Jianlin Xu
R&D Director at Powerinfo
Haidian District, Beijing, China
Summary
🤩
Rockstar🎓
Top SchoolJianlin Xu is an R&D Director and former Android lead with 12 years of experience building client SDKs and mobile products, currently leading the client SDK team at Powerinfo in Beijing. A Tsinghua computer science graduate and Udacity deep learning alum, he combines strong Android engineering—evidenced by open-source projects like BigImageViewer and RxAndroidAudio—with systems work such as contributions to MEGA's Java bindings and the OkBuck build plugin. He focuses on RTC and real-time client problems but routinely applies critical thinking, test-driven practices, and pragmatic architecture across the stack. Jianlin values efficient, reliable product delivery through collaboration and continuous learning, and maintains a technical blog and active GitHub where "never stop" reflects his hands-on, improvement-driven approach.
12 years of coding experience
3 years of employment as a software developer
Deep Learning Nanodegree Foundation, Computer Science, Deep Learning Nanodegree Foundation, Computer Science at UdacityBachelor’s Degree, Computer Science, 92.1/100, Bachelor’s Degree, Computer Science, 92.1/100 at Tsinghua University
English, Chinese
Stackoverflow
1,009reputation
222kreached
19answers
10questions
Github Skills (37)
dagger10
buck10
injection10
inject10
rxjavafx10
plugin-development10
image-loading10
ui-design10
java10
fresco10
android-library10
javas10
uid10
sdk10
front-end-development10
Programming languages (25)
Github contributions (5)
Piasy/RxAndroidAudio
Feb 2016 - May 2021
Maybe the most robust Android Audio encapsulation library, with partial Rx support.
Role in this project:
Mobile Developer (Android)
Mobile Developer (Android)Contributions:47 commits, 15 PRs, 56 pushes in 5 years 3 months
Contributions summary:Jianlin primarily contributed to the `rxandroidaudio` repository, an Android audio encapsulation library with Rx support. Their work focused on enhancing the example application by incorporating features such as recording and playing audio, handling permissions, and integrating amplitude level visualization. The user also added stream audio recorder and player functionalities, along with non-reactive APIs for existing components, which indicates a focus on improving the library's capabilities and usability. Furthermore, they addressed bug fixes and code style issues.
android-audio
Piasy/BigImageViewer
Nov 2016 - Dec 2022
Big image viewer supporting pan and zoom, with very little memory usage and full featured image loading choices. Powered by Subsampling Scale Image View, Fresco, Glide, and Picasso. Even with gif and webp support! 🍻
Role in this project:Mobile Developer (Android)
Mobile Developer (Android)Contributions:103 commits, 37 PRs, 110 pushes in 6 years 2 months
Contributions summary:Jianlin primarily contributed to the development of the `BigImageViewer` Android library, focusing on integrating and improving image loading and display functionalities. Their work involved the use of Fresco and Glide for image loading, as well as the integration of SubsamplingScaleImageView for pan and zoom capabilities. The commits demonstrate feature additions, performance optimizations, and bug fixes related to the user interface, image saving, and the display of various image types (including animated GIFs and WebP).
image-loadingimage-viewersubsamplingwebp
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