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Juan EvangelistaJE
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Juan Evangelista

@juanevangelista

Front-End Engineer (5+ yrs) specializing in React, Next.js, TypeScript and Node.js. Experienced in AI workflows, MCP and high-performance apps.

Brazil
Message

I am a Front-End Software Engineer with 5+ years of experience building scalable web applications, high-traffic platforms, and modern digital products focused on performance, SEO, accessibility, and user experience. My core technical expertise centers around the JavaScript/TypeScript ecosystem, specializing in React.js, Next.js, Node.js, and modern styling architectures like Tailwind CSS and Styled Components.

Throughout my career, I have taken ownership of frontend architecture, modernized legacy platforms, and delivered measurable business results. At Lello Imóveis, I designed and built a custom React/TypeScript CMS (CMS-LELLO) from scratch for non-technical teams, led Core Web Vitals optimizations for competitive organic search rankings, and eliminated 100% of critical routing issues using Microsoft Clarity and observability practices. At TOOI, I spearheaded core frontend refactoring for ASICS LatAm e-commerce platforms (Brazil, Chile, Colombia), boosting page load speed by 40% and raising Lighthouse scores by 25 points.

Recently, I have adopted a fully AI-Augmented Development approach, leveraging Cursor, Claude, Prompt Engineering, and Model Context Protocol (MCP) workflows to accelerate development without compromising code quality. As an open-source contributor, I built an MCP incident orchestrator dashboard with Next.js, Node.js, and SQLite to unify telemetry from Sentry, Datadog, and AWS CloudWatch.

I am currently pursuing a Software Engineering degree at UniAmérica (100% online and flexible), providing complete availability for full-time remote roles. Across every project, my focus remains on solving complex challenges, building maintainable component systems, and connecting business goals with high-impact software solutions.

Experience

Work history, roles, and key accomplishments

LI
Current

Front-End Software Engineer

Lello Imóveis

Sep 2024 - Present (2 years 1 month)

Led strategic Technical SEO optimizations within the Next.js ecosystem, moving the corporate platform to the 2nd position in Google organic search in São Paulo for critical industry keywords. Resolved 100% of critical routing errors and user journey interruptions by implementing and analyzing real-time monitoring metrics using Microsoft Clarity and Sentry.

TI

Front-End Software Engineer

TOOI - Take off on Innovation

Mar 2023 - Sep 2024 (1 year 6 months)

Refactored the core architecture of the Asics Brazil e-commerce platform using modern JavaScript (ES6+), improving homepage load speed by 40% and increasing Google Lighthouse scores by 25 points. Contributed directly to the architecture, performance, and design system optimizations of ASICS Brazil.

FR

Full-Stack Developer

Freelance

Jan 2021 - Dec 2023 (2 years 11 months)

Delivered over 10 complex digital products from end to end while operating in Agile environments, ensuring high-fidelity design system implementation and product resilience through automated test coverage. Developed high-performance Web applications using React.js, TypeScript, Next.js, and Node.js environments.

Education

Degrees, certifications, and relevant coursework

UU

UniAmérica University

Bachelor's Degree, Software Engineering

2024 -

Pursuing a Bachelor's Degree in Software Engineering, expected to graduate in 2027.

DI

DIO

English 4 Tech, English

2024 -

Currently pursuing English 4 Tech certification, ongoing since 2024.

RO

Rocketseat

React Router + AI, React Router + AI

2026 - 2026

Completed React Router + AI certification in 2026.

RO

Rocketseat

Prompt Engineering, Prompt Engineering

2026 - 2026

Completed Prompt Engineering certification in 2026.

RO

Rocketseat

Neural Networks and Deep Learning, Neural Networks and Deep Learning

2026 - 2026

Completed Neural Networks and Deep Learning certification in 2026.

RO

Rocketseat

React.js Advanced Course, React.js

2026 - 2026

Completed React.js Advanced Course certification in 2026.

RO

Rocketseat

AI Development: Claude Code, Codex, and Cursor, AI Development

2026 - 2026

Completed AI Development: Claude Code, Codex, and Cursor certification in 2026.

RO

Rocketseat

User Experience: Front-End Development, User Experience

2025 - 2025

Completed User Experience: Front-End Development certification in 2025.

DI

DIO

JavaScript Developer Certification, JavaScript

2024 - 2024

Completed JavaScript Developer Certification in 2024.

UD

Udemy

React.js & Next.js Advanced Course, React.js & Next.js

2024 - 2024

Completed React.js & Next.js Advanced Course in 2024.

VA

VTEX & Gama Academy

Hiring Coders, Full-Stack Development

2022 - 2022

Completed Hiring Coders Full-Stack Development program in 2022.

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