From 7dccf6e8684f767b6e377d627b36ccf493947f1e Mon Sep 17 00:00:00 2001 From: "Alex Xu (Hello71)" Date: Sun, 3 Oct 2021 15:03:42 -0400 Subject: Initial commit --- resume/resume.html | 230 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 230 insertions(+) create mode 100644 resume/resume.html (limited to 'resume/resume.html') diff --git a/resume/resume.html b/resume/resume.html new file mode 100644 index 0000000..982ded8 --- /dev/null +++ b/resume/resume.html @@ -0,0 +1,230 @@ + + + + + Alex Xu's Resume + + + + + + + + + +
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Alex Xu

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Generalist software developer

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Education

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Lassonde School of Engineering, B.Sc., Hons. Computer Science, York University, GPA: 7.7/9.0 (A).

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Sept. 2016–May 2020:
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  • Advanced Object Oriented Programming (A+)
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  • Design and Analysis of Algorithms (A+)
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  • Fundamentals of Data Structures (A+)
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  • Computer Architecture (A)
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  • Database Management Systems (A+)
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  • Applied Cryptography (A+)
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  • Mathematics of Cryptography (A)
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  • Network Security (A+)
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  • Advanced Object Oriented Programming (A+)
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  • Design and Analysis of Algorithms (A+)
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  • Fundamentals of Data Structures (A+)
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  • Computer Architecture (A)
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  • Database Management Systems (A+)
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  • Applied Cryptography (A+)
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  • Mathematics of Cryptography (A)
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  • Network Security (A+)
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Work

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Ethica Channel Enablement Inc, Network Engineer.

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Dec. 2018–Oct. 2019:
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Developed several core projects and provided extensive consulting on C, Linux, git, and networking.

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  • built a Buildroot-based minimal Linux infrastructure for the launch of a multi-link VPN product
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  • created a fully automated high-speed operating system installer for x86 systems using BusyBox sh
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  • created a tool for remote Linux in-place replacement using POSIX sh and BusyBox
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  • developed a GitLab CI process for generating the deployable image
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York University, Undergraduate Student Research Award researcher.

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May–Aug. 2018:
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Co-developed a Django web platform for worldwide crowdsourced hydrographic data collaboration.

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York University, Teaching assistant.

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June–July 2017:
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Taught lab sessions for 48-student Android/web development course.

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Community

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Alpine Linux

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March 2020–present:
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Reported, documented, and contributed fixes for issues including Operation not permitted in Docker, sh: write error: Invalid argument, and Raspberry Pi doesn't boot, 7 blinks. Proposed changes including -fno-plt for x86 and x86_64, compressing debuginfo, and reconsidering -Os.

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libglvnd

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September 2021:
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Implemented correct global-dynamic TLS support, fixing musl compatibility.

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Wine

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July 2021:
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Implemented copy_file_range support, shrinking Wine prefixes from 200 MB to less than 1 MB.

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Linux kernel

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2012–present:
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Reported issues and submitted fixes: lkml, linuxlists. Diagnosed Cargo issue 9739 to a long-standing kernel bug, and fixed the underlying issue, resolving a deadlock in GNU Make and similar jobservers.

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QEMU

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December 2020:
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Discovered and reported an issue allowing full host device access from guests with virtiofsd enabled.

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wfs

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June 2020:
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Built a concurrent Python web font subsetter with automatic pixel-perfect verification.

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cgit-syntax-highlighting

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March 2020:
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Built a concurrent Python pygments microservice, reducing TTFB from 1.1s to 0.15s on cgit.alxu.ca. Improved portability and security and reduced LOC by 66% by switching from http.server to aiohttp.

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udpastcp

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July 2016:
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Built a C tunnel to simulate datagrams using TCP packets, fixing TCP-over-TCP overhead.

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Dwarf Therapist

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Aug. 2014–Sept. 2017:
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Implemented cross-bit ptrace, migrated from qmake to CMake, and refactored code.

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Simple Registry Editor

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Sept. 2008:
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Built a minimal .NET registry editor.

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Personal

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Resume

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June 2020:
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Rewrote my resume from LaTeX to modern web standards:

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  • significantly improved mobile-friendliness and blind accessibility using standard HTML and CSS
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  • reduced transfer size from 390 kB to 30 kB using aggressive inlining and font subsetting
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  • optimized loading time by minimizing size and reducing round trips using HTTP/2 server push
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Skills

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Alpine, Debian Linux; FreeBSD; Docker; Git; NGINX; WireGuard; TCP/IP; HTTP(S); DNS; SSH

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Programming

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C; C++; Go; Python; bash, POSIX sh; GNU make; HTML; CSS; JavaScript; SQL

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