👋

Hello, I am

Reynaldo

International Media Informatics

Master Student

About Me

Backend Developer

Backend Developer

Driven by the goal of building complete, working applications, I dove into backend development to understand how to manage data efficiently and make everything work smoothly behind the scenes.

Mobile App Developer

Mobile App Developer

I started my mobile development journey by building small apps for fun and personal use. It was a great way to learn by doing and you can check out some of them in the "Work" section of my portfolio.

Web Developer

Web Developer

My passion for web development started with school projects and quickly turned into something more. As a self-taught developer, I’ve spent countless hours learning and experimenting to bring ideas to life on the web.

UI/UX Tester

UI/UX Tester

I genuinely enjoy crafting websites that feel good to use. Making sure users have a smooth, intuitive experience is something I care about deeply, it’s all about making the web feel human friendly.

My Portfolio Section

UI/UX
Web App
Mobile App
React JS
All

Covid-19 tracker

website that can be used to monitor total numbers of infected and recovered from corona virus

React JS

Weathering Today

a web app to see weather of cities around the world, with temperature, humidity and windspeed.

Web App

Todolist App

an application built using flutter to list tasks you need to do on your phone

Mobile App

Fit Club

exercise website to find perfect exercise for what muscle the user want to train

React JS

Note Application

an application for taking important notes with features like image and importance level

Mobile App

MyChat

real-time web chat application using chatengine.io and firebase as the server

Web App

What's the Plan ?

a to-do-list web application that you can add, edit and remove anytime you want

Web App

Skills & Experiences

AWS

AWS

WordPress

WordPress

C#

C#

Flutter

Flutter

TypeScript

TypeScript

Node.js

Node.js

React

React

JavaScript

JavaScript

Next.js

Next.js

HTML

HTML

Cypress

Cypress

MySQL

MySQL

Figma

Figma

Material UI

Material UI

Git

Git

CSS

CSS

Tailwind

Tailwind

Kotlin

Kotlin

2023 - now

International Media Informatics Master

HTW Berlin

The Master's degree program has an international focus and offers a wide range of courses. The main areas of study within the program are Game Technology & Interactive Systems, Visual Computing, and Web Technology. I am currently in the final phase of the program, working on my Master’s thesis.

2024 - now

Software Developer - Working Student

GP Joule Connect

I focused on building internal web apps using React and TypeScript. I also contributed to the backend by writing Python-based serverless functions with AWS Lambda. Part of my role involved working with GraphQL APIs through AWS AppSync and managing data models with PostgreSQL and SQLAlchemy. I worked closely with product owners and internal users to gather feedback and continuously improve features.

2024 - 2024

Software Developer - Working Student

Partimus GmbH

I helped build and maintain a customer portal using Next.js on the frontend and Nest.js on the backend. I also developed APIs with FastAPI and Python to process feedback from power distribution units via socket connections. My work included bug fixing and performance tuning. I used Azure DevOps for version control and task management.

2023 - 2024

Software Developer - Working Student

VIZAVY

At VIZAVY, I worked on web applications using Next.js and TypeScript, and supported backend development in Java with Spring Boot. I wrote end-to-end tests with Cypress.io and collaborated with designers through Figma. I helped improve customer order workflows and presented my work to stakeholders. I was part of a Scrum team using Jira, Bitbucket, and Confluence for development and documentation.