Simo Kinnunen
Principal Software Engineer at Checkly
Greater Tokyo Area Japan
Summary
🤩
RockstarSimo Kinnunen is a Principal Software Engineer in the Greater Tokyo Area with 17 years of experience building backend and mobile systems for device and cloud tooling. He is a specialist in low-level Android engineering — notable contributions to openstf projects like minicap, minitouch and STF demonstrate deep experience with SurfaceComposerClient, multitouch drivers and JPEG-optimized capture pipelines. At HeadSpin and now Checkly he has driven engineering at scale, improving logging, device orchestration and resilient backend services. A former VP of Engineering and CTO, he blends hands-on C/Android development with leadership, and his dry "Retired from Open Source" Github note reflects a pragmatic, results-focused approach to collaboration.
17 years of coding experience
16 years of employment as a software developer
English, Finnish, Japanese, Swedish, German
Stackoverflow
5,697reputation
544kreached
7answers
1question
android
top-5%
adb
top-5%
json
top-1%
jq
top-5%
shell
top-5%
android-ndk
top-5%
Github Skills (36)
json10
javascript10
c-language10
node-js10
mobile-development10
back-end-development10
mobiledevelopment10
c1110
android-development10
java10
mobile-application10
c1710
javas10
low-level-programming10
javascripts10
Programming languages (15)
Github contributions (5)
openstf/STFService.apk
Feb 2014 - Jul 2018
Monitor and perform various actions on your Android device. Not meant for actual user devices.
Role in this project:
Mobile Developer (Android)
Mobile Developer (Android)Contributions:165 commits, 2 PRs, 16 pushes in 4 years 6 months
Contributions summary:Simo primarily contributed to the Android mobile application by implementing various features. They focused on providing methods for managing the system's rotation settings. The user also added functionality to provide features regarding the volume and added a means to check and change the clipboard.
kotlinmonitorandroid-deviceandroid
openstf/minicap
Nov 2014 - Sep 2019
Stream real-time screen capture data out of Android devices.
Role in this project:Mobile Developer (Android)
Mobile Developer (Android)Contributions:175 commits, 6 PRs, 39 pushes in 4 years 10 months
Contributions summary:Simo contributed to the minicap project by implementing support for a virtual display capture method on Android devices, which involved direct interactions with the SurfaceComposerClient and related display management APIs. Their work focused on modifying the capture pipeline to provide screen captures compatible with various Android SDK versions and handling display size configurations. The user's work also included incorporating JPEG encoding using turbojpeg for image compression.
android-sdkandroid-devicesandroidkotlindata-capture
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