Tengfei Yin

Software Development Engineer Ii @Amazon

London, GB

Lead Dev Engineer (2 devs):(Frontend & Backend) Leverage on Red Teaming to ensure safety of LLMs.[Impact]: Enabled Red Teaming Run launch 10x faster, increased customer base by 3x+ Lead Dev Engineer (5 devs):(Backend, BE) CAKE: Captivating visuAls for Key percEptions, a business intelligence platform.[Impact]: Accountable from ideation to realisation, won 40 customers across 10 countries+ Lead Dev Engineer:(FE) Delivered Performance Enhancement Initiative of Optimus (UI of an automation framework run 3.8m tests/year), new method is 50 times faster.[Impact]: 1) Made UI 19% more responsive; 2) Reduced compilation time by 20%, streamlined dev process of 20 engineers+ Lead Dev Engineer:(FE) Added ADB Shell Command interface on ATO (Alexa Test Orchestrator) allowing interaction with devices in real-time.[Impact]: Enabled 10% of test automation for customers with 4.3K tests+ Lead Dev Engineer,(BE) implemented Appium functionality using Device Hardware Abstraction Language.[Impact]: Enabled GUI testing for 100+ types of multimodal Echo devices, increased customer base by 2x+ Lead Dev Engineer:(BE) I18N capability enhancement for Alexa on Amazon App E2E test automation framework.[Impact]: Reduced testing effort for launching new I18N locale, speeding up 24x+ SW Dev Engineer:(BE) Device Configuration Service, a native AWS service that provisions both physical & non-physical Alexa devices.[Impact]: Saved 2 lab managers, 10x faster device configuration+ SW Dev Engineer:(BE) Implemented a multi-tenancy test accounts management service, enabling account ordering, allow-listing & destruction.[Impact]:+30% faster test env setupℎ:+ Team Lead (10 devs).[Impact]: Increased delivery speed by %+ Team OE Lead+ Mentor junior SDEs and SDE interns