Mark De Wever is a Senior C++ developer with over 30 years in software engineering and 26 years of focused professional experience, currently based in Amsterdam. He has spent the last 15 years intensively using all versions of C++, participates in WG21 (the ISO C++ Committee), and actively contributes to libc++ within the widely used LLVM project—notably improving chrono, time zone handling, and leap second behavior. Mark has led migrations to modern C++ (C++17), taught colleagues modern tooling, and shipped robust backend systems across domains from oceanographic buoys to sports timing and medical workflows. His work blends deep standards-level expertise with pragmatic maintenance and feature development, and he often surfaces subtle correctness improvements that prevent runtime failures in long-lived systems.
26 years of coding experience
2 years of employment as a software developer
Ingenieur (Ing.), Mechanical engineering, energy technology, Ingenieur (Ing.), Mechanical engineering, energy technology at Hogeschool Alkmaar
An open source, turn-based strategy game with a high fantasy theme.
Role in this project:
Back-end Developer
Contributions:5989 commits, 1 push in 8 years 7 months
Contributions summary:Mark's commits focus on adding and modifying server-side functionalities. The contributions involve implementing a new "give_control" command and modifying GUI elements, specifically within the context of multiplayer game dynamics. The user demonstrates proficiency in C++ by working on source files related to game logic, specifically involving GUI design in the context of the game.
The LLVM Project is a collection of modular and reusable compiler and toolchain technologies.
Role in this project:
Back-end Developer
Contributions:989 reviews, 15 commits, 468 PRs in 8 months
Contributions summary:Mark primarily contributed to the libc++ project, focusing on the implementation of the C++ standard library, specifically the chrono library. Their work involved adding the sys_info and local_info formatters, implementing the to_sys function and adding unit tests for these new features, along with improvements to existing components like the time zone format specifiers. The user also made improvements to the existing code by refining the leap second functionality.
compilerstechnologiesclangsubmittoolchain
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Mark De Wever - Senior C Developer at Science [&] Technology AS