Dennis Francis
Conversion And Training Consultant at ExtraMile Convenience Stores LLC
Pasadena, California, United States
Summary
🤩
Rockstar🎓
Top SchoolDennis Francis is a data-driven conversion and training consultant with 13 years of experience blending hands-on data science, retail operations, and franchise management. He leverages SQL, Python, ML (including computer vision) and cloud big-data tools to turn point-of-sale and merchandising signals into actionable business outcomes for convenience stores. A former 7‑Eleven franchisee and store readiness specialist, he pairs measurable retail gains (double-digit sales growth and award-winning execution) with field training and technology deployment expertise. Dennis contributes to prominent open-source projects like LibreOffice and Collabora Online, focusing on both front-end UX improvements and Calc core functionality—an uncommon cross-section of applied ML, full-stack development, and production-quality QA. Based in Pasadena, he combines entrepreneurial retail instincts with practical data engineering to accelerate store openings, conversions, and operator adoption of systems.
13 years of coding experience
1 year of employment as a software developer
Bachelor of Science - BS, Business Administration, Bachelor of Science - BS, Business Administration at University of Southern CaliforniaAalto University
Spanish
Github Skills (15)
css10
javascript10
c-language10
libreoffice10
user-interface10
right-to-left10
cprogramming-language10
ui-design10
leaflet10
canvas10
html9
unit-testing9
data-structures8
data-structure8
algorithms7
Programming languages (3)
Github contributions (5)
CollaboraOnline/online
Dec 2020 - Jan 2023
Collabora Online is a collaborative online office suite based on LibreOffice technology. This is also the source for the Collabora Office apps for iOS and Android.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:78 reviews, 671 commits, 238 PRs in 2 years 1 month
Contributions summary:Dennis primarily contributed to the user interface by implementing features related to zoom animation within the application. The commits reveal the addition of support for pinch zoom, including modifications to the canvas tile layer, and improvements for the display of grid and overlays. The user was involved in integrating with the rendering of the page content and ensured features such as the selection markers behave appropriately during zoom transitions.
collaboracpplibreofficeproductivityjavascript
LibreOffice/core
Apr 2015 - Jan 2023
Read-only LibreOffice core repo - no pull request (use gerrit instead https://gerrit.libreoffice.org/) - don't download zip, use https://dev-www.libreoffice.org/bundles/ instead
Role in this project:Back-end Developer
Back-end DeveloperContributions:743 commits in 7 years 10 months
Contributions summary:Dennis contributed to LibreOffice core, focusing on Calc-related functionality. They implemented features like handling print ranges, managing comment IDs, and ensuring correct RTL rendering in Calc, including handling coordinate transformations for shapes. The user also addressed issues related to cell annotation copy/paste operations, and ensuring proper validation behaviors and adjustments to edit areas. They added unit tests to cover their changes, indicating a focus on quality assurance.
libreofficedevzippull-requesttdf
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