Ching-Sheng Chang

Experience

• 

  National Tsing Hua University

  Sept 2010 - Jan 2011

  Teaching Assistant

  Department of Computer ScienceCourse: Introduction to Computer Networks

• 

  Republic of China Air Force

  Oct 2012 - Sept 2013

  Reserve officer - Political Warfare

  Good memories in TTC & OT&E

• 

  Sunplus

  Nov 2013 - Nov 2015

  Software Firmware Engineer

  Biomedical Electronics departmentLed and designed ECG patch firmware & architecture (2013-2015)- Application for analog front-end chip - Developed by C language with ARM cortex M0 processor- Modified Heartbeat detection algorithm to reduce memory and computing time- Improved performance for power saving (Active state consuming most 2mA)- Designed compression algorithm to reduce network loading affects system performanceLed and designed whole android app for showing ECG signal from patch (2015)- Developed by Java, Bluetooth low energy protocol & ECG signal real-time drawing Show less

• 

  Sixnology Inc.

  Nov 2015 - Aug 2020

  Software Engineer

  Built Sixnology brand product “Uyas”, started from zero (2016-2020) - Android based smart speaker and android mobile app - Developed by Java with MVP architecture, including unit/instrumentation tests - Designed music player core to integrate YouTube, Spotify and KKBOX playbacks - Integrated MQTT service to synchronize both speaker and mobile app player status - Developed smart speaker/app features, including UI, player, network API, etc. - Improved speaker UI Rendering (Introduced ConstraintLayout, Optimized Glide & view)Developed MyDLinkHome app features (2015-2016, Outsourcing project) - https://play.google.com/store/apps/details?id=com.dlink.mydlinkmyhome, - Remote controlled wifi-cameras by using Restful API, fix app & UI issues Show less

• 

  Green Citizens' Action Alliance (綠色公民行動聯盟)

  Mar 2020 - Sept 2020

  Android developer (Case job)

  Google Play Taiwan Best Hidden Gem 2020Developed by Kotlin with MVVM architecture, using Dagger2 and Coroutine to reduce system complexity.

• 

  XRSPACE

  Aug 2020 - Jul 2021

  Senior Software Engineer

  Support VR Agent system integration with NLP / Unity engineer.Integrate STT / TTS services into VR Agent.Refactor chatbot system for AI SDK.

• 

  Synology

  Aug 2021 - now

  Product developer