Senior Software Engineer

Building the Future ofWeb Applications

I'm Murillo, a passionate frontend engineer specializing in React, TypeScript, and modern web technologies. I create scalable, performant, and beautiful user experiences that make a difference.

Skills & Technologies

A comprehensive toolkit built through years of experience in modern web development.

Frontend

React

95%

TypeScript

92%

Next.js

90%

JavaScript

95%

HTML5

95%

CSS3

90%

SCSS

88%

Sass

88%

React Native

85%

Redux

88%

React Hooks

92%

Context API

90%

Zustand

85%

Vue.js

75%

Angular 2+

80%

AngularJS

75%

Ionic 2

70%

Svelte

70%

Backend

Node.js

82%

GraphQL

88%

REST API

90%

Ruby on Rails

75%

Express.js

80%

Java

70%

Java 8

70%

PHP

65%

JSP

65%

UI/UX & Design

Tailwind CSS

92%

Styled Components

88%

Chakra UI

85%

React Bootstrap

80%

Bootstrap

85%

Atomic Design

90%

Responsive Design

92%

UI/UX Design

85%

SVG

80%

DevOps & Tools

Git

92%

Docker

78%

Azure

75%

Google Cloud

75%

Heroku

70%

Vercel

85%

CI/CD

80%

Webpack

82%

Vite

85%

Babel

80%

Gulp

75%

Testing

Jest

88%

React Testing Library

85%

Unit Testing

88%

E2E Testing

80%

TDD

82%

Karma

70%

Database

MongoDB

80%

Firebase

75%

Data Visualization

Highcharts

85%

Chart.js

80%

Canvas API

75%

CMS

WordPress

75%

Methodology

Scrum

85%

Clean Code

90%

Featured Projects

A selection of projects that showcase my expertise in modern web development, from concept to deployment.

Classic Snake Game

Browser-based Snake game with high score tracking and responsive controls

JavaScriptHTML5 CanvasCSS3+1

Wheel of Fortune Game

Interactive spinning wheel game with customizable options and smooth animations

NextJSTailwindHooks+1

Social Media Dashboard

Modern social media management interface with post scheduling and analytics

ReactCSS3JavaScript+1

Crypto Dashboard

Featured

Next.js cryptocurrency tracking dashboard with real-time price updates and market analytics

Next.jsTypeScriptChart.js+2

Interactive Todo List

Feature-rich todo application with local storage functionality

JavaScriptHTML5CSS3+1

BMI Calculator App

Responsive BMI calculator with health recommendations and visual feedback

ReactJSJavaScriptTailwind+2

MV Tooltip Library

Lightweight, customizable tooltip library for modern web applications

JavaScriptCSS3Open Source+1

Neon Font Customizer

CSS generator tool for creating custom neon text effects with copy-to-clipboard functionality

JavaScriptCSS3ReactJS+1

Outdoor Travel Landing

Adventure travel landing page with immersive visuals and booking integration

HTML5CSS3JavaScript+1

Cosmetics Landing Page

Elegant landing page for cosmetics brand with modern design and smooth animations

HTML5CSS3JavaScript+1

Nectar Field

Artistic landing page with creative design and interactive hover effects

HTML5CSS3JavaScript+1

Promo Site

Professional promotional page with interactive elements and nice pure CSS animations

HTML5CSS3JavaScript+1

Professional Experience

My journey as a frontend engineer, building impactful solutions across different domains.

Senior Frontend Engineer

Revelo

Dec 2021 – Apr 2025

Spearheaded the creation of a robust style guide to align branding across the entire application, enhancing UI/UX coherence, reducing new feature development time by 50% for Fullstack developers after implementing the shared component library.
Built a scalable, reusable component library from the ground up using Atomic Design principles and based on Tailwind UI, cutting UI inconsistencies by 80% by enforcing standardized design tokens and components.
Developed and maintained admin interfaces using React, TypeScript, and GraphQL, streamlining internal operations for the client's financial platform, reducing support requests from analysts by 30% to 40% after launching the custom dashboard.
Wrote automated tests (unit and integration) using tools like Jest and React Testing Library, resulting in improved code quality and reduced regression issues, also reducing the QA time spent in catching recurrent bugs.
Reduced build warnings and deprecated APIs by upgrading to the latest versions of React and related packages, also wiping out useEffect, useMemo and other React hooks common mistakes from the codebase.

ReactTypeScriptGraphQLNext.jsReduxZustandTailwindJestViteHighchartsRuby on Rails

Senior Frontend Developer

SevenApps LLC

Dec 2020 – Nov 2021

Worked on three projects with the most significant being FanHero, helping with their newest version for the webapp for clients, which has the need of handling millions of simultaneous connections.
Developed solutions for problems like requests, performance, security among other issues for high-traffic applications.
Built FanHero Portal Webapp, handling scalable architecture for massive user bases.
Developed Mindlab: MindZup - Gamified application for students with engaging user interfaces.
Created BestBarbers: Barber Management SaaS with comprehensive booking and management features.

ReactNext.jsReact NativeNode.jsReduxStyled ComponentsChakra UIGraphQLDockerGoogle Cloud

Frontend Developer

Nectar CRM

Nov 2018 – Dec 2020

Refactored the Webapp with the new UX/UI set, improving user experience and modernizing the interface.
Developed new functionalities to the main software, expanding CRM capabilities for regional customers.
Created personalized documentation to help new hired developers understand the applications architecture and codebase.
Helped developing the new Mobile Application using React Native, bringing CRM functionality to mobile devices.
Improved company's Backoffice app, streamlining internal operations and data management.
Solved bugs and maintained Nectar CRM's main web app, ensuring system stability and performance.

ReactReact NativeAngularJSVue.jsReduxNode.jsAzureJava 8HTML5CSS3Sass

Mobile Developer and Web Developer (Contractor)

Clubien

Jul 2020 – Dec 2020

Led Clubien's Mobile APP development as main Mobile Developer for Dublin-based wellness delivery startup.
Served as UI and UX primary responsible, designing intuitive interfaces for beauty and grooming service bookings.
Enforced reliable app performance and integrity standards, ensuring smooth user experience.
Improved Clubien's website and created landing pages for customers and professionals.
Co-developed Admin's interface with Rest integration to company API for streamlined operations.

React NativeReactNext.jsReduxJestTailwind CSSREST API

Frontend Developer

Actuar

Jul 2017 – Nov 2018

Led a team of developers applying SCRUM methodology and worked on the development of an ERP focused on gyms management and crossfit boxes.
Estimated effort for new demands and performed verification of software engineering artifacts such as requirements, design, implementation and testing.
Maintained training app and created responsive blogs and webpages for the company, also performing SEO optimization.
Delivered solutions for gym technology and web payment systems with focus on user experience.

Angular 2+Ionic 2TypeScriptJestAngularJSWordPressAzureHTML5CSS3SassSVG

Internship Software Developer

MetaTecnologia

Feb 2017 – Jul 2017

Worked on improvement of a product to control financial operations of mobile phone stores.
Developed payment system integration to federal government systems.
Gained experience as a Fullstack developer, handling entire web application development lifecycle.
Learned and implemented enterprise-level solutions for retail management systems.

JavaMongoDBJSPHTML5CSS3Bootstrap