César Quintero
Principal Software Engineer I at Elastic
Spain
Summary
🤩
Rockstar🎓
Top SchoolCésar Quintero is a Principal Software Engineer based in Spain with six years of professional experience building reliable backend and mobile integrations at Elastic and prior senior roles across Travelport, Synchronoss, and Toast. He blends deep Java/Android expertise with observability and APM work—contributing notable features to Elastic's popular Kibana project such as mobile APM dashboards and average launch-time metrics. César also enhanced Android support in the widely used Byte Buddy Gradle plugin, improving instrumentation and compatibility across AGP versions. He excels at bridging platform-level tooling and product-facing analytics, applying pragmatic automation to complex build and runtime problems. Colleagues describe him as a hands-on engineer who surfaces hard-to-see performance signals into actionable dashboards.
6 years of coding experience
8 years of employment as a software developer
Ingeniería de Sistemas Desarrollo de software, Ingeniería de Sistemas Desarrollo de software at UNEFA
Spanish, English
Github Skills (27)
javascript10
android-gradle-plugin10
performance-monitor10
ios10
mobile-development10
instrumentation10
application-monitoring10
kibana10
java10
apm10
ag10
javas10
gradle-android-plugin10
automation10
android10
Programming languages (15)
Github contributions (5)
raphw/byte-buddy
Jul 2022 - Jan 2023
Runtime code generation for the Java virtual machine.
Role in this project:
Back-end Developer & Automation Engineer
Back-end Developer & Automation EngineerContributions:140 commits, 11 PRs, 11 comments in 5 months
Contributions summary:César primarily contributed to the development and enhancement of Android support within the Byte Buddy Gradle plugin. They introduced and refined features related to Android instrumentation, specifically focusing on integrating the plugin with the Android build process. The user implemented transformations, service initialization, and configuration improvements. Their work involved modifying and adapting the plugin for compatibility with different Android Gradle Plugin (AGP) versions and integrating with the Android artifact system.
instrumentationcode-generationdynamic-proxyjava-libraryjava-agent
elastic/kibana
Nov 2022 - Mar 2025
Your window into the Elastic Stack
Role in this project:Mobile Developer
Mobile DeveloperContributions:21 reviews, 10 PRs, 6 pushes in 2 years 4 months
Contributions summary:César contributed to the Kibana repository by implementing features related to the APM mobile dashboards, specifically focusing on the "Most launches" panel. The contributions included modifying test files to incorporate new data points related to mobile app launches and integrating the display of the "Most launches" panel within the mobile service overview. Additionally, the user worked on adding the average launch time to the mobile dashboard. The user appears to have a good understanding of Kibana's APM integration.
elasticdashboardskibanaobservabilitywindow
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