Gerardo Gastaldo, Front-end Developer in Buenos Aires, Argentina
Gerardo Gastaldo

Front-end Developer in Buenos Aires, Argentina

Member since March 19, 2013
Gerardo is a senior React developer with several years of experience creating polished applications and over a decade of broad development experience. He focuses on working in the front end with the latest React recommendations like using hooks and TypeScript, libraries like Emotion, Styled Components, Theme UI, and components libs like Ant Design and MUI. He has worked efficiently both independently and as a member of a development team. He has a degree in systems engineering.
Gerardo is now available for hire




Buenos Aires, Argentina



Preferred Environment

Git, VS Code

The most amazing... I've coded is a JavaScript function that cleans up browser-generated HTML by pasting it from Microsoft Word. It supports bullets, lists, and tabs.


  • Senior React Developer

    2021 - 2022
    Cruise Automation
    • Added new features, resolved bugs, and improved the existing code, all related to the web React web app.
    • Detected render performance issues using Chrome profiling tools and resolved them.
    • Worked with the Google Map component, showing markers for vehicles that updates constantly their position.
    Technologies: React, TypeScript, MUI CSS, CSS3, HTML
  • React Developer

    2020 - 2021
    Big Rig Media
    • Created a web app from scratch using Ant Design components. Designed all the screens, layouts, and forms from low-level wireframes.
    • Designed the layouts, list, and forms according to the customer's request without a designer on the project.
    • Implemented an abstraction around forms to easily manage validations, changes, and form state; and for tables to efficiently manage pagination, sorting, and filtering.
    Technologies: React, TypeScript, Sass, Ant Design, Redux
  • Freelance React Developer

    2020 - 2020
    • Created a dashboard portal from scratch for the new version of the platform using Ant Design components.
    • Designed the whole project, including the screens, layouts, and forms from low-level wireframes.
    • Proposed changes according to common use cases, such as the use of modals and icons for actions.
    • Led other junior front-end developers, including assigning tasks, mentoring, and reviewing code.
    Technologies: CSS3, HTML5, TypeScript, React, Ant Design, Web Development
  • React Developer | C# Developer

    2020 - 2020
    E11 Capital
    • Created several microservices as part of a back end using ASP.NET Core.
    • Built the initial version of the admin portal using React.
    • Helped create SQL import scripts to import data from a legacy application.
    Technologies: React, PostgreSQL, ASP.NET Core 3, ECMAScript (ES6), REST APIs
  • Web Developer | DevOps

    2018 - 2019
    • Set up Azure DevOps Services, projects, repositories, VMs, automated builds, and continuous integration.
    • Created a portal in React using SemanticUI components to show statistics charts pulled from a local Tableau server.
    • Configured and managed VM running a Tableau server to provide the charts.
    Technologies: MongoDB, Azure DevOps, Node.js, React, Azure, ECMAScript (ES6), Web Development
  • Full-stack Developer

    2018 - 2018
    US Compliance Systems, Inc.
    • Fixed bugs in the current UI in Razor Views with jQuery.
    • Created a new UI from scratch using React in order to replace the old UI written with Razor Views with jQuery.
    • Helped refactor the .NET Core back end from a monolithic service to microservices run in Docker.
    Technologies: .NET, ASP.NET Core, React, Web Development
  • Senior .NET Developer

    2016 - 2018
    Leapfactor, Inc.
    • Created a small mobile web app for capturing new clients. This was created using .NET Core and Framework 7 for the UI.
    • Developed a module from a mobile app using Angular 2 (TypeScript) to make money transfers. It has a custom UX design provided by the UX team, which I recreated with HTML and Sass.
    • Helped build a web administration console for internal use created with React and Redux.
    • Contributed to the development of Kindability, a project built using C#, ServiceStack, and RavenDB.
    Technologies: ASP.NET Core, .NET, React, Angular, ServiceStack, C#, ECMAScript (ES6)
  • Semi-senior Developer

    2015 - 2016
    • Created a module in an enterprise desktop application for managing financial entities. This development involved WPF, MVVM, and Prism.
    Technologies: .NET, REST, Windows Presentation Foundation (WPF), C#
  • Main Developer

    2014 - 2015
    Spirit Consulting, LLC
    • Maintained the CitiWonders internal management web app.
    • Started prototyping a dating app with Xamarin Forms.
    Technologies: .NET, Xamarin, C#, ASP.NET MVC 5
  • .NET Developer

    2012 - 2014
    Making Sense, LLC
    • Developed the back end of Lander (an end-user product, related with marketing) in ASP.NET.
    • Worked on an internal web portal related to email marketing.
    • Used MVC programming paradigms to make controllers and models in C#. Used WCF to communicate with web services.
    • Created a Windows Store app for Rackspace, a front-end for server management in particular file servers.
    Technologies: .NET, JavaScript, Entity Framework, Azure, ASP.NET MVC 3, C#
  • .NET Developer

    2011 - 2012
    Philips Medizin Systeme Böblingen
    • Worked on a TFS implementation of an issue tracking app for medical equipment.
    • Created a tool to import legacy tracking from Excel sheets to TFS.
    Technologies: .NET, Excel Add-ins, TFS API, LINQ, C#


  • Toptal React Academy

    The Toptal React Academy is an exclusive learning program that teaches the React framework to select members of the Toptal network. After a month of study, all graduates are tasked with completing a 30-40 hour final project to build and deliver a React app from scratch. The above is a walkthrough of my final project.

  • ASP.NET Developer

    This is an email marketing platform website that I have worked on. I added new features to the site using ASP.NET MVC 3 with EF. I have been working on the development of this site that is an email marketing platform. I also used AJAX, UI, and jQuery for the client-side logic in the front end.

  • Rackspace Cloud App

    This is an app that I created in two months as part of an eight-person team of developers. It was implemented as the new front end for the Rackspace control panel. Communication with Rackspace servers was accomplished using REST API. We used an MVVM pattern in conjunction with XAML and C#.


  • Languages

    C#.NET, HTML, CSS, C#, JavaScript, SQL, CSS3, ECMAScript (ES6), SCSS, TypeScript, HTML5, XAML, Sass
  • Frameworks

    ASP.NET Core, .NET, ASP.NET MVC, ASP.NET, Ant Design, Entity, ASP.NET MVC 3, ASP.NET MVC 5, ServiceStack, Entity Framework Core, Redux, Angular, MUI CSS
  • Libraries/APIs

    React, React Router, jQuery, jQuery UI, Entity Framework, LINQ, Node.js, REST APIs, React Redux
  • Tools

    Visual Studio 2019, Jira, VS Code, Git, Bitbucket, GitHub
  • Paradigms

    Scrum, Agile Software Development, Azure DevOps, REST, Model View Viewmodel (MVVM)
  • Platforms

    Windows, MacOS, Visual Studio Code, Azure, Xamarin, Visual Studio 2017, Docker
  • Storage

    SQL Server 2008, PostgreSQL, MongoDB
  • Other

    Web Development, Ajax, Cloud Computing, Cloud, Front-end, Excel Add-ins, ASP.NET Core 3, Systems Engineering


  • Bachelor of Technology Degree in Systems Engineering
    2003 - 2009
    Universidad Tecnológica Nacional - Buenos Aires, Argentina


  • Toptal React Academy Graduate
    Toptal, LLC

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