Evelio Caceres is a Director of Engineering with 13 years of experience building high-performance mobile platforms and leading Trust & Safety, media, and client productivity teams across top consumer apps. He has driven measurable improvements at scale—shipping bytecode and app-size reductions, cutting startup time, and bootstrapping teams and infrastructure at Instagram, WhatsApp, Snap, Lyft and other startups. A pragmatic hands-on leader, Evelio mixes deep Android expertise (notable contributions to Picasso, Redex and the popular Scissors image-cropping library) with systems-level optimizations such as build and caching tooling that materially sped up engineering velocity. He’s comfortable hiring and scaling global teams, owning cross-functional metrics, and presenting technical strategy to executives while still contributing code that prevents memory leaks, improves UI responsiveness and tightens authentication and integrity systems. Based in the San Francisco Bay Area, Evelio blends product-focused engineering with open-source craftsmanship and a track record of turning large legacy codebases into lean, testable platforms.
13 years of coding experience
16 years of employment as a software developer
Databases Specialist Database programming, Databases Specialist Database programming at Universidad Pedagógica y Tecnológica de Colombia
Contributions:46 commits, 38 PRs, 43 pushes in 11 months
Contributions summary:Evelio contributed to the `scissors` Android image cropping library by implementing new features and fixing bugs. They added support for using framework Fragments for image picking and addressed issues related to image loading and animation. Code changes included modifications to `CropView`, `CropViewExtensions`, and `TouchManager` classes to enhance functionality and resolve reported issues.
In-layout notifications. Based on Toast notifications and article by Cyril Mottier (http://android.cyrilmottier.com/?p=773).
Role in this project:
Mobile Developer (Android)
Contributions:8 commits in 2 days
Contributions summary:Evelio primarily contributed to the `android-appmsg` library, an Android library for in-layout notifications. Their work focused on improving the library's functionality and lifecycle management, addressing potential memory leaks, and adding features. Key changes include refactoring the code to prevent activity leaks and adding support for custom animations and sticky notifications. This indicates a strong understanding of Android development best practices and UI/UX principles within the Android framework.
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