Full Stack Developer · React, Node.js & 3D

Hi, I'm David Naranjo

Full Stack Developer with nearly five years building web, mobile and 3D applications end to end: secure Node.js and Express APIs, SQL and NoSQL databases, and fast interfaces with React, Next.js and Three.js.

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About me

I'm a Full Stack Developer with nearly five years of experience building web, mobile and 3D applications end to end. I currently work at DALOG Diagnosesysteme GmbH, optimizing a React platform that delivers large volumes of industrial sensor data in real time.

On the back end, I build Node.js and Express APIs with protected routes, authentication and role-based authorization middleware, and data layers on MySQL, MariaDB and MongoDB using ORMs and MVC architecture. On the front end, I work with React, Next.js, TypeScript and Three.js, with a strong focus on performance, Core Web Vitals and technical SEO.

I'm studying Software Development Engineering at Pascual Bravo University Institution and hold a Technologist degree in Generalist 3D Technology from SENA, plus diplomas from Digital House, UPB and Misión TIC 2021.

Technical skills

Back-End

Node.js
Express.js
REST APIs
MVC
Auth & RBAC

Databases

MySQL
MariaDB
MongoDB
Sequelize
Supabase
Firebase

Front-End

React
Next.js
TypeScript
Vite
Astro
Redux
Zustand
GSAP

3D & Mobile

Three.js
React Three Fiber
Web Workers
iOS (Swift)
Android (Kotlin)

Testing & DevOps

Jest
React Testing Library
GitHub Actions
CI/CD
Azure

Performance & AI

Lighthouse
Core Web Vitals
Technical SEO
n8n
AI agents

Experience

Full Stack Development

Jun 2026 — Present
DALOG Diagnosesysteme GmbH
Front-End Developer
Industrial machine monitoring platform. I maintain and modernize a legacy React application, shipping bug fixes and new features every sprint (machine status dashboards, alert visualization and operational reports). I moved heavy data processing to Web Workers to keep the UI responsive with large sensor datasets, and work with the back-end team on endpoint design and payload optimization.
- React
- TypeScript
- Vite
- Web Workers
- Axios
- REST APIs
- Azure
Feb 2022 — Jun 2026
Makata Studio
Full Stack · Mobile · 3D Developer
Digital studio building web, mobile and 3D products for clients, from back end to UI. I built Node.js and Express back ends with routes protected by authentication, authorization and role-based access control; modeled MongoDB, MySQL and MariaDB databases through ORMs and integrated Supabase and Firebase. I developed full stack apps with React and Next.js (Redux, Zustand, Jest), 3D experiences with Three.js and R3F, and native iOS and Android apps.
- Node.js
- Express
- MongoDB
- MySQL
- Supabase
- Next.js
- Three.js
- Swift
- Kotlin
- n8n
Sep 2021 — Apr 2022
Protalento
Full Stack Developer
Designed and built a RESTful API with Node.js and Express following the MVC pattern, modeling data, relationships and queries on MySQL with Sequelize. Implemented authentication and role-based authorization middleware for protected routes, and built the React front end with dynamic forms, filters and product views, documenting the API.
- Node.js
- Express
- Sequelize
- MySQL
- React
- React Router

Hobbies · 3D Art

Feb 2020 — Present
Freelance
3D Artist
3D and 2D digital art for companies and individuals: character design, 3D modeling for animated projects, and rendering for audiovisual productions.
Mar 2019 — Aug 2019
Semillero de Investigación ITADIR
3D Artist
3D artist and researcher on augmented reality, virtual reality and motion capture projects. Worked on the animated short film "Sinfonía Salvaje" (Wild Symphony).