Ray Xu

Sydney, New South Wales, Australia

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Summary

🤩

Rockstar

🎓

Top School

Ray Xu is a seasoned software engineer with over a decade of experience building high-throughput, machine learning–driven systems for fraud detection, personalized recommendations, and IoT monitoring. He has shipped production services at scale—designing event-driven microservices, data pipelines, and ML inference layers in Go, Python, and TypeScript for millions of users across fintech, media, and industrial applications. Ray pairs low-level systems expertise (C++/FPGA work on video and imaging early in his career) with modern cloud-native patterns and real-time streaming architectures using Kafka, Redis, and serverless components. An active open-source maintainer under @ray-x, he’s created developer-facing tools (one repo focused on smooth LSP signature UI) that have earned thousands of stars and practical adoption. Colleagues rely on him to translate ambiguous product needs into reliable, performant systems and to bridge front-end UX polish with backend performance tuning. Based in Sydney and trained at Zhejiang University, he brings a pragmatic focus on developer productivity and production robustness.

11 years of coding experience

11 years of employment as a software developer

Bachelor's degree, Computer Science, Bachelor's degree, Computer Science at Zhejiang University

Github Skills (13)

golang10

neovim10

lua10

language-server10

user-interface10

go10

ui-design10

graphical-user-interface10

yaml9

plugin-development9

configuration-management9

json9

autocomplete9

Programming languages (19)

C++RustSchemeCObjective-C++PLpgSQLGoTree-sitter Query

Github contributions (5)

ray-x/lsp_signature.nvim

Feb 2021 - Jan 2023

LSP signature hint as you type

Role in this project:

Front-end Developer

Contributions:4 releases, 72 reviews, 321 commits in 1 year 11 months

Contributions summary:Ray primarily contributed to the user interface elements of the `lsp_signature.nvim` plugin, specifically focusing on the display of code signatures. The commits show modifications to the virtual text display, adjustments to the positioning of floating windows, and overall improvements to the user experience by preventing overlaps. The user also addressed compatibility issues with other completion plugins.

signaturelspneovimas-you-typeautocomplete

mattn/efm-langserver

Jun 2021 - Jul 2021

General purpose Language Server

Role in this project:

Back-end Developer

Contributions:1 review, 8 commits, 4 PRs in 26 days

Contributions summary:Ray contributed to the configuration and functionality of a language server. The commits focused on adding features like lint severity settings and format debounce, enhancing the server's capabilities. They also refactored code, moving the severity update logic for improved performance. The changes involved modifications to configuration files and core handler logic within the language server's codebase.

golangcoc-nvimpurposelangserverlanguage-server

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