Maurício André Cinelli
Verified Expert in Engineering
OpenAI GPT-4 API Developer
Chapecó - Santa Catarina, Brazil
Toptal member since January 22, 2021
Mauricio is a seasoned full-stack web developer with 12 years of experience, specializing in Ruby on Rails and prominent JavaScript frameworks like React, Ember.js, and Vue. His expertise extends to building chat systems from scratch and implementing AI assistants for work-related tasks using OpenAI's API. With a strong track record in startups and small to medium-sized companies, Mauricio excels in adapting to new environments and delivering top-notch web solutions.
Portfolio
Experience
- CSS - 12 years
- JavaScript - 12 years
- HTML - 12 years
- Continuous Integration (CI) - 8 years
- Ruby on Rails (RoR) - 8 years
- React - 4 years
- React Native - 2 years
- OpenAI GPT-4 API - 1 year
Availability
Preferred Environment
JavaScript, CSS, Continuous Integration (CI), React, Ruby on Rails (RoR), OpenAI GPT-3 API, OpenAI GPT-4 API, Shopify, Stimulus
The most amazing...
...thing I built was a GPS integration for customers to see service providers' locations, like Uber. The project was almost solo and it generated 1M ARR in 1 year.
Work Experience
RoR Developer
Brio Commerce Inc.
- Upgraded test coverage of one of the applications from 45% to 85%.
- Updated Shopify API versions across different apps.
- Implemented new features on the cart and checkout experiences, integrating with other apps and flows.
- Improved database query speed from minutes to seconds.
- Helped achieve Built for Shopify status across two apps.
- Managed and improved AWS infrastructure and fixed bottlenecks that had brought the app downtime during spikes.
Senior Full-stack RoR Developer
Housecall Pro
- Developed an integration with home insurance to generate jobs for service providers.
- Created new improvements to public-facing APIs used by many partners.
- Oversaw product launches and A/B testing with thousands of users using LaunchDarkly.
- Helped define features and goals for the product over quarters.
- Managed a small team of developers devoted to integrations.
- Launched a GPS tracking integration that provided customers with an Uber-like experience to see the location of service providers. This project, which I almost soloed, led to one million ARR in one year.
Senior Full-stack Developer
Bit Zesty
- Maintained a wide array of Ruby on Rails applications using JavaScript frameworks, performing security upgrades, version upgrades, and implementing new features on top of an existing codebase.
- Created continuous integration pipelines, including testing and deployment to many clients, using different services like CircleCI, GitlabCI, and GitHub actions.
- Audited and adapted websites and applications to pass web accessibility standards and audits by the Gov UK team.
- Worked alongside designers to launch websites and landing pages for clients in HTML, CSS, JavaScript, and sometimes WordPress.
Senior Full-stack Developer
Duo Soluções
- Developed websites for companies that bought the company's desktop applications, integrating them via custom APIs to display relevant information on the websites.
- Implemented a newsletter system, including a Node.js service to handle the delivery of millions of emails per month.
- Developed an application to manage financial loans and credit for a local company.
- Configured a continuous integration pipeline for the newsletter system.
Experience
Tax Declaration for UK Residents
Application to Support People with Neuromuscular Diseases
https://nmd.bridgesselfmanagement.org.uk/The web application consists of a Ruby on Rails custom CMS and API, with a front end developed in React.
The mobile application in React Native consumes this API, and the application can be used offline.
Both applications were audited for accessibility and user-tested with blind people to ensure they were usable.
Local Producers Marketplace
Education
Bachelor's Degree in Computer Science
Federal University of Fronteira Sul - Chapeco, Brazil
Skills
Libraries/APIs
React, Vue 2, Node.js, Stripe, Shopify API
Tools
Spree
Languages
CSS, JavaScript, HTML, PHP
Frameworks
Ruby on Rails (RoR), React Native, Ember.js, Laravel, Stimulus
Paradigms
Continuous Integration (CI), Testing
Platforms
Linux, Shopify, WordPress, Heroku, Amazon Web Services (AWS)
Other
Accessibility, User Experience (UX), Email Campaigns, Responsive Email Templates, Recurring Payments, APIs, Integration, OpenAI GPT-3 API, OpenAI GPT-4 API
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