Aleksi Grön is a versatile software engineer with 11 years of experience, currently a Software Development Engineer II at Mapbox in Helsinki, specializing in maintainable backend systems and real-time 3D graphics. He has built serverless, cloud-native backends (notably C#/.NET on Azure Functions) and contributed deep graphics expertise to both game studios and mapping platforms. At Mapbox he helped advance the real-time 3D map renderer and made notable open-source contributions to mapbox-gl-js, improving shadow rendering and performance in a widely used WebGL mapping library. Comfortable navigating large codebases, Aleksi blends systems design with hands-on shader and engine work—a combination shaped by roles from online/game programming to lead backend architect. Colleagues rely on him for pragmatic, well-structured solutions that scale across devices and environments.
11 years of coding experience
11 years of employment as a software developer
Bachelor of Engineering - BE, Information Technology, Bachelor of Engineering - BE, Information Technology at Xamk - South-Eastern Finland University of Applied Sciences
Degree program for information technology services and marketing, Degree program for information technology services and marketing at Etelä-Kymenlaakso Vocational College
Interactive, thoroughly customizable maps in the browser, powered by vector tiles and WebGL
Role in this project:
Back-end Developer
Contributions:23 reviews, 33 commits, 17 PRs in 1 year
Contributions summary:Aleksi significantly contributed to adding and refining shadow rendering capabilities within the mapbox-gl-js library. Their work involved implementing shader changes, including shadow rendering on fill extrusions and terrain, fixing various issues within shadow shaders, and addressing review comments. The user's contributions included optimizing the performance and visual fidelity of shadows, such as fading between shadow cascades and adjusting shadow strength based on fog opacity, and incorporating specific shadow rendering parameters.
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Aleksi Grön - Software Development Engineer II at Mapbox