Siarhei Fedartsou is a Staff Software Engineer with 12 years of experience specializing in algorithms, data structures, native C++ development and iOS engineering, now shaping backend and mobile systems at Bolt. He has held senior technical roles at Mapbox and other companies, delivering reliability and performance improvements across routing and mapping stacks. An active open-source contributor, Siarhei has improved Organic Maps’ iOS UX, hardened OSRM’s C++ build and CI, and added quality-focused rules to SwiftLint, showing a pattern of fixing tricky UI, tooling and build issues. Comfortable crossing mobile and backend boundaries, he pairs pragmatic engineering with a taste for code quality and tooling, and maintains problem-solving streaks on LeetCode and Kaggle. Based in Lower Silesia, Poland, he brings a blend of production-grade system design and hands-on native code expertise that often surfaces in low-level performance and CI tooling wins.
11 years of coding experience
14 years of employment as a software developer
Bachelor's degree Computer Software Engineering, Bachelor's degree Computer Software Engineering at Belarusian State University of Informatics and Radioelectronics
Contributions:415 reviews, 466 commits, 337 PRs in 5 months
Contributions summary:Siarhei primarily focused on improving code quality and build processes for the OSRM backend project. Their work included configuring and enabling clang-tidy checks, as well as migrating the Windows CI to GitHub Actions for improved build stability. They also made changes related to dependency management, switching from Mason to Conan. These contributions indicate a focus on infrastructure and ensuring code quality within the project.
This is a mirror, please contribute to the main repository: https://git.omaps.dev/organicmaps/organicmaps
Role in this project:
Mobile Developer (iOS)
Contributions:27 reviews, 5 commits, 7 PRs in 12 days
Contributions summary:Siarhei primarily contributed to the iOS portion of the Organic Maps project. Their work involved fixing UI issues in dark mode, specifically related to table header visibility in the settings and routing options. They also addressed multiple clang-tidy warnings, demonstrating code quality improvements, and fixed some performance issues related to move operations.
cyclistsios-androidmobile-appiosmobile
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Siarhei Fedartsou - Staff Software Engineer at Bolt