or Principal Engineer at a leading tech company—designing scalable systems, mentoring engineers, and driving impactful innovation.

Certifications

Microsoft Certified: Azure Fundamentals

Microsoft

Issued: December 2025

Show Credential

AWS Certified Cloud Practitioner

Amazon Web Services (AWS)

Issued: August 2025

Expires: August 2028

Show Credential

Experience

Accenture

September 2025 - Present

Achieved a 96.58% score in Application Development bootcamp covering SQL, C#, Web Technologies, and Azure. Engaged in a continuous technical upskilling program to enhance capabilities in Cloud First Development and Agentic AI.

Position

Associate Software Engineer

Location

Hybrid @ Uptown, Taguig

Industry

IT Services, Consulting, and Outsourcing

Asceoft

February 2025 - May 2025

I served as a backend developer intern where I led the system design and implementation of an internal invoicing system. I designed the database schema, built secure and scalable RESTful APIs, and applied Agile methodologies to ensure timely delivery of all project milestones—often ahead of schedule. By fostering collaboration during the design phase, I helped improve overall team velocity and delivered a robust backend architecture that aligned with real business needs.

Position

Backend Developer Intern

Location

Hybrid @ Sampaloc, Manila

Industry

IT Services and Consulting

TomasinoWeb

September 2023 - June 2025

I worked as a frontend developer, beginning with the successful completion of a full-featured blog application within one week as part of the technical onboarding. Over my term, I developed user interfaces using React and Next.js, streamlined API integration with backend teams to improve performance, and maintained detailed documentation for all development activity. This role honed my frontend engineering skills while reinforcing best practices in collaboration, maintainability, and performance optimization.

Position

Frontend Developer

Location

UST Manila

Industry

Media

Some Contributions

Screenshots of my contributions

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Projects

Felbel Check Writer

Personal Project

June 2025 - July 2025

full-stack

system-design

restful-apis

java

spring-boot

react

Screenshots of Felbel Check Writer

1 / 3

Writing numerous checks is a chore for the employees of Felbel Trading Corporation. I created a React + Spring Boot app that solves this through check management, payee management, and check printing.

Crossy Road Clone

Personal Project

June 2025

game-development

three.js

I created a simple 3D web game to explore Three.js, and game development concepts. A clone of the popular game, Crossy Road. 🐔

Grocy

Personal Project

October 2024 - November 2024

full-stack

system-design

devops

docker

restful-apis

react

laravel

Screenshots of Grocy

1 / 4

Managing your nutrition get a little hard sometimes. Especially when going to the grocery store, wondering how much of X and Ys you should buy to last you the week or the month...

I created Grocy to help users create their recipes, and craft out grocery lists based on the recipes they add. They can also tweak how many sets of recipes they will cook, and the application will intelligently summarize everything in a single list.

Thomsight

Capstone Project

June 2024 - December 2024

system-deployment

frontend

react

state-management

Landing page of Thomsight

As CICS students who had a hard time getting an internship opportunity, we created Thomsight to create a platform where students, company representatives, and alumni communicate and share their experiences to help guide students in picking their dream company.

Outside the Box

Software Engineering

August 2023 - May 2024

leadership

technical-documentation

aws-ec2

full-stack

nextjs

nodejs

figma

Landing page of Outside The Box

The business owner of Outside the Box near Dapitan St. wanted an application to manage their customer logs, reservations, and business performance reports.

This was also the first time I've developed an application of this complexity, and take on a role of a "senior engineer" who oversees the development. Along the way, I learned about technical documentations and how to design a system.

GwaCalc

Computer Programming II - Object-Oriented

May 2022 - June 2022

collaboration

ui-ux

github

java

java-swing

oop

Screenshots of GwaCalc

1 / 4

This project has a special place in my heart. It was the first collaboration project I have done on Github. Designing was done on Figma. I learned event handling, exception handling, local packages/packaging, basic filesytem interaction, and a lot of OOP.

Skills

Core: OOP, System Architecture & Design, REST API Development, System Administration, Cloud Computing

Languages: TypeScript/JavaScript, Java, C#, Python

Frameworks: Angular, Spring Boot, React, ASP.NET, Laravel

Tools: Linux, Docker, AWS, Azure, Git, Github