Leonardo Coutinho

Design and maintain scalable integration workflows connecting external platforms with internal systems. Build and operate complex data integration pipelines, develop new Rails features, and partner with engineering and product teams to resolve production issues.

Customized and extended the OHIF Viewer for enterprise medical imaging workflows using React and Cornerstone3D, as an independent consulting engagement. Integrated the viewer with DICOMweb based PACS and imaging backends, improving interoperability across systems.

Specialized in large scale data processing using Node.js and Ruby on Rails, with Node.js scrapers for lead generation feeding Salesforce and Rails for downstream data processing. Designed and optimized data pipelines and integrated advanced analytics into scalable web applications.

Designed and developed LMS features using TypeScript, Angular, GraphQL, and Ruby on Rails, improving user engagement. Built and optimized a custom SQL based reporting system in Rails with scheduling and recurrence, and mentored junior developers.

Built and launched features for a property management platform used by over 2,200 clients, using React, TypeScript, and Ruby on Rails. Led bug fixes and performance improvements, owned server maintenance and database optimization, and managed a development team for two years.

Built and rigorously tested RESTful APIs and web applications within a software house model, working across multiple client engagements. Played a key role in two major projects, Pfizer PROConnect and Loghub, owning end to end backend development.

Contributed to a receivables system integrating major financial institutions, including JPMorgan, Tokyo Bank, Citibank, and leading Brazilian banks. Implemented new functionality and enhanced the system's architecture on a .NET based technology stack, managing data handling, security, and efficiency using Microsoft SQL Server.

Bachelor of Science in Information Systems from Centro Universitario UNA, completed in 2018.