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Location

Brazil

Rate

$40  / per hour

Years of experience

4

About

Full-stack Developer (Node.js, React, Nestjs, Next.js) | Smart Contracts Developer (Solidity) | ChatGPT developer

Tech Stack

ChatGPT, Database, Database Management System (DBMS), DevOps, JavaScript, Microservice architecture, Next.js, Node, Node.js, PostgreSQL, Python, React, React Native, SQL, Web Development

Employment history

Senior Full-Stack Developer, Toptal May 2020 - Present

Full-Stack Developer (JavaScript stack – React, React Native and Node.js).
* Developed a ChatGPT app, connected to a SQL database, to answer questions about the client’s data;
* Created a Data Warehouse using Data Factory and Postgresql to transform text data into a searchable and indexed database for ChatGPT;
* Developed a crowdfunding website (front and back-end) for a client with Paypal integration.
* Developed a game streaming solution using Pixel-Streaming plugin (Unreal Engine 4), hosted in AWS.
* Developed an LMS platform with a serverless and microservice-architecture back end, several MySQL databases, and a Firestore database for statistics.

Integrations Engineer, Orb Collective Inc. Oct 2022 - July 2023

Developing solidity smart contracts to integrate partners to the Balancer protocol.

Senior Full-Stack Developer, Payer Sciences Oct 2020 - Oct 2022

Responsible for maintaining PayerSciences platforms, as well as architecting new modules addressing business requirements.
Projects/Improvements:
* Introduced real-time messaging using Service Bus (for a notification system, but also to allow services to communicate with each other)
* Introduced Integration and E2E tests
* Improved API response from 10 seconds to less than 500 ms (TypeORM / GraphQL optimizations)
* Other improvements in the Frontend / Backend / Devops.
Tech Stack:
– Front-end: React/React Hooks/Context API
– Back-end: Node.js / Nest.js / TypeORM
– Testing: Jest for Unit/Integration tests, CyPress for e2e tests
– DB: Postgres
– Cloud Solution: Azure (Kubernetes / Storage / App Services / App Insights / Service Bus)

Education history

Universidade Federal de Santa Catarina 2007-2013 Bachelor’s in Engineering
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