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MiaJLee/README.md

Hi there, This is Jihyung ๐Ÿ‘‹

About Me

Hi, my name is Mia, Jihyung Lee.

I am a frontend developer with 6 years of experience specializing in Angular and TypeScript, with a strong track record of building and improving large-scale commerce platform admin tools and B2B seller centers.

With a background in Graphic Design, I approach problems from a UX perspective โ€” defining requirements in collaboration with planners, designers, and backend engineers, and translating them into implementable structures.

I have led initiatives in monorepo migration, CI/CD optimization, and test automation to enhance team productivity and system reliability. I believe in simplifying complex domains into maintainable architectures that empower teams to ship with confidence.

Projects

Professional Projects

  • Kakao Commerce Admin & Seller Center โ€” Built and maintained internal admin and B2B seller center for Kakao Gift, TokDeal, and other B2C services, covering 10+ domains including orders, claims, messaging, ads, and CS platforms.
  • Nx Monorepo Migration โ€” Led the consolidation of 12 multi-repositories into a unified Nx-based monorepo, reducing context-switching costs and improving team collaboration. Optimized CDN usage from 4.5TB โ†’ 300GB.
  • CI/CD & Test Automation โ€” Managed 31 apps via Jenkins multi-branch pipelines; introduced Nx affected-based parallel builds, cutting build time from ~30 min โ†’ ~3 min. Set up E2E testing with GitHub Actions + Playwright.
  • Legacy Platform Migration โ€” Led the long-term migration of order/claim legacy platforms to a new architecture with a gradual transition strategy.
  • Kakao Friends Shop โ€” Developed client and admin FE for Kakao IP product e-commerce. Migrated React app to Angular, handled markup to i18n without a dedicated publisher.

Side Projects

  • DJBB (DJ Black Bunny) โ€” A service to send letters with music to ring in the New Year. Handled planning, product design, and full-stack development (FE/BE). Over 1,900 cards were created after launch.

Work Experience

  • Kakao โ€” Frontend Engineer, Commerce Platform FE Team. (Oct 2020 ~ Present)
  • HAII โ€” Product Designer Intern, AI-based cognitive enhancement chatbot startup. (Sep 2019 ~ Dec 2019)

Education

  • Bachelor's Degree โ€” Computer Science | Korea National Open University (2021 ~ 2024)
  • Bachelor's Degree โ€” Visual Communication Design | Hongik University (2014 ~ 2020)

Technical Skills

Category Skills
Frontend Angular, React, TypeScript
Architecture / DX Nx Monorepo, Jenkins CI/CD, GitHub Actions
Testing Playwright
Design & Communication Figma, Design Research
Others Node.js, MongoDB, MobX, styled-components, i18n

Language

  • English โ€” OPIc AL (2020), TOEFL iBT 107 (2019)
  • Spanish - Duolingo Score 58

์†Œ๊ฐœ

์•ˆ๋…•ํ•˜์„ธ์š”, ์ด์ง€ํ˜•์ž…๋‹ˆ๋‹ค.

Angular, TypeScript ๊ธฐ๋ฐ˜์˜ 6๋…„์ฐจ ํ”„๋ก ํŠธ์—”๋“œ ๊ฐœ๋ฐœ์ž๋กœ, ๋Œ€๊ทœ๋ชจ ์ปค๋จธ์Šค ํ”Œ๋žซํผ์˜ ์–ด๋“œ๋ฏผยทํŒ๋งค์ž์„ผํ„ฐ ๊ฐœ๋ฐœ๊ณผ DX ๊ฐœ์„ ์„ ์ฃผ๋„ํ•ด์™”์Šต๋‹ˆ๋‹ค.

๋””์ž์ธ ์ „๊ณต์„ ๋ฐ”ํƒ•์œผ๋กœ UX ๊ด€์ ์—์„œ ๋ฌธ์ œ๋ฅผ ์ •์˜ํ•˜๊ณ , ๊ธฐํš์žยท๋””์ž์ด๋„ˆยท์„œ๋ฒ„ ๊ฐœ๋ฐœ์ž์™€ ๊ฐ์ž์˜ ์–ธ์–ด๋กœ ์†Œํ†ตํ•˜๋ฉฐ ์š”๊ตฌ์‚ฌํ•ญ์„ ๊ตฌํ˜„ ๊ฐ€๋Šฅํ•œ ๊ตฌ์กฐ๋กœ ์ •๋ฆฌํ•˜๋Š” ๋ฐ ๊ฐ•์ ์ด ์žˆ์Šต๋‹ˆ๋‹ค.

๋ชจ๋…ธ๋ ˆํฌ ์ „ํ™˜ยทCI/CDยทํ…Œ์ŠคํŠธ ์ž๋™ํ™”๋ฅผ ํ†ตํ•ด ํŒ€์˜ ๊ฐœ๋ฐœ ํšจ์œจ๊ณผ ์•ˆ์ •์„ฑ์„ ๊ฐœ์„ ํ–ˆ์œผ๋ฉฐ, ๋ณต์žกํ•œ ๋„๋ฉ”์ธ์„ ๋‹จ์ˆœํ•œ ๊ตฌ์กฐ๋กœ ํ’€์–ด๋‚ด์–ด ํŒ€์ด ์œ ์ง€๋ณด์ˆ˜ํ•˜๊ธฐ ์‰ฌ์šด ์•„ํ‚คํ…์ฒ˜๋ฅผ ๋งŒ๋“œ๋Š” ๊ฒƒ์„ ์ค‘์š”ํ•˜๊ฒŒ ์ƒ๊ฐํ•ฉ๋‹ˆ๋‹ค.

ํ”„๋กœ์ ํŠธ

์ฃผ์š” ํ”„๋กœ์ ํŠธ

  • ์นด์นด์˜ค ์ปค๋จธ์Šค ์–ด๋“œ๋ฏผ & ํŒ๋งค์ž์„ผํ„ฐ โ€” ์„ ๋ฌผํ•˜๊ธฐ, ํ†ก๋”œ ๋“ฑ B2C ์„œ๋น„์Šค ์šด์˜์„ ์œ„ํ•œ ๊ด€๋ฆฌ์ž ์–ด๋“œ๋ฏผ ๋ฐ ํŒ๋งค์ž์„ผํ„ฐ FE ๊ฐœ๋ฐœ. ์ฃผ๋ฌธ, ํด๋ ˆ์ž„, ๋ฉ”์‹œ์ง€, ๊ด‘๊ณ , ์ƒํ’ˆ/ํšŒ์›/CS ํ”Œ๋žซํผ ๋“ฑ 10๊ฐœ ์ด์ƒ ๋„๋ฉ”์ธ ๊ฐœ๋ฐœยท์šด์˜.
  • Nx ๊ธฐ๋ฐ˜ ๋ชจ๋…ธ๋ ˆํฌ ์ „ํ™˜ โ€” 12๊ฐœ์˜ ๋ฉ€ํ‹ฐ ๋ ˆํฌ์ง€ํ† ๋ฆฌ๋ฅผ Nx ๊ธฐ๋ฐ˜ ๋ชจ๋…ธ๋ ˆํฌ๋กœ ํ†ตํ•ฉ ๋ฆฌ๋“œ. CDN ์‚ฌ์šฉ๋Ÿ‰ 4.5TB โ†’ 300GB๋กœ ์ถ•์†Œํ•˜๋ฉฐ ์ธํ”„๋ผ ๋น„์šฉ ์ ˆ๊ฐ์— ๊ธฐ์—ฌ.
  • CI/CD ๋ฐ ํ…Œ์ŠคํŠธ ์ž๋™ํ™” โ€” Jenkins ๋ฉ€ํ‹ฐ๋ธŒ๋žœ์น˜ ํŒŒ์ดํ”„๋ผ์ธ์œผ๋กœ 31๊ฐœ ์•ฑ ๊ด€๋ฆฌ. nx affected ๊ธฐ๋ฐ˜ ๋ณ‘๋ ฌ ๋นŒ๋“œ ๋„์ž…์œผ๋กœ ๋นŒ๋“œ ์‹œ๊ฐ„ ์•ฝ 30๋ถ„ โ†’ 3๋ถ„์œผ๋กœ ๋‹จ์ถ•. GitHub Actions + Playwright E2E ํ…Œ์ŠคํŠธ ํ™˜๊ฒฝ ๊ตฌ์ถ•.
  • ๋ ˆ๊ฑฐ์‹œ ํ”Œ๋žซํผ ์ด๊ด€ โ€” ์ฃผ๋ฌธ/ํด๋ ˆ์ž„ ๋ ˆ๊ฑฐ์‹œ ํ”Œ๋žซํผ์„ ์‹ ๊ทœ ๊ตฌ์กฐ๋กœ ์ด๊ด€ํ•˜๋Š” ํ”„๋กœ์ ํŠธ๋ฅผ ์žฅ๊ธฐ์ ์œผ๋กœ ์ˆ˜ํ–‰.
  • ์นด์นด์˜คํ”„๋ Œ์ฆˆ์ƒต โ€” ์นด์นด์˜ค IP ์ƒํ’ˆ ์ปค๋จธ์Šค ํด๋ผ์ด์–ธํŠธ ๋ฐ ์–ด๋“œ๋ฏผ FE ๊ฐœ๋ฐœ. React โ†’ Angular ์ „ํ™˜, ๋งˆํฌ์—…๋ถ€ํ„ฐ ๋‹ค๊ตญ์–ด(i18n) ๋Œ€์‘๊นŒ์ง€ ๋‹ด๋‹น.

์‚ฌ์ด๋“œ ํ”„๋กœ์ ํŠธ

  • DJBB (DJ Black Bunny) โ€” ์ƒˆํ•ด๋ฅผ ์‹œ์ž‘ํ•˜๋Š” ์Œ์•…๊ณผ ํ•จ๊ป˜ ํŽธ์ง€๋ฅผ ์ „๋‹ฌํ•˜๋Š” ์„œ๋น„์Šค. ๊ธฐํšยทํ”„๋กœ๋•ํŠธ ๋””์ž์ธยท๊ฐœ๋ฐœ(FE/BE) ์ „ ๊ณผ์ • ์ˆ˜ํ–‰. ์„œ๋น„์Šค ๋ฐฐํฌ ํ›„ ์•ฝ 1,900๊ฐœ ์ด์ƒ์˜ ์นด๋“œ ์ƒ์„ฑ.

๊ฒฝ๋ ฅ

  • ์นด์นด์˜ค โ€” ํ”„๋ก ํŠธ์—”๋“œ ์—”์ง€๋‹ˆ์–ด, ์ปค๋จธ์Šค๊ธฐ๋ฐ˜ํ”Œ๋žซํผFEํŒ€ (2020.10 ~ ํ˜„์žฌ)
  • HAII โ€” ํ”„๋กœ๋•ํŠธ ๋””์ž์ด๋„ˆ ์ธํ„ด, AI ๊ธฐ๋ฐ˜ ์ธ์ง€๊ธฐ๋Šฅ ํ–ฅ์ƒ ์ฑ—๋ด‡ ์Šคํƒ€ํŠธ์—… (2019.09 ~ 2019.12)

ํ•™๋ ฅ

  • ํ•œ๊ตญ๋ฐฉ์†กํ†ต์‹ ๋Œ€ํ•™๊ต โ€” ์ปดํ“จํ„ฐ๊ณผํ•™๊ณผ (2021 ~ 2024)
  • ํ™์ต๋Œ€ํ•™๊ต โ€” ์‹œ๊ฐ๋””์ž์ธํ•™๊ณผ (2014 ~ 2019)

๊ธฐ์ˆ  ์Šคํƒ

๋ถ„๋ฅ˜ ๊ธฐ์ˆ 
ํ”„๋ก ํŠธ์—”๋“œ Angular, React, TypeScript
์•„ํ‚คํ…์ฒ˜ / DX Nx Monorepo, Jenkins CI/CD, GitHub Actions
ํ…Œ์ŠคํŒ… Playwright
๋””์ž์ธ & ์ปค๋ฎค๋‹ˆ์ผ€์ด์…˜ Figma, Design Research
๊ธฐํƒ€ Node.js, MongoDB, MobX, styled-components, i18n

์–ดํ•™

  • ์˜์–ด โ€” OPIc AL (2020), TOEFL iBT 107 (2019)
  • ์ŠคํŽ˜์ธ์–ด - Duolingo Score 58

Connect with Me

Linkedin

GitHub Blog Email

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    ๐ŸŒž Morning    21 commits  โ–ˆโ–โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   5.7%
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    ๐ŸŒ† Daytime   117 commits  โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–‹โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘  31.6%
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    ๐ŸŒƒ Evening   176 commits  โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–‰โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘  47.6%
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    ๐ŸŒ™ Night      56 commits  โ–ˆโ–ˆโ–ˆโ–โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘  15.1%
  2. Lubycon/divid-front Lubycon/divid-front Public

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  3. new-year-card new-year-card Public

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