David Ballester

Rising Codementor

US$10.00

For every 15 mins

First 15 mins free for your first session

ABOUT ME

Full Stack Developer

I started my career as a certified Java developer in a startup, but we all know how startups are, so before I knew it, I was also working with JavaScript or Python, even doing some machine learning.

In my spare time, I learned React, which I used as a freelance.

Then, at a big company, I refined my skills with git, Jenkins, Angular, Ionic and Node.js, while also leading a team and mentoring junior developers.

I love building amazing stuff and helping others do the same.

Madrid (+02:00)

Joined September 2020

EXPERTISE

JavaScript

10 years experience

JavaScript has evolved a lot since I started with it (and hated it deeply because of its lack of structure). Since ES5 everything got bet...

JavaScript has evolved a lot since I started with it (and hated it deeply because of its lack of structure). Since ES5 everything got better, and with Node.js, it's virtually everywhere. Now, I got to admit I love it and have tons of fun using it.

TypeScript

3 years experience

I love JavaScript, sure, but when you have a project that starts getting bigger and you have to collaborate with others, Typescript is th...

I love JavaScript, sure, but when you have a project that starts getting bigger and you have to collaborate with others, Typescript is the way to go.

Angular 4 Ionic 3 NestJS Next.js React

Node.js

3 years experience

I've used Node.js for backend development, specially using my beloved Nest.js and some Next.js backend features. I've also used for quick...

I've used Node.js for backend development, specially using my beloved Nest.js and some Next.js backend features. I've also used for quick scripting or other tools like Gatsby.

NestJS Next.js Gatsby.js

React

3 years experience

React is my default choice when picking a frontend framework (or should I say library). I've also wored with Angular.js and later on with...

React is my default choice when picking a frontend framework (or should I say library). I've also wored with Angular.js and later on with Angular 4, but React just clicks for me, specially since version 16. I love how simple its concept is and the modularity it offers with very little boilerplate, so you can focus on what's important: building something great from the ground up.

Redux

DevOps

5 years experience

I've written Jenkins pipelines to build, test and deploy solutions. I've also worked extensively with Docker, writing Dockerfiles, adding...

I've written Jenkins pipelines to build, test and deploy solutions. I've also worked extensively with Docker, writing Dockerfiles, adding layers on top of existing ones to customize behaviors, deploying containers based solutions using docker-compose. And to do all that, there are also tons of bash scripting involved, so there's that. :D

Shell Jenkins Docker

Shell Jenkins Docker Bash Linux

Material-UI

2 years experience

I love this Material Design implementation for React. It's true that we've seen Material Design way too much already, but this library is...

I love this Material Design implementation for React. It's true that we've seen Material Design way too much already, but this library is my reference when looking for a great design system. It's easy to use, customizable and well documented, so I've used in many projects, both personal and professional.

Git

3 years experience

When I started in this career, I didn't start with git. We had SVN and later on Mercurial. Because of that, when I landed in git lands, I...

When I started in this career, I didn't start with git. We had SVN and later on Mercurial. Because of that, when I landed in git lands, I saw how awesome it was compared to the other two. Since then, I've tried to master it as much as possible, and focused on good practices that help keeping things tidy and useful, such as conventional commits and semantic versioning.

GitHub

REVIEWS FROM CLIENTS

David's profile has been carefully vetted and approved as a Codementor. Connect with David now, and leave a review for them once you're done!

SOCIAL PRESENCE

GitHub

web3-design-system

Creating the Web3 Design System to improve the UX of the Web3 and Blockchain space

JavaScript

grapher

A tool to create and edit graphs

JavaScript

Stack Overflow

528 Reputation

EMPLOYMENTS

Full Stack developer

Caroda

2019-06-01-Present

Caroda is a video advertising company. I work creating solutions to deliver video advertising on our customers websites using our own sol...

Caroda is a video advertising company. I work creating solutions to deliver video advertising on our customers websites using our own solution built, from the video player itself to the backend services.

Azure

React

JavaScript

Azure

React

JavaScript

Svelte

Technical lead

DXC Technology

2019-06-01-2020-06-01

I designed and lead the development of a microservice-based web application for a public healthcare service. We did everything from scrat...

I designed and lead the development of a microservice-based web application for a public healthcare service. We did everything from scratch, using industry standards such as OpenID Connect and FHIR v4. I wrote all the technical documentation for the project and mentored new recruits.

GitHub

React

Spring Boot

GitHub

React

Spring Boot

Material-UI

Microservices

Next.js

Full Stack developer

DXC Technology

2018-01-01-2019-06-01

I started building a hybrid application on the healthcare sector. I worked on the frontend and collaborated on building a new backend fro...

I started building a hybrid application on the healthcare sector. I worked on the frontend and collaborated on building a new backend from scratch. There I discovered the complexities of managing healthcare data and worked with FHIR v3 and v4, a beautiful standard for this typology of data.

Node.js

Docker

Ionic 3

Node.js

Docker

Ionic 3

NestJS

PROJECTS

GrapherView Project

2019

A text-based graph editor. Using a simple grammar, you write down your graph and watch it in real time. Your graphs are stored in Firebas...

A text-based graph editor. Using a simple grammar, you write down your graph and watch it in real time. Your graphs are stored in Firebase so you can access them from anywhere, or, if you do not want to log in using your Google account, they are kept into your local storage and can be exported and imported in JSON format.

React

Material-UI

Redux

React

Material-UI

Redux