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Mateus – React, AWS, Node.js, experts in Lemon.io

Mateus

From Brazilflag

Full-stack Web Developer|Middle
Front-end Web Developer|Senior
Back-end Web Developer|Middle

Mateus – React, AWS, Node.js

Mateus is a Full-Stack Developer with 6 years of experience, specializing in Node, React, and Next.js, with a strong focus on performance and scalability. He has experience with AWS EC2, CI/CD, API versioning, and designing systems that reliably handle events and databases. He is passionate about continuous learning and turning complex technical challenges into real business value. Mateus thrives in fast-paced, AI-driven environments where quick, thoughtful decisions can make a meaningful impact. In projects, he combines technical expertise, strategic thinking, and a collaborative, team-oriented approach.

5 years of commercial experience in
AI
Analytics
Consulting services
Data analytics
SaaS
Main technologies
React
6 years
AWS
2 years
Node.js
6 years
Typescript
6 years
Next.js
6 years
Additional skills
Python
JavaScript
Tailwind CSS
Material UI
Microsoft Azure
Direct hire
Possible
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Experience Highlights

Senior Front-end Developer
Jul 2025 - Oct 20253 months
Project Overview

An intelligent tool that interprets dashboards or screenshots, explains KPIs in plain language, and provides insights, risks, and actionable recommendations to help non-technical users understand and act on their data.

Responsibilities:
  • Built the entire front-end flow for uploading dashboard screenshots/URLs and visualizing the AI-generated analysis;
  • Designed the UI/UX for the analyzer module using Next.js + Tailwind, focusing on clarity, readability, and information hierarchy;
  • Implemented the data visualization layer for extracted KPIs, trends, anomalies, and recommendations;
  • Created reusable components for metric cards, AI explanations, loading states, and error handling;
  • Integrated seamlessly with the backend AI pipeline via tRPC, ensuring type-safe requests and responses;
  • Improved usability by adding progress indicators, step-by-step feedback, and clean result layouts;
  • Optimized client-side performance, reducing render cost on pages with heavy data;
  • Collaborated closely with backend engineers to define payload structures and refine the AI output UI;
  • Conducted user testing with internal teams to refine UX and improve interpretation clarity.
Project Tech stack:
Next.js
FastAPI
Tailwind CSS
React
Senior Full-Stack Developer
Dec 2023 - Jul 20251 year 6 months
Project Overview

A project management platform designed to accelerate developer growth, featuring collaborative project work, progress tracking, mentor assignment, and a credits-based reward system.

Project gallery:
Portfolio example for Code Wise by Mateus, Senior fullstack developer
Portfolio example for Code Wise by Mateus, Senior fullstack developer
Portfolio example for Code Wise by Mateus, Senior fullstack developer
Portfolio example for Code Wise by Mateus, Senior fullstack developer
Responsibilities:
  • Designed and implemented the complete project architecture;
  • Developed the user experience from the ground up;
  • Selected and configured the project infrastructure;
  • Built and managed the end-to-end marketing system integration.
Project Tech stack:
React
Typescript
Next.js
tRPC
Prisma
MySQL
Vercel
OAuth
Tailwind CSS
Stripe API
Senior Full-Stack Developer
Jul 2024 - Jul 20251 year
Project Overview

An internal analytics platform that centralizes data to give executives real-time insights, helping management track revenue, efficiency, SLAs, and team performance with customizable dashboards and automated reporting.

Responsibilities:
  • Implemented reusable UI components and data-visualization widgets for charts, KPIs, and trend analysis;
  • Created a highly optimized GraphQL data layer with caching and partial pagination for real-time metrics;
  • Ensured performance and UX quality, reducing dashboard load time to under 1.2s;
  • Provided guidance to junior developers and drove best practices across the codebase.
Project Tech stack:
Next.js
React
Typescript
GraphQL
Azure Functions
Azure DevOps
NoSQL
Material UI
Python
FastAPI
Senior Full-Stack Developer
Dec 2023 - Jul 20251 year 6 months
Project Overview

The platform streamlines the discovery phase by quickly assessing a company’s operational maturity through a smart questionnaire, generating risk levels, recommendations, and a structured roadmap to reduce consulting hours.

Responsibilities:
  • Designed and implemented the full architecture using Next.js, tRPC, and FastAPI microservices;
  • Built the dynamic diagnostic form builder with conditional questions and scoring logic;
  • Implemented automated scoring, maturity level calculations, and recommendation engine;
  • Created PDF report generation with personalized branding and detailed company insights;
  • Developed the admin dashboard for consultants to manage questions, categories, and evaluation models;
  • Built reusable UI components with Tailwind + shadcn and improved usability across the platform;
  • Deployed and optimized the system on Vercel, ensuring fast load times and stable performance;
  • Collaborated directly with consultants to translate their business methodology into a digital product.
Project Tech stack:
Next.js
React
Typescript
tRPC
FastAPI
Vercel
Tailwind CSS

Education

2023
IT MANAGEMENT
Associate Degree

Languages

Portuguese
Advanced
English
Advanced

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