Filip Barl is a Chief Technology Officer and seasoned software engineer with a decade of experience building full-stack web applications and modernizing frontend architectures. Based in Barcelona, he progressed from early-stage hands-on roles—helping Sutori scale to 500k+ users—to engineering positions at Weaveworks and Tomorrow where he delivered UI-driven features for cloud-native monitoring and developer tooling. Filip is an active open-source contributor; his frontend work on popular projects like Electricity Maps and Weaveworks Scope includes React migrations, localization, and novel UI features such as time-travel controls. He combines a rigorous mathematical background (Master’s in Pure Mathematics) with practical product instincts, often bridging complex data visualizations and usability. Known for shipping thoughtful UI improvements and localization fixes, he brings both strategic CTO leadership and continued coding focus to fast-moving teams.
10 years of coding experience
10 years of employment as a software developer
Bachelor's degree Mathematics, Bachelor's degree Mathematics at University of Zagreb / Sveučilište u Zagrebu
Mathematical Sciences, Mathematical Sciences at Jacobs University Bremen
Master's degree Pure Mathematics, Master's degree Pure Mathematics at Jagiellonian University
Monitoring, visualisation & management for Docker & Kubernetes
Role in this project:
Full-stack Developer
Contributions:1 release, 371 commits, 322 PRs in 3 years 4 months
Contributions summary:Filip's commits primarily focused on enhancing the frontend aspects of the application, including numerical sorting of IP addresses in table mode and improving user interface components. Furthermore, the user introduced functionality for time travel by implementing the necessary UI components and underlying API calls. The user also made adjustments to several CSS styles and resolved some minor visual bugs.
The open source repository for Electricity Maps App and data parsers that enables a real-time visualisation of the CO2 emissions of electricity consumption
Role in this project:
Full-stack Developer
Contributions:23 reviews, 67 commits, 131 PRs in 1 year 7 months
Contributions summary:Filip primarily contributed to the frontend development of the Electricity Maps project. Their work included translating the application to Croatian by modifying the locales, integrating the translation status API, and fixing localization issues. The user also migrated multiple components to React, demonstrating a focus on modernizing the project's frontend architecture, including the FAQ, CountryTable, TimeSlider, and Map components.
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Filip Barl - Chief Technology Officer at SankeyArt