// résumé · curriculum vitae

Leonardo Lima de Vasconcellos

Senior Full-Stack Engineer

leonardolimadevasconcellos@gmail.com +55 41 99215-1301 in/llvasconcellosJoinville · Santa Catarina · Brazil

Download PDF · EN Versão em Português Print-ready PDF · updated 2026

I'm a senior full-stack engineer who's been shipping for the web since 2005 — around 70 projects across five eras of the technology. I was elected technical lead on an Ebola-response records system with Doctors Without Borders, helped scale high-concurrency SaaS at Email on Acid, and contributed to Brazil's top-ranked smart city in Itajaí. My specialty is the systems where failure has real consequences: I take them — mission-critical, often tangled — and make them scale, clean and fast and built to last. I'm still hands-on every day, now AI-assisted, and I work in both English and Portuguese. Off the clock I play bass, drums, and guitar — same discipline and timing, different instrument.

~20years shipping

~70projects

5tech eras

12roles

// five eras of the web — still writing code

2005

Flash · Flex

2008

PHP · Zend

2011

Java · Android

2014

.NET · C#

2019

React · Next · AI

Experience

Filter by tech

Showing 12 of 12 roles

Apr 2025 — Jan 20269 mos

React

Next.js

Node.js

PostgreSQL

Key role in the digital transformation of Brazil's top-ranked smart city, building full-stack citizen services.
Seamless front-ends in React and Next.js over a high-concurrency Node.js backend and a highly-available PostgreSQL data layer.
AI-assisted development with Cursor and Claude Code.

Jan 2024 — Apr 20251 yr 3 mos

TypeScript

React

Next.js

Node.js

Tailwind

AI-assisted builds of modern client sites with TypeScript, React, Next.js, Zustand, Zod, ShadCN and TailwindCSS.
RESTful APIs with Node.js, Express and Drizzle ORM.

Sep 2019 — Sep 20234 yrs

React

Node.js

PHP

PostgreSQL

MongoDB

Architected and scaled a full-stack SaaS cloud app across React, Node.js (Express) and PHP (CodeIgniter) for high-concurrency environments.
Spearheaded a critical legacy refactor — big gains in scalability and readability while slashing technical debt.
Optimized data with Redis caching and a hybrid PostgreSQL + MongoDB architecture; cut API latency and page-load times.

Mar 2019 — Sep 20196 mos

React

PHP

PostgreSQL

AWS

Nov 2011 — Mar 20197 yrs 4 mos

React

Node.js

PHP

PostgreSQL

Sep 2015 — Mar 20166 mos

Android

Java

Python

MySQL

Android/Java developer on Project Buendia — an Android app + Linux OpenMRS server helping clinicians fight Ebola and malnutrition.
Joined as a volunteer; selected from 1,000+ candidates, then elected technical lead — code reviews, technical guidance, features and fixes.
Project Buendia is an open-source medical-record system created by MSF, Google Crisis Response and volunteers for the 2014 West-Africa Ebola epidemic.

Apr 2015 — Jul 20153 mos

Java

JavaScript

Nov 2014 — Feb 20153 mos

.NET

Aug 2014 — Nov 20144 mos

PHP

JavaScript

Apr 2011 — Nov 20117 mos

Java

JavaScript

Feb 2010 — Apr 20111 yr 2 mos

PHP

JavaScript

PostgreSQL

Jul 2005 — Feb 20104 yrs 7 mos

PHP

JavaScript

PostgreSQL

MySQL

// core stack

TypeScript

React

Next.js

Node.js

Java

PHP

PostgreSQL

Python

Android

MySQL

Tailwind

Skills

// languages

TypeScriptJavaScriptJavaPHPPythonC#HTMLCSS

// frameworks & tools

ReactNext.jsNode.jsNest.jsZustandReact QueryTailwindCSSShadCNZodDrizzle ORMBetter AuthJestJava SpringJBoss RESTEasyLaravelZendFrameworkBootstrapjQueryWordPressMagentoGit

// databases

PostgreSQLMySQLMSSQLMongoDBRedisOracle

// methodologies

AgileScrumXPClean Code

Languages

PortugueseNative

EnglishFluent · TOEFL B1

SpanishConversational

Education

2020

Master's, Software Engineering

UTFPR · 2020 · incomplete

2018

Postgraduate, Project Management

UNICESUMAR · 2018 — 2019

2011

Bachelor's, Computer Science

UDESC · 2011 — 2017

Links

github.com/llvasconcellos github.com/llvasconcellos2 leonardo-vasconcellos.vercel.app

Download PDF · EN