Gustavo Lelis
Senior Software Engineer at ASCEND Health Information Technology
Minas Gerais, Brazil
Summary
🤩
Rockstar🎓
Top SchoolGustavo Lelis is a senior software engineer with 11 years of experience specializing in front-end development for medical imaging and healthcare systems, currently at ASCEND Health Information Technology in Minas Gerais, Brazil. He has deep hands-on expertise with React, Webpack, Node.js and DICOM tooling, contributing significant fixes and feature work to cornerstonejs and the OHIF zero-footprint DICOM viewer. Gustavo pairs UI craftsmanship with DevOps skills—upgrading build pipelines, enabling hot reloading, and stabilizing CI/test environments—plus practical AWS/Kubernetes experience from large VNA projects at Hospital Israelita Albert Einstein. He’s comfortable across the stack, having delivered frontend interfaces, backend integrations, and infrastructure automation while mentoring teams and shaping early agile practices. Notably, his open-source commits improved medical-imaging tools by adding mobile support, ROI refactors, and more accurate DICOM pixel handling, reflecting a focus on reliability and real-world clinical use.
11 years of coding experience
10 years of employment as a software developer
Bachelor in Computer Science, Bachelor in Computer Science at Universidade Federal de Viçosa
Portuguese, English
Github Skills (16)
uid10
medical-imaging10
javascript10
cornerstone10
dicom10
front-end-development10
ui-design10
webpacker10
react10
webpack10
k10
testing10
html8
cicd8
devops8
Programming languages (2)
Github contributions (5)
cornerstonejs/cornerstoneTools
Mar 2018 - Jun 2019
A framework for tools built on top of Cornerstone.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:118 commits, 50 PRs, 48 pushes in 1 year 2 months
Contributions summary:Gustavo primarily contributed to the development of the front-end tools and components used in the cornerstonejs/cornerstonetools repository. They fixed issues in the freehand tool, addressed inconsistencies in the placement of shapes and added statistical calculations, and made improvements to the magnify tool, including mobile support and dependency removal. The user also refactored and migrated the elliptical and rectangle ROI tools, bringing them into the v3 format.
javascriptcornerstonedicomnci-itcron-top
OHIF/Viewers
May 2018 - May 2020
OHIF zero-footprint DICOM viewer and oncology specific Lesion Tracker, plus shared extension packages
Role in this project:Front-end Developer
Front-end DeveloperContributions:199 commits, 79 PRs, 326 pushes in 2 years
Contributions summary:Gustavo primarily focused on enhancing the user interface and functionality of the OHIF viewer. Their commits involved bug fixes related to the display and interaction of elements, such as the save button and measurement display. They also implemented new features, like the ability to export measurements to CSV files and adding new tools for measurement display. Moreover, the user contributed to the integration of new components and refactoring of existing ones, improving the overall user experience and expanding the viewer's capabilities.
nci-qintrackermedicalreactjszero-footprint
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