Vasil Trifonov
Director Of Engineering at Payhawk — Spend and Scale. Globally.
Sofia, Sofia-City, Bulgaria
Summary
🤩
Rockstar🎓
Top SchoolVasil Trifonov is a Director of Engineering based in Sofia with 11 years of professional experience leading backend and mobile teams and shipping production-grade platforms. He has progressed from hands-on development in C#, Java and native mobile runtimes to managing cross-functional teams building products like Fiddler Everywhere and Payhawk, blending cloud (.NET Core, Node.js, AWS) and embedded runtime work. A long-time contributor to the NativeScript Android runtime and V8 integrations, he brings deep expertise in native mobile internals and performance troubleshooting alongside product delivery. Known for turning complex debugging and runtime challenges into maintainable solutions, he also maintains a personal technical blog and has a strong academic foundation with a master’s in Computer Technology from the Technical University of Sofia.
11 years of coding experience
18 years of employment as a software developer
Masters Computer Technology/Computer Systems Technology, Masters Computer Technology/Computer Systems Technology at Technical University of SofiaVasil Kantchev, Vratsamathematics, mathematics at High School of Math and Nature Studies, Vratsa
English
Stackoverflow
1,857reputation
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20answers
3questions
joomla
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Github Skills (27)
tabstrip10
ios10
nativescript10
java10
android-developer10
bottom-tabs10
javas10
android10
tablist10
android-developers10
mobile10
joomla9
debug9
debugging9
cross-platform9
Programming languages (11)
Github contributions (5)
NativeScript/android
Mar 2018 - Feb 2020
NativeScript for Android using v8
Role in this project:
Back-end Developer
Back-end DeveloperContributions:476 commits, 265 PRs, 373 pushes in 1 year 10 months
Contributions summary:Vasil's contributions focused on updating and integrating V8 JavaScript engine components within the NativeScript Android runtime. Their work included modifying V8 code to remove a while cycle, updating to newer V8 versions, and fixing build issues related to inspector functionality. The changes involved updates to various core libraries and components, impacting the runtime's interaction with V8 and its inspector debugging features.
javascriptcoreruntimeandroidnativescriptcross-platform
NativeScript/NativeScript
Apr 2018 - May 2020
⚡ Empowering JavaScript with native platform APIs. ✨ Best of all worlds (TypeScript, Swift, Objective C, Kotlin, Java, Dart). Use what you love ❤️ Angular, Capacitor, Ionic, React, Solid, Svelte, Vue with: iOS (UIKit, SwiftUI), Android (View, Jetpack Compose), Dart (Flutter) and you name it compatible.
Role in this project:Mobile Developer (Android)
Mobile Developer (Android)Contributions:94 commits, 84 PRs, 158 pushes in 2 years 1 month
Contributions summary:Vasil primarily focused on Android-specific code within the NativeScript framework. Their commits addressed bug fixes related to Android UI components, such as bottom navigation and tabs, as well as improvements to styling and color handling. They also contributed to the Android platform's typings, adding support for API levels and refactoring interface naming conventions. Additionally, the user addressed potential performance issues by modifying code related to early garbage collection and ensured native methods with `@CallSuper` called `superFunc`.
ionic-reactsolidjsbest-ofvueios
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