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Gabriel – React, Node.js, PostgreSQL, experts in Lemon.io

Gabriel

From Canada (UTC-4)flag

Full-stack Web Developer|Senior
Lemon.io stats
3
projects done
785
hours worked
2
offers now 🔥

Gabriel – React, Node.js, PostgreSQL

Gabriel is a Senior Full-Stack Web Developer, CTO, and the founder of his own startup. His expertise centers on Node.js and React development, though he has worked with multiple tech stacks throughout his career. With valuable experience in building MVPs and systems from scratch, Gabriel has also launched several personal projects—some of which are AI-powered applications. Now, he is ready to bring both technical excellence and leadership to your team.

10 years of commercial experience in
Adtech
AI
Analytics
Banking
Beauty
Business intelligence
Communications
Customer support
Data analytics
E-learning
Fintech
Information services
Scientific research
Platforms
Gaming software
Main technologies
React
5.5 years
Node.js
5.5 years
Additional skills
PostgreSQL
AWS
Ruby
Ruby on Rails
Angular
React Native
Google API and Services
MySQL
Express.js
Next.js
Remix
Typescript
Material UI
Tailwind CSS
Firebase
Stripe API
Prisma
Supabase
Svelte.js
TipTap
Storybook
Cloudflare
WebSocket
Vite
LLM
RAG
Testimonials
#31050635390FE dev for a startup streamlining platform
"It’s been going great so far with Gabriel. I think we are hitting all of those points and the biggest difference I see from other developers is Gabe’s motivation and ability to work through the ambiguity of a startup."
Direct hire
Possible
Ready to get matched with vetted developers fast?
Let’s get started today!

Experience Highlights

Lead Research Engineer
Mar 2025 - Ongoing5 months
Project Overview

This extension creates additional contextual content to improve the internet experience for blind users. It's Garbiel's pet project, part of his Master's research.

Responsibilities:
  • Researching cutting-edge technologies;
  • Developing and optimizing code;
  • Managing a team of 3 research engineers;
  • Writing papers on findings.
Project Tech stack:
JavaScript
Chrome extensions
Safari extension
LLM
Machine learning
Founder
Jan 2025 - Ongoing7 months
Project Overview

This is a RAG-powered AI for complex rulebooks and manuals focused on gaming.

Responsibilities:
  • Developing the platform's first MVP (1-month timeline);
  • Onboarding a client for POC testing post-MVP;
  • Finalizing the first publicly accessible version.
Project Tech stack:
Next.js
Prisma
PostgreSQL
Stripe API
RAG
LLM
Machine learning
Tech Lead
Aug 2022 - Feb 20252 years 6 months
Project Overview

Was responsible for the maintenance of the core platform - a platform that empowers companies to create unique communication experiences for their customers.

Responsibilities:
  • Led a team of 10 people responsible for creating and maintaining micro front ends and backends;
  • Redesigned the single SPA structure to have better performance;
  • Created AI interfaces using ChatGPT.
Project Tech stack:
Vue.js
React
Microservices
Java
Node.js
Svelte-kit
Svelte.js
Lead Developer
Dec 2022 - Jan 20252 years 1 month
Project Overview

Developed the first version of the platform, which helps to identify best-fit federal opportunities with their AI-powered recommendation engine that continuously learns from customers' past business performance.

Responsibilities:
  • Created a new platform using Tailwind, Nextjs, and Postgres in 3 months;
  • Worked on projects involving AI and Machine Learning.
  • Worked with the founder to create the backlog, tech strategy, and new features.
Project Tech stack:
Tailwind CSS
React
Next.js
PostgreSQL
OpenAI
Firebase
TipTap
CTO
Jan 2020 - Aug 20222 years 7 months
Project Overview

A platform where creators can engage, monetize and measure their audiences. Gabriel is the CTO of the platform, and now he is selling his part of the business and seeking to start a path that will lead to working with companies abroad.

Responsibilities:
  • Led a team of developers to create tools for reaching, engaging, and monetizing any community or audience using Javascript with Node.js and React.js;
  • Developed and aligned the company’s technology resources with the organization’s short and long-term goals;
  • Conceptualized and architected infrastructure solutions instrumental in meeting strategic goals organization-wide;
  • Assembled development, quality assurance, and implementation methodologies, processes, and teams to support a demanding customer base and highly aggressive business goals;
  • Directed the development and implementation of infrastructure in AWS using Terraform as IAC.
Project Tech stack:
Node.js
React
PostgreSQL
Express.js
AWS
Stripe API
Tailwind CSS
TipTap
Lead Developer
Aug 2019 - Feb 20206 months
Project Overview

An educational platform for beauty artists. The project is an initiative of the company, the leader in cosmetic products in LATAM.

Responsibilities:

Gabriel was mainly responsible for leading a team that was making the first versions of the platform, which contained video on demand, streaming, and monetization.

  • Contributed to the team as a Lead Developer;
  • Designed and implemented the initial of the platform;
  • Hired a team of 3 people to be part of the development team;
  • Was responsible for the infrastructure in the cloud using AWS and Terraform.
Project Tech stack:
React
Ruby on Rails
AWS
MySQL
Streaming
Vimeo
Tech Lead
Jan 2019 - Aug 20196 months
Project Overview

An investment firm that is growing in Brazil. They hired Usabit, the company where Gabriel worked as a consultant for creating the Design and developing the first version of their App. Their objective is to start their path on digital platforms giving their users the ability to check the available investments and to put money into them.

Responsibilities:
  • Deployed a 4 people team to develop the front end of the app;
  • Created the architecture for the React Native App;
  • Deployed an Agile process to archive the 6-month Road Map;
  • Followed the developers through their coding, helping them with the challenges that they had;
  • Created a deployment strategy for the app stores.
Project Tech stack:
React Native
Google API and Services
Redux
Developer & Co-Founder
Dec 2016 - Jul 20192 years 7 months
Project Overview

The biggest database of the Brazilian public financial paper Precatório. The government issues those titles in each city in Brazil. The product captures data from all papers in all cities, transforms this data into structured data, and sells insights to banks and investment firms.

Responsibilities:
  • Served as a hands-on lead for a team of developers responsible for building the product using Ruby on Rails and Angular 2, and AWS to host services and deploy a Data Lake for the big data system;
  • Coordinated project meetings involving test and development teams to monitor module progress;
  • Developed technical specification documents and participated in meetings with business and testing teams to review functional and technical documents;
  • Reviewed technologies and software for weaknesses and developed improvements to capacity, availability, and efficiency.
Project Tech stack:
Ruby on Rails
Ruby
Selenium
Angular
WordPress
AWS
PostgreSQL

Education

2021
Information Systems
Bachelor's

Languages

Spanish
Intermediate
Portuguese
Advanced
English
Advanced

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