UIT Survey 2022 LINE Corp. December 2022

34% 15% 20% 14% 7% 1% 1% 2% 0% 7% LINE Work Experience )PXmany years IBWFZPVXPSLFEGPS-*/& 0-1 years 2 3 4 5 6 7 8 9 10+

11% 29% 24% 17% 19% Job Changes )PXNBOZDPNQBOJFTIBWFZPVXPSLFEBUCFGPSF-*/& 0 4+ 1 2 3

Language 8IBUMBOHVBHF T EPZPVVTFJOZPVSKPC ೔ຊޠ English

67% 12% 20% Project Management 8IBUQSPKFDUNBOBHFNFOUNFUIPEPMPHZEPZPVQSJNBSJMZVTFJOZPVSUFBN Agile Waterfall Other

67% 27% 3 2 Remote Work )PXNBOZUJNFTEPZPVXPSLSFNPUFMZJOBOBWFSBHFXFFL Never 2~3 days 3~4 days Always

40% 10% 8% 4% 3% 2% 2% 1% 1% 1% 1% 1% 1% 26% Country 8IBUJTZPVSDPVOUSZPGPSJHJO Japan Taiwan Korea Vietnam China France Germany Mexico USA Norway Hong Kong Poland Australia Prefer not to answer

Front-End Knowledge )PXEPZPVSBUFZPVSPXOLOPXMFEHFPGCSS+4BOEJUTBTTPDJBUFEUPPMTBOENFUIPEPMPHJFT 15% 30% 41% 12% 2 22% 46% 20% 4 8% +4 $44 Expert Advanced Intermediate Novice Beginner

2 4 21% 18% 24% 15% 31% 28% 35% 56% 45% 36% 33% 37% 13% 38% 29% 18% 10% 7% #PPUTUSBQ 5BJMXJOE$44 LPSPNP -%4( "TUSP UI Frameworks Please indicate your experience with the following UI frameworks. Never heard of Used a little Heard of / read about Feel comfortable using *Made by LINE * * *

CSS Methodologies and Tools Which of these CSS methodologies or tools do you use in your project(s) at LINE? 50% 37% 33% 23% 7% 6% 2% Autoprefixer Stylelint None BEM Modernizr OOCSS Other

2 4 4 9% 7% 27% 19% 34% 41% 10% 15% 33% 33% 28% 57% 58% 58% 37% 25% 33% 33% 36% 28% 11% 18% 6% 19% 63% 49% 31% 23% 37% 5% 6% 2 3 React Vue.js (v2) Vue.js (v3) Nuxt Next.js Preact Svelte SolidJS Lit Knowledge of JS Libraries & Frameworks Please indicate your experience with the following JavaScript libraries/frameworks. Never heard of Used a little Heard of / read about Feel comfortable using

Frequently Used JS Libraries & Frameworks Which library/framework do you use for your project(s) at LINE? 65% 56% 50% 36% 28% 14% 5% React Vue.js (v2) Vue.js (v3) Next.js Nuxt Lit None

2 11% 23% 20% 24% 4 29% 33% 49% 46% 30% 35% 30% 24% 23% 63% 24% 14% 7% 7% Webpack Vite Rollup Parcel esbuild JS Module Bundlers Please indicate your experience with the following module bundlers. Never heard of Used a little Heard of / read about Feel comfortable using

Frequently Used Languages Which language do you use for your project(s) at LINE? 70% 50% 52% TypeScript JavaScript Both * Using both TypeScript and JavaScript in a single project

7% 12% 11% 17% 22% 41% 8% 46% 46% 36% 50% 37% 28% 24% 30% 35% 20% 15% 56% 18% 14% 12% 8% 7% Jest Cypress Mocha Puppeteer Jasmine Playwright Knowledge of JS Testing Tools Please indicate your experience of tools for testing. Never heard of Used a little Heard of / read about Feel comfortable using

Knowledge of Accessibility Have you read any of the following documents related to accessibility? 69% 40% 27% 18% LINE Accessibility Guidelines WAI-ARIA WCAG None