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Dionicio – React, JavaScript, Typescript, experts in Lemon.io

Dionicio

From Dominican Republic (UTC-4)

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Front-end Web DeveloperSenior
8 years of commercial experience
Analytics
Art and creativity
Communications
Cryptocurrency
Data analytics
Edtech
Entertainment
Fintech
Healthcare
Healthtech
Information services
Music and audio
NFT
Public relations
Social impact
Data monetization
Marketplace
Subscription
Media players
Web3
Gaming software
Lemon.io stats
1
projects done
664
hours worked
1
offers now 🔥

Dionicio – React, JavaScript, Typescript

Dionicio is a seasoned front-end developer with six years of expertise in React. He has comprehensive experience in creating applications from concept to support phases. Dionicio is adaptable in communication, ensuring clear interactions, even when faced with unfamiliar topics. This flexibility makes him adept at working with end customers to deliver successful projects.

Main technologies
React
6 years
JavaScript
7 years
Typescript
4 years
Next.js
3 years
Additional skills
Redis
SASS
Jest
Apollo GraphQL
Vuex
Bitbucket
Stripe API
MySQL
React Native
Electron.js
Node.js
Material UI
Chart.js
Storybook
Cypress
Vue.js
PHP
Jenkins
AWS
Docker
AWS Lambda
GraphQL
Sentry
Vite
Testimonials
#21087925351Front-End Dev for the world's #1 system for self-improvement
"We can’t thank you enough for linking us with Dionicio. He met expectations and was an incredible culture add to the team."
Direct hire
Potentially possible
Ready to get matched with vetted developers fast?
Let’s get started today!

Experience Highlights

Senior Front-end Developer
Aug 2024 - Dec 20244 months
Project Overview

The world's #1 self-improvement system and community. The products help keep people on there ir A-game and more focused, confident, resilient, and driven to win life!

GrowthDay aims to inspire personal growth by helping users set and achieve goals, track habits, and engage in continuous self-improvement with tools like:

  • Daily Growth Streaks: Encourages consistency through daily journaling, checklists, and habit tracking.
  • Journaling & Goal Setting: Built-in tools for reflection, planning, and tracking personal progress.
  • Community Engagement: Users can view each other’s achievements, fostering motivation and accountability.
Responsibilities:
  • Redesigned the existing front end into Next.js;
  • Wrote unit tests with Jest, integration, and e2e in GitHub actions;
  • Implemented a new video player for media visualization;
  • Refactor all GraphQL queries on AWS Amplify and Cognito
Project Tech stack:
React
AWS Lambda
React Hook Form
React Hooks
Material UI
Stripe API
GraphQL
Styled-components
Typescript
Vite
React Query
e2e testing
Unit testing
Jest
Senior Web Developer
Mar 2021 - Oct 20221 year 7 months
Project Overview

This platform delivers unique local content and network programming to inform and entertain viewers while providing premium, scalable local advertising opportunities for advertisers and brands across all screens and devices.

Responsibilities:
  • Created beautiful interfaces based on UI/UX designs;
  • Developed fully functional web applications by writing clean code;
  • Created and executed unit and UI tests to identify malfunctions;
  • Supported the entire application lifecycle, including concept, design, test, release, and support phases;
  • Retrieved specific requirements and suggested solutions to improve user experience;
  • Evaluated and debugged mobile applications to optimize their performance;
  • Found and suggested new web products, applications, and protocols.
Project Tech stack:
Docker
React
jQuery
WordPress
PHP
AWS
Redis
SASS
Jest
Apollo GraphQL
Next.js
Vite
e2e testing
FullStack Javascript Engineer (Frontend Specialist)
Jul 2021 - Jun 202211 months
Project Overview

An ever-growing set of (decentralized) apps where the client can create, share & discover content; mint, buy, & store NFTs; store & manage all their cryptocurrencies and more. But all the revenue goes to the client only.

Responsibilities:
  • Created a Crypto Currency wallet with JavaScript-related technologies;
  • Built software products, including tooling, web services, and desktop applications;
  • redesigned the existing desktop application into a new Electron + React platform with Next.js;
  • Architected the Auto Update desktop feature for different desktop operating systems;
  • Researched, developed, and implemented software based on analyzed requirements and understanding of industry technical standards;
Project Tech stack:
React
Node.js
Electron.js
Next.js
SASS
GitHub
Typescript
Jenkins
Styled-components
Senior Developer (Frontend Focus)
Apr 2020 - Apr 20211 year
Project Overview

Genius Plaza provides access to quality education for all students as a gateway to power and opportunity.

The project aimed to create the Genius village Ecosystem based on multiple products that help leaders protect, track and improve the health, education, and data privacy of their loved ones.

During my time at Genius Plaza, I worked on projects that adhered to both HIPAA and PCI compliance standards. This experience has given me a strong understanding of the importance of data privacy, security protocols, and regulatory requirements in software development.

Responsibilities:
  • Developed fully functional web applications writing clean code;
  • Created and executed unit and UI tests to identify malfunctions;
  • Supported the entire application lifecycle, including concept, design, test, release, and support phases;
  • Retrieved specific requirements and suggested solutions to improve user experience;
  • Evaluated and debugged mobile applications to optimize their performance;
  • Found and suggested new web products, applications, and protocols;
  • Contributed to and followed our workflow process alongside the rest of the Frontend Engineers;
  • Designed, installed, and tested the website's user interface elements;
  • Focused on the website's functionality and look of a website;
  • Understood the various information a website has and created a plan for structuring the website and how best to present the information on the website or web application.
Project Tech stack:
React
Typescript
Python
Jenkins
Material UI
HTML
Styled-components
AWS
Redis
MySQL
API testing
Jest
Functional Testing
Unit testing
Front-End Developer
Sep 2019 - Jan 20204 months
Project Overview

The Hibooks project was a personalized audiobook platform originally designed to transform how users experience spoken content. Founded in 2014 and formerly known as Otto Radio, Hibooks offered a mobile and web application that allowed users to stream or download audiobooks, podcasts, and news content across various genres, including crime, romance, sci-fi, and non-fiction.

The company emphasized a user-centric design and robust backend infrastructure to support secure content delivery and analytics.

Responsibilities:
  • Built and maintained dynamic user interfaces using Vue.js and React Native, ensuring a responsive and intuitive user experience across web and mobile platforms.
  • Replicated Native Functionality such as an audio Player on React Native;
  • Monitored and reported bugs with Sentry and DataDog;
  • Integrated Stripe for secure and reliable payment processing, including subscription management and billing workflows.
  • Created the initial MVP of Hibooks React Native Application and Web Platform.
  • Contributed to the brainstorming of the product;
Project Tech stack:
Vue.js
React
React Native
iOS
Android Studio
API
PHP
AWS
Figma
Axios
Sentry
Datadog
Front-End Developer
Nov 2017 - Jan 20202 years 2 months
Project Overview

Creation of an app like Audiobooks.com. The team managed to build the Web APP in 3 months. After the Web App was built, the team saw an increase from 6000 to 38000 annual subscriptions. The client was very happy as 92% of those 32000 subscriptions were made from the Web app.

Responsibilities:
  • Developed new features and user interfaces from wireframe models;
  • Created beautiful interfaces based on UI/UX designs;
  • Ensured the best performance and user experience of the application;
  • Created code for the website and tested it to ensure its functionality;
  • Monitored websites to ensure they continued to run properly and made modifications as needed;
  • Ensured that web design was smartphone capable;
  • Streamlined and optimized loading speed.
Project Tech stack:
React
Vue.js
Vuex
Redux
Redux Saga
Redux Thunk
Docker
Jenkins
GitHub
Bitbucket
Jira
Stripe API
SASS
PHP
HTML
CSS
jQuery
MySQL
Typescript

Education

2017
Software Engineering
Associate of Science
2022
Software Engineering
Bachelor's

Languages

Spanish
Advanced
English
Advanced

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