Xer R
Software Engineer at Macro
Petrolia, Ontario, Canada
Summary
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RockstarXer R is a software engineer with nine years of hands-on experience building backend systems, currently working at Macro and based in Petrolia, Ontario. He is an active open-source contributor in the Minecraft server ecosystem, having improved performance, stability, and protocol compatibility on prominent projects like PaperMC's Waterfall and Velocity. His contributions span DoS mitigations, protocol version handling, resource pack APIs, and optimized UUID conversions—demonstrating a focus on security, backward/forward compatibility, and operational flexibility. Originally an IT student from Germany, he brings an international perspective and a practical, systems-oriented mindset to production-grade server software. Colleagues would describe him as a tech enthusiast who prefers solving real-world reliability and performance problems over theoretical exercises.
9 years of coding experience
Github Skills (18)
minecraft10
git10
github10
api-design10
git-repository10
proxy10
proxy-server10
networking10
java10
javas10
velocity10
bungeecord10
security9
performance-optimization9
communication-protocol9
Programming languages (10)
Github contributions (5)
PaperMC/Waterfall
Jan 2021 - Nov 2021
BungeeCord fork that aims to improve performance and stability.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:12 reviews, 8 commits, 20 PRs in 9 months
Contributions summary:Xer primarily contributed to the BungeeCord fork, Waterfall, focusing on core backend improvements and stability. Their work involved updating the upstream BungeeCord codebase, incorporating additional DoS mitigations to enhance login security, and enabling support for the 1.17 Minecraft protocol. Furthermore, they optimized UUID conversions and implemented configurable plugin messaging limits, showing a focus on performance and flexibility for server administrators.
minecraftbungeecordbukkitperformancespigot
PaperMC/Velocity
Jan 2021 - Jul 2022
The modern, next-generation Minecraft server proxy.
Role in this project:Back-end Developer
Back-end DeveloperContributions:18 reviews, 45 commits, 22 PRs in 1 year 6 months
Contributions summary:Xer primarily contributed to the Velocity proxy's core functionality, focusing on protocol version handling and resource pack management. Their work included modifying the `ProtocolVersion.java` file to reflect changes related to Minecraft snapshots, ensuring compatibility with new game versions. They also implemented and improved the resource pack API, making it more robust and flexible. These changes indicate a focus on maintaining the proxy's ability to support evolving Minecraft versions.
next-generationminecraftminecraft-forgeproxy-serverproxy
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