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Iduart Dean Barrios
Verified Expert in Engineering
Front-end Web Developer
Medellín - Antioquia, Colombia
Toptal member since December 10, 2021
Bio
Iduart is a full-stack developer and technical leader with nine years of experience, specializing in front-end development with JavaScript and React. He has also worked with a wide range of technologies, including PHP, .NET, jQuery, Angular, Durandal, Node.js, MongoDB, Elasticsearch, Oracle, and MySQL. Iduart has worked in education, healthcare, real estate, and eCommerce.
Portfolio
Naked Apps LLC
React Native, Node.js, Mobile Development, Full-stack
Stubhub - Engineering
React, TypeScript, JavaScript, C#, CSS
Allegis - Cruise Automation - Main
React, Gatsby, Contentful, CSS, HTML, JavaScript
Experience
- JavaScript - 12 years
- Redux-Saga - 9 years
- Redux - 9 years
- Node.js - 9 years
- React - 9 years
- React Native - 4 years
- Vue - 4 years
- Nuxt.js - 2 years
Preferred Environment
MacOS, Slack, Chrome, Visual Studio Code (VS Code), React, Redux, Redux-Saga, JavaScript, React Native
The most amazing...
...development experience I've had was a UI components library where I learned a lot about building the front end in a composable way.
Work Experience
Full-stack React Native/Node.js Developer
2025 - 2025
Naked Apps LLC
- Restored a previously abandoned React Native application by identifying the correct codebase, fixing build issues, and re-establishing compatibility for both Android and iOS.
- Resolved legacy bugs and broken dependencies to stabilize the development environment and ensure successful deployment pipelines.
- Resumed feature development from the previous team’s handoff and successfully redeployed the app to development, reviving a stalled mobile initiative.
Technologies: React Native, Node.js, Mobile Development, Full-stack
Senior Front-end Developer
2024 - 2024
Stubhub - Engineering
- Implemented front-end and back-end features for the primary ticketing resale platform, contributing to both the legacy C# system and the new React-based architecture during an ongoing migration.
- Built A/B test experiments around each new feature to validate impact on user engagement and profit, enabling data-informed product decisions.
- Measured the success of features by analyzing performance metrics post-launch, directly linking changes to improvements in key business KPIs.
Technologies: React, TypeScript, JavaScript, C#, CSS
React/Gatsby Developer
2023 - 2024
Allegis - Cruise Automation - Main
- Developed a reusable component system for the GetCruise website redesign, enabling consistent and efficient front-end development.
- Architected the connection between Contentful content models and front-end components to support dynamic page rendering.
- Designed a structured Contentful model that simplified content entry for publishers and reduced configuration errors.
Technologies: React, Gatsby, Contentful, CSS, HTML, JavaScript
Gatsby Developer
2023 - 2023
Confluent
- Developed and maintained key company websites using React and Gatsby. Implemented A/B tests in collaboration with marketing, aiding user engagement and conversion improvements.
- Managed several projects concurrently, successfully meeting deadlines and stakeholder requirements through effective communication and task prioritization.
- Improved codebase quality by cleaning stale A/B test code and contributed to developing a new design system by creating reusable UI components.
Technologies: React, CSS, JavaScript, Node.js, GraphQL, Figma, Gatsby, Sass, Cypress, Unit Testing, JavaScript 6, JavaScript 5, HTML, CSS3, CSS3 Animation, Debugging, Contentful, Drift, Optimizely, A/B Testing, Stakeholder Management, Marketo, SaaS, SCSS, Netlify
React/React Native Developer
2023 - 2023
TalkShopLive, LLC
- Migrated the main application chat from WebSockets to the PubNub service, ensuring a more robust and scalable real-time communication system for users.
- Implemented the PubNub authorization flow on the front end, streamlining the user authentication process and enhancing overall security measures.
- Developed all UI elements in React, creating an intuitive and visually appealing user interface that improved the user experience and facilitated seamless interactions within the chat application.
Technologies: JavaScript, HTML, CSS, React, Webpack, Redux, Redux-Saga, PubNub, Git, GitHub, Debugging, JSON Web Tokens (JWT), Authorization, REST APIs, SCSS, React Native
React/Python Full-stack Developer
2022 - 2023
Indigo
- Collaborated in the redesign of a new workflow for assessing grower field eligibility for the carbon credits program, streamlining the evaluation process and increasing overall efficiency within the admin panel.
- Developed user-friendly UI components for the internal support tool, enabling support staff to effectively triage grower's fields and easily determine their suitability for the program.
- Implemented data-driven features within the admin panel, facilitating real-time insights and accurate assessments, which contributed to an increased number of qualified fields being accepted into the carbon credits program.
Technologies: JavaScript, HTML, CSS, React, Next.js, Cypress, CircleCI, GitHub, Mapbox, Sass, Jira, Flask, Python 3, Python, PostgreSQL, SQL, SAML, LogRocket, Datadog, Slack, PagerDuty, Debugging, Jinja
React/React Native/Node.js Full-stack Developer
2022 - 2023
TalkShopLive, LLC
- Designed and implemented a component architecture for an analytics dashboard, enhancing reusability and streamlining development in a React-based environment.
- Developed a comprehensive components library, including data-driven cards with graphs and filterable tables, which contributed to a seamless and interactive user experience similar to Google Analytics.
- Optimized SQL queries and crafted a robust Node.js back end for report generation, increasing data retrieval efficiency and ensuring a reliable data pipeline to feed the dashboard UI.
Technologies: React, Node.js, PostgreSQL, JavaScript, HTML, CSS, CSS3, Figma, Jest, SQL, Redux, Redux-Saga, Analytics, GitHub, CircleCI, Cypress, Debugging, Webpack, React Native
Contentful Developer
2022 - 2022
OpenPayd Services Limited
- Developed a feature to dynamically generate static pages in Nuxt.js when pages are added in Contentful.
- Added internationalization support for the main marketing website.
- Improve SEO tags and metadata for Nuxt.js static site generation.
Technologies: Nuxt.js, Contentful, JavaScript, HTML, CSS3, Tailwind CSS, Vuex, Vue, GitLab, GitLab CI/CD, Netlify, Vue SSR, Axios, Unit Testing, Webpack
React Developer
2022 - 2022
Crush & Lovely LLC
- Worked as a React developer for a workflow management application.
- Developed a module for automated rules by setting a trigger, conditions, and actions to be executed automatically (like automated rules in Jira). The tech stack was React, Redux, and Formik.
- Discovered requirements with the client to organize the backlog and create tasks for each iteration.
Technologies: React, HTML, CSS, Redux, Formik, JSDoc, GitHub, PostgreSQL, Azure SQL Databases, Debugging, JavaScript, Bootstrap, React-Bootstrap, Less, JSON Web Tokens (JWT), REST APIs, Webpack
Senior React Native Developer
2021 - 2022
Alphare.com
- Implemented a React Native project in a monorepo to share web and mobile code dependencies.
- Developed a module for property share payments using a digital wallet.
- Finished all the development required for a minimum viable product (MVP) on the dates established with all the mobile apps tested.
Technologies: React Native, React, Docker, PostgreSQL, Apollo, GraphQL, Lerna, Monorepos, Mobile, GitHub, Next.js, JavaScript, Dwolla API, Plaid API, Plaid, TypeScript, Jest, Automated Testing, Android, Debugging, iOS, Formik, Tailwind CSS, JSON Web Tokens (JWT), REST APIs, Webpack
Senior React/React Native Developer
2020 - 2022
Sunrise Integration
- Developed a React Native mobile app for an eCommerce platform to show live videos to promote and sell products.
- Built an API documentation site by combining several sources, such as OpenAPI specs, custom JSON files, and Contentful and company-specific data. The tech stack was Vue/Nuxt.js and Firestore.
- Developed a product management application based on Vue/Nuxt.js and MySQL.
Technologies: React, Redux, MobX, React Native, Nuxt.js, Vuex, Vue, Sentry, HTML5, HTML, CSS, CSS5, JavaScript, Algolia, Cloud Firestore, MySQL, PostgreSQL, Amazon EC2, REST APIs, Git, GitHub, GitLab, Bitbucket, Unit Testing, E2E Testing, Jest, Enzyme, Chai, Cypress, Styled-components, SaaS, Web Accessibility, Accessibility, A11Y, Debugging, Web Platforms, Mobile, Mobile Apps, Contentful, Automated Testing, Android, iOS, Bootstrap, React-Bootstrap, Less, Tailwind CSS, Vue 2, Webpack
Technical Lead
2021 - 2021
TEAM International
- Participated in a website migration from Create React App to Next.js.
- Conducted interviews to recruit front-end developers for my team.
- Led a four-member development team to plan and deliver projects on time.
Technologies: React, Redux, Next.js, Team Leadership, Create React App, TypeScript, JavaScript, HTML, CSS, Amazon EC2, GitHub, PostgreSQL, Git, GitLab, Cypress, Amazon S3 (AWS S3), Unit Testing, Jest, Chai, Enzyme, E2E Testing, Styled-components, SaaS, Web Platforms, Debugging, Automated Testing, Bootstrap, React-Bootstrap, Less, JSON Web Tokens (JWT), REST APIs, Webpack
Senior React and Node.js Developer
2019 - 2021
UruIT
- Designed front-end patterns to reduce development time.
- Developed a preventive maintenance scheduling module for a real estate business.
- Contributed to improving the developer experience on the front end by providing new patterns.
Technologies: React, Redux, Redux-Saga, Node.js, JavaScript, HTML, CSS, Git, GitHub, Amazon EC2, Unit Testing, E2E Testing, Cypress, Jest, Enzyme, Chai, Debugging, Web Platforms, Automated Testing, Bootstrap, React-Bootstrap, Less, JSON Web Tokens (JWT), REST APIs, Webpack, SCSS
Senior Developer and Technical Lead
2014 - 2019
Condor Labs
- Progressed from a mid-level developer to a technical leader.
- Led the development of a new section of the company using React, Redux, and Redux-Saga on the front end; consuming an API in Node.js and Express.js; and using different storage services and databases, such as Elasticsearch, MongoDB, and Oracle.
- Built an application from scratch to search for courses, using React on the front end and a mix of C#, Elasticsearch, and Oracle on the back end.
Technologies: React, Node.js, JavaScript, Redux, Redux-Saga, Elasticsearch, Oracle, MongoDB, C#.NET, SQL, Durandal, jQuery, Express.js, C, GraphQL, HTML, CSS, Git, GitHub, Amazon EC2, Unit Testing, Jest, Sinon.JS, Enzyme, Chai, Debugging, Web Platforms, Automated Testing, Less, Sass, Bootstrap, React-Bootstrap, JSON Web Tokens (JWT), REST APIs, Material UI, Webpack, Gatsby, SCSS
Junior Software Developer
2012 - 2014
Blinsoft Tecnologia e Información
- Provided post-implementation support and mentorship for clients.
- Developed a healthcare platform to track clinical history, billing, and procedures.
- Designed and developed a platform to manage and autogenerate templates for legal documents.
Technologies: PHP, Zend Framework, Laravel, MySQL, JavaScript, jQuery, HTML, CSS, Amazon EC2, GitHub, Git, Debugging, Web Platforms, Bootstrap, JSON Web Tokens (JWT), REST APIs, OAuth, Material UI
Experience
AuditChamp
https://www.auditchampapp.com/auditchampI worked as the sole developer on a mobile application designed to help users stay compliant with IRS requirements during an audit. The app allowed users to scan tax documents—such as 1040 forms—using OCR technology to automatically extract key information. From there, users were guided through organizing supporting documentation, including dependents’ details, income verification, and expense tracking, to prepare a complete audit response. The app also provided options to submit the final documentation via fax or the IRS upload tool.
When I joined the project, the app had been abandoned and was no longer functional. I revived it by fixing broken builds, upgrading dependencies, and restoring compatibility for both Android and iOS. I handled all aspects of development—front end, back end, and infrastructure—and ensured the app was production-ready for submission to both the App Store and Google Play. My work brought the app back to life, which is currently in the UAT phase.
When I joined the project, the app had been abandoned and was no longer functional. I revived it by fixing broken builds, upgrading dependencies, and restoring compatibility for both Android and iOS. I handled all aspects of development—front end, back end, and infrastructure—and ensured the app was production-ready for submission to both the App Store and Google Play. My work brought the app back to life, which is currently in the UAT phase.
CE Broker
A continuing education tracking platform to help professionals comply with regulatory and state requirements in the United States. I managed the team that built the platform where the regulatory boards could determine if a person was compliant.
Recharge API Docs
https://developer.rechargepayments.com/At Sunrise Integration, I designed the architecture and developed the Recharge API documentation. The site is autogenerated by reading OpenAPI specifications and other custom company information. The tech stack included Nuxt.js (client/server) and Firestore database.
Prism
https://www.buildingengines.com/platform/A real estate management web application based on React and Django. I was the main front-end developer working on several modules, including communications and preventive maintenance. I also contributed to refactors, implementation of new patterns, memory leak fixes, and performance improvements using Chrome DevTools Performance and memory tabs.
Skills
Libraries/APIs
React, Redux-Saga, Sinon.JS, Chai, REST APIs, Node.js, Vue, jQuery, Vuex, MobX, OpenAPI, Bitbucket API, Dwolla API, Plaid API, Formik, Vue 2, PubNub
Tools
Create React App, GitHub, Git, Sentry, Chrome Developer Tools, Bitbucket, Ngrok, GitLab, Lerna, Plaid, GitLab CI/CD, Webpack, Figma, CircleCI, Jira, Slack, Drift, Optimizely, Xcode
Languages
JavaScript, CSS, HTML, HTML5, Less, SCSS, GraphQL, Sass, C#.NET, SQL, PHP, C, TypeScript, CSS3, Python 3, Python, SAML, JavaScript 6, JavaScript 5, C#
Frameworks
Redux, React Native, Jest, Bootstrap, React-Bootstrap, JSON Web Tokens (JWT), Express.js, Cypress, Tailwind CSS, Material UI, Nuxt.js, Zend Framework, Laravel, Durandal, Next.js, Django, Vue SSR, Flask, Jinja
Paradigms
Unit Testing, E2E Testing, Automated Testing, Mobile Development
Platforms
Amazon EC2, Mobile, Algolia, Oracle, Contentful, Docker, Android, iOS, Netlify, Mapbox, PagerDuty, Marketo
Storage
MySQL, PostgreSQL, Amazon S3 (AWS S3), MongoDB, Elasticsearch, Cloud Firestore, Azure SQL Databases, Datadog
Other
Front-end, CSS5, Enzyme, Styled-components, OAuth, Axios, APIs, SaaS, Web Accessibility, Accessibility, Accessible Design, Mobile Apps, Gatsby, Team Leadership, A11Y, Debugging, Web Platforms, Apollo, Monorepos, JSDoc, Analytics, Authorization, LogRocket, CSS3 Animation, A/B Testing, Stakeholder Management, Full-stack
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