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C

Staff~Sr. Staff, Machine Learning Engineer (Ads Engineering)

Coupang
๐Ÿ‡ฐ๐Ÿ‡ท South Korea
On-site
Staff / Principal
3 months ago
  • AI
  • Machine Learning
  • LangGraph
  • React.js
  • RLHF
  • CI/CD
  • Claude Code
  • Python
  • Epic
  • System Design
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์ฟ ํŒก์€ ๊ณ ๊ฐ ๊ฐ๋™ ์‹คํ˜„์„ ์œ„ํ•ด ์กด์žฌํ•ฉ๋‹ˆ๋‹ค. ๊ณ ๊ฐ๋“ค์ด "์ฟ ํŒก ์—†์ด ๊ทธ๋™์•ˆ ์–ด๋–ป๊ฒŒ ์‚ด์•˜์„๊นŒ?" ๋ผ๊ณ  ๋งํ•  ๋•Œ, ๋น„๋กœ์†Œ ์šฐ๋ฆฌ์˜ ๋ฏธ์…˜์„ ์‹คํ˜„ํ•˜๊ณ  ์žˆ์Œ์„ ์•Œ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ๊ณ ๊ฐ๋“ค์˜ ์‡ผํ•‘๊ณผ ์‹์‚ฌ, ์ƒํ™œ ์ „๋ฐ˜์„ ํŽธํ•˜๊ฒŒ ๋งŒ๋“ค๊ฒ ๋‹ค๋Š” ์œ ์ผํ•œ ์ง‘๋…์œผ๋กœ ์ฟ ํŒก์€ ์ˆ˜์–ต ๋‹ฌ๋Ÿฌ ๊ทœ๋ชจ์˜ ์ด์ปค๋จธ์Šค ์‚ฐ์—… ์ „๋ฐ˜์˜ ํ˜์‹ ์„ ์ด๋Œ๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค. ์ฟ ํŒก์€ ๊ฐ€์žฅ ๋น ๋ฅด๊ฒŒ ์„ฑ์žฅํ•˜๋Š” ์ด์ปค๋จธ์Šค ๊ธฐ์—… ์ค‘ ํ•˜๋‚˜๋กœ, ๊ตญ๋‚ด ์ปค๋จธ์Šค ์—…๊ณ„์—์„œ์˜ ๋…๋ณด์ ์ธ ์ž…์ง€์™€, ๊ณ ๊ฐ ์‹ ๋ขฐ๋ฅผ ๊ตฌ์ถ•ํ–ˆ์Šต๋‹ˆ๋‹ค.

์ฟ ํŒก์€ ์Šคํƒ€ํŠธ์—… ๋ฌธํ™”๋ฅผ ๊ธฐ๋ฐ˜์œผ๋กœ ํ•œ ๊ธ€๋กœ๋ฒŒ ๋Œ€ํ˜• ์ƒ์žฅ์‚ฌ๋ผ๊ณ  ์ž๋ถ€ํ•ฉ๋‹ˆ๋‹ค. ์ด๊ฒƒ์ด ์ฐฝ๋ฆฝ ๋‹น์‹œ์˜ ๊ธฐ๋ฏผํ•จ์„ ์œ ์ง€ํ•˜๋ฉฐ, ์‹ ๊ทœ ์„œ๋น„์Šค๋ฅผ ๋Š์ž„์—†์ด ์ถœ์‹œํ•˜๋ฉฐ ๋น„์ฆˆ๋‹ˆ์Šค๋ฅผ ํ™•์žฅํ•ด ๋‚˜๊ฐ€๋Š” ์šฐ๋ฆฌ์˜ ์„ฑ์žฅ ๋™๋ ฅ์ž…๋‹ˆ๋‹ค. ์ฟ ํŒก์˜ ๋ชจ๋“  ์ž„์ง์›์—๊ฒŒ๋Š” ๊ธฐ์—…๊ฐ€ ์ •์‹ ์„ ๊ฐ–์ถ”๊ณ  ์ƒˆ๋กœ์šด ํ˜์‹ ๊ณผ ์ด๋‹ˆ์…”ํ‹ฐ๋ธŒ๋ฅผ ์ถ”์ง„ํ•  ์ˆ˜ ์žˆ๋Š” ๊ธฐํšŒ๊ฐ€ ์ฃผ์–ด์ง‘๋‹ˆ๋‹ค. ์ฃผ์ € ์—†์ด ์ผ์— ๋›ฐ์–ด๋“ค์–ด ์„ฑ๊ณผ๋ฅผ ์ด๋ฃจ๊ณ ์ž ํ•˜๋Š” ๊ณผ๊ฐ์„ฑ์ด, ๋ฐ”๋กœ ์ฟ ํŒก์ด ์ผํ•˜๋Š” ๋ฐฉ์‹์˜ ๋ณธ์งˆ์ž…๋‹ˆ๋‹ค. ์ฟ ํŒก์—์„œ๋Š” ์—ฌ๋Ÿฌ๋ถ„ ์ž์‹ , ๋™๋ฃŒ, ํŒ€ ๊ทธ๋ฆฌ๊ณ  ํšŒ์‚ฌ ์ „์ฒด๊ฐ€ ๋งค์ผ ์„ฑ์žฅํ•˜๋Š” ๋ชจ์Šต์„ ๋ชฉ๊ฒฉํ•  ๊ฒƒ์ž…๋‹ˆ๋‹ค.

์ฟ ํŒก์˜ ๋ชจ๋“  ์ง์›์€ ์ปค๋จธ์Šค์˜ ๋ฏธ๋ž˜๋ฅผ ๋งŒ๋“ค๊ฒ ๋‹ค๋Š” ์ฟ ํŒก์˜ ๋ฏธ์…˜์— ์ง„์‹ฌ์ž…๋‹ˆ๋‹ค. ์šฐ๋ฆฌ๋Š” ๊ณ ๊ฐ์˜ ๋ฌธ์ œ๋ฅผ ํ•ด๊ฒฐํ•ด ๋‚˜๊ฐ€๊ณ , ์ „ํ†ต์ ์ธ ๊ด€๋…๊ณผ ํ†ต๋…์— ๋งž์„œ๋ฉฐ ์‹คํ˜„ ๊ฐ€๋Šฅํ•œ ํ•œ๊ณ„๋ฅผ ๋›ฐ์–ด๋„˜๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค. ๊ณ ๊ฐ€์šฉ์„ฑ (always-on) ๊ณผ ์ตœ์ฒจ๋‹จ์˜ ์•ž์„  ๊ธฐ์ˆ  (high-tech), ์ดˆ์—ฐ๊ฒฐ์‚ฌํšŒ (hyper-connected world) ์—์„œ์˜ ๋†€๋ผ์šด ์—…๋ฌด ๊ฒฝํ—˜์„ ์›ํ•˜์‹ ๋‹ค๋ฉด, ์ง€๊ธˆ ๋ฐ”๋กœ ์ฟ ํŒก์— ํ•ฉ๋ฅ˜ํ•˜์„ธ์š”.

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์กฐ์ง ์†Œ๊ฐœ (About the Team)

Coupang Ads ํ”Œ๋žซํผ์€ ๋งค๋‹ฌ ์ˆ˜์ฒœ๋งŒ ๋ช…์˜ ๊ณ ๊ฐ๊ณผ ์ˆ˜์‹ญ๋งŒ ๋ช…์˜ ํŒ๋งค์ž/๊ด‘๊ณ ์ฃผ๋ฅผ ์ •๋ฐ€ํ•˜๊ฒŒ ์—ฐ๊ฒฐํ•˜๋Š” ํ…Œํฌ ์กฐ์ง์ž…๋‹ˆ๋‹ค. Ads Growth ํŒ€์€ ์ตœ์ฒจ๋‹จ ๋จธ์‹ ๋Ÿฌ๋‹, ์ƒ์„ฑํ˜• AI(Generative AI), ๊ทธ๋ฆฌ๊ณ  ์—์ด์ „ํ‹ฑ AI(Agentic AI) ๊ธฐ์ˆ ์„ ํ™œ์šฉํ•˜์—ฌ ์ฟ ํŒก์˜ ๊ด‘๊ณ  ๋น„์ฆˆ๋‹ˆ์Šค ์„ฑ์žฅ์„ ๊ฒฌ์ธํ•˜๊ณ  ๊ด‘๊ณ ์ฃผ์˜ ํˆฌ์ž ์ˆ˜์ต๋ฅ (ROI)์„ ๊ทน๋Œ€ํ™”ํ•˜๋Š” ํ˜์‹ ์ ์ธ ์†”๋ฃจ์…˜์„ ๊ตฌ์ถ•ํ•ฉ๋‹ˆ๋‹ค.
์šฐ๋ฆฌ๋Š” ๋Œ€๊ทœ๋ชจ ์‹ค์‹œ๊ฐ„ ์˜ฅ์…˜(Auction) ์‹œ์Šคํ…œ ์ตœ์ ํ™”, ์ •๋ฐ€ํ•œ ํƒ€๊ฒŸํŒ…, ๊ทธ๋ฆฌ๊ณ  ๊ด‘๊ณ  ์บ ํŽ˜์ธ ์ƒ์„ฑ๋ถ€ํ„ฐ ๋…ธ์ถœ/์ตœ์ ํ™”๊นŒ์ง€์˜ ์ „ ๊ณผ์ •์„ ์ž์œจ์ ์œผ๋กœ ์ˆ˜ํ–‰ํ•˜๋Š” ์ฐจ์„ธ๋Œ€ AI ์‹œ์Šคํ…œ์„ ๊ฐœ๋ฐœํ•˜๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค.

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์—ญํ•  ๊ฐœ์š” (Role Overview)

Senior Staff Machine Learning Engineer๋Š” Ads Growth ํŒ€์˜ ํ•ต์‹ฌ ๊ธฐ์ˆ  ๋ฆฌ๋”(IC)๋กœ์„œ, ์ฟ ํŒก ๊ด‘๊ณ  ํ”Œ๋žซํผ์˜ ์ฐจ์„ธ๋Œ€ ์•„ํ‚คํ…์ฒ˜๋ฅผ ์„ค๊ณ„ํ•˜๊ณ  ์ค‘์žฅ๊ธฐ ๊ธฐ์ˆ ์  ๋ฐฉํ–ฅ์„ฑ์„ ์ •์˜ํ•ฉ๋‹ˆ๋‹ค.
๋‹จ์ˆœํžˆ ๋ชจ๋ธ์„ ํ•™์Šต์‹œํ‚ค๋Š” ๊ฒƒ์„ ๋„˜์–ด, Multi-Agent ์‹œ์Šคํ…œ, ์ž์œจ์  ์ถ”๋ก  ํŒŒ์ดํ”„๋ผ์ธ, ๋ณด์ƒ ๊ธฐ๋ฐ˜ ๊ฐ•ํ™”ํ•™์Šต(RL) ๋“ฑ ์ตœ์‹  ๊ธฐ์ˆ ์„ ๋Œ€๊ทœ๋ชจ ํ”„๋กœ๋•์…˜ ํ™˜๊ฒฝ์— ์ด์‹ํ•˜์—ฌ ๋น„์ฆˆ๋‹ˆ์Šค ์ž„ํŒฉํŠธ๋ฅผ ๋งŒ๋“ค์–ด๋ƒ…๋‹ˆ๋‹ค. ํŠนํžˆ ๊ธ€๋กœ๋ฒŒ ํ˜‘์—… ํ™˜๊ฒฝ์—์„œ ํ•œ๊ตญ์–ด์™€ ์˜์–ด ์–‘๊ตญ์–ด๋กœ ๋ช…ํ™•ํ•˜๊ฒŒ ์†Œํ†ตํ•˜๋ฉฐ ํฌ๋กœ์Šค ๊ธฐ๋Šฅ(Cross-functional) ์กฐ์ง์„ ๋ฆฌ๋“œํ•˜๊ณ , ๋ณต์žกํ•œ ํŠธ๋ ˆ์ด๋“œ์˜คํ”„ ๊ด€๊ณ„๋ฅผ ์กฐ์œจํ•˜๋Š” ์„ ๊ตฌ์ž์ ์ธ ์—ญํ• ์„ ์ˆ˜ํ–‰ํ•ฉ๋‹ˆ๋‹ค.


์ฃผ์š” ์—…๋ฌด (Responsibilities)

  • ์ฐจ์„ธ๋Œ€ ์—์ด์ „ํ‹ฑ ์‹œ์Šคํ…œ ์„ค๊ณ„: LangGraph, ReAct ๋“ฑ์„ ํ™œ์šฉํ•˜์—ฌ ๋ฉ€ํ‹ฐ ์—์ด์ „ํŠธ ์˜ค์ผ€์ŠคํŠธ๋ ˆ์ด์…˜, ๋„๊ตฌ ์‚ฌ์šฉ(Tool-usage), ์žฅ๋‹จ๊ธฐ ๋ฉ”๋ชจ๋ฆฌ ๋ฐ ์ž์œจ ์ถ”๋ก  ํŒŒ์ดํ”„๋ผ์ธ์„ ๊ฐ–์ถ˜ ๋Œ€๊ทœ๋ชจ Agentic AI ์‹œ์Šคํ…œ ๊ตฌ์ถ•
  • ๊ด‘๊ณ  ์ตœ์ ํ™” ๋ฐ ๋ชจ๋ธ๋ง: ํฌ์ŠคํŠธ ํŠธ๋ ˆ์ด๋‹ ๊ฐ•ํ™”ํ•™์Šต(RLHF, RLAIF, Reward Modeling)์„ ๋„์ž…ํ•˜์—ฌ ๊ด‘๊ณ ์ฃผ ์„ฑ๊ณผ ๋ฐ ์‚ฌ์šฉ์ž ๊ฒฝํ—˜์„ ๊ทน๋Œ€ํ™”ํ•˜๋Š” ๋ณด์ƒ ๊ธฐ๋ฐ˜ ์ตœ์ ํ™” ๋ชจ๋ธ ๊ฐœ๋ฐœ
  • LLM ๊ณ ๋„ํ™” ๋ฐ ์ธํ”„๋ผ ๊ตฌ์ถ•: ๋Œ€๊ทœ๋ชจ ์–ธ์–ด ๋ชจ๋ธ(LLM)์˜ ํŒŒ์ธํŠœ๋‹, ์ง€์‹ ์ฆ๋ฅ˜(Distillation), ๋Œ€๊ทœ๋ชจ ๋ถ„์‚ฐ ์„œ๋น™ ๋ฐ ์‹ค์‹œ๊ฐ„ ์ถ”๋ก (Inference) ํšจ์œจํ™” ์•„ํ‚คํ…์ฒ˜ ๋ฆฌ๋“œ
  • ๋ฐ์ดํ„ฐ ๊ธฐ๋ฐ˜์˜ ํ˜์‹ : ๋ณต์žกํ•˜๊ณ  ๊ฑฐ๋Œ€ํ•œ ๊ด‘๊ณ  ๋ฐ์ดํ„ฐ์…‹์„ ํƒ์ƒ‰ํ•˜์—ฌ ์ˆจ๊ฒจ์ง„ ํŒจํ„ด์„ ์‹๋ณ„ํ•˜๊ณ , ์ด๋ฅผ ๊ณ„๋Ÿ‰ํ™”๋œ ๊ด‘๊ณ  ํผํฌ๋จผ์Šค(CTR, CVR, tROAS ๋‹ฌ์„ฑ๋ฅ  ๋“ฑ) ๊ฐœ์„ ์œผ๋กœ ์—ฐ๊ฒฐ
  • ๊ธ€๋กœ๋ฒŒ ๊ธฐ์ˆ  ๋ฆฌ๋”์‹ญ ๋ฐ ์–ผ๋ผ์ธ๋จผํŠธ: Ads Growth์˜ ์ค‘์žฅ๊ธฐ ๊ธฐ์ˆ  ๋กœ๋“œ๋งต์„ ์„ค์ •ํ•˜๊ณ , ๊ตญ/์˜๋ฌธ ํ…Œํฌ๋‹ˆ์ปฌ ๋””์ž์ธ ๋ฌธ์„œ(Design Docs) ์ž‘์„ฑ์„ ํ†ตํ•ด ๊ธ€๋กœ๋ฒŒ ์œ ๊ด€ ๋ถ€์„œ(Product, Infrastructure ๋“ฑ)์™€ ๋ณต์žกํ•œ ํŠธ๋ ˆ์ด๋“œ์˜คํ”„ ์กฐ์œจ ๋ฐ ์‹ฑํฌ ์–ผ๋ผ์ธ
  • ์—”์ง€๋‹ˆ์–ด๋ง ์—‘์„ค๋Ÿฐ์Šค: ์ฒ ์ €ํ•œ ์ฝ”๋“œ ๋ฆฌ๋ทฐ, ํ…Œ์ŠคํŠธ ์ž๋™ํ™”, CI/CD, ์‹œ์Šคํ…œ ๋””์ž์ธ ๊ฐ€์ด๋“œ๋ฅผ ํ†ตํ•ด ์ตœ๊ณ  ์ˆ˜์ค€์˜ ์†Œํ”„ํŠธ์›จ์–ด ์—”์ง€๋‹ˆ์–ด๋ง ํ”„๋ž™ํ‹ฐ์Šค ์ „ํŒŒ (Claude Code ๋“ฑ AI ์ฝ”๋”ฉ ์—์ด์ „ํŠธ๋ฅผ ์ ๊ทน ํ™œ์šฉํ•˜์—ฌ ๊ฐœ๋ฐœ ์›Œํฌํ”Œ๋กœ์šฐ ๊ฐ€์†ํ™”)

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์ž๊ฒฉ ์š”๊ฑด (Basic Qualifications)

  • ์ปดํ“จํ„ฐ๊ณตํ•™, ์—”์ง€๋‹ˆ์–ด๋ง, ์ˆ˜ํ•™, ํ†ต๊ณ„ํ•™ ๋˜๋Š” ๊ด€๋ จ ๋ถ„์•ผ์˜ ํ•™์‚ฌ ํ•™์œ„ ์ด์ƒ
  • ํƒ์›”ํ•œ ์ปค๋ฎค๋‹ˆ์ผ€์ด์…˜ ์Šคํ‚ฌ ๋ณด์œ ์ž (๊ธ€๋กœ๋ฒŒ ํŒ€ ๋ฐ ๋‹ค๊ตญ์  ์ดํ•ด๊ด€๊ณ„์ž์™€์˜ ์›ํ™œํ•œ ์—…๋ฌด ์กฐ์œจ ์ฒด๊ณ„ ํ•„์ˆ˜)
  • ๋Œ€๊ทœ๋ชจ ํ”„๋กœ๋•์…˜ ๋จธ์‹ ๋Ÿฌ๋‹(ML) ์‹œ์Šคํ…œ์„ ์„ค๊ณ„, ๋ฐฐํฌ ๋ฐ ์šด์˜ํ•œ 10๋…„ ์ด์ƒ์˜ ์ „๋ฌธ ๊ฒฝ๋ ฅ
  • Agentic AI ์‹œ์Šคํ…œ ๊ตฌ์ถ• ๊ฒฝํ—˜: ๋ฉ€ํ‹ฐ ์—์ด์ „ํŠธ ์˜ค์ผ€์ŠคํŠธ๋ ˆ์ด์…˜, ํ”Œ๋ž˜๋‹, ์ž์œจ ์ถ”๋ก  ํŒŒ์ดํ”„๋ผ์ธ ์„ค๊ณ„ ๋ฐ ๊ตฌํ˜„ ๊ฒฝํ—˜ (์˜ˆ: ReAct ํ”„๋ ˆ์ž„์›Œํฌ, LangGraph ๋“ฑ ํ™œ์šฉ)
  • ๊ณ ๋„ํ™”๋œ ์†Œํ”„ํŠธ์›จ์–ด ์—”์ง€๋‹ˆ์–ด๋ง ์—ญ๋Ÿ‰ ๋ฐ ํ”„๋กœ๊ทธ๋ž˜๋ฐ ์Šคํ‚ฌ (Python ์ˆ™๋ จ์ž, Test-driven ๊ฐœ๋ฐœ, CI/CD ๋ฐ ํ™•์žฅ ๊ฐ€๋Šฅํ•œ ์‹œ์Šคํ…œ ๋””์ž์ธ ์—ญ๋Ÿ‰)
  • ๊ธฐ์ˆ  ๋ฆฌ๋”์‹ญ ์—ญ๋Ÿ‰: ์ฃผ๋„์ ์œผ๋กœ ๊ธฐ์ˆ  ๋ฐฉํ–ฅ์„ฑ๊ณผ ๋กœ๋“œ๋งต์„ ์„ค์ •ํ•˜๊ณ , ์—”์ง€๋‹ˆ์–ด๋“ค์„ ๋ฉ˜ํ† ๋งํ•˜๋ฉฐ, ์ „์‚ฌ์ /๊ต์ฐจ ๋ถ€์„œ ๊ฐ„ ์–ผ๋ผ์ธ๋จผํŠธ๋ฅผ ์ด๋Œ์–ด๋‚ธ ๊ฒฝํ—˜

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์šฐ๋Œ€ ์‚ฌํ•ญ (Preferred Qualifications)

  • ์ปดํ“จํ„ฐ๊ณตํ•™, ์—”์ง€๋‹ˆ์–ด๋ง, ์ˆ˜ํ•™, ํ†ต๊ณ„ํ•™ ๋˜๋Š” ๊ด€๋ จ ๋ถ„์•ผ์˜ ์„์‚ฌ ๋˜๋Š” ๋ฐ•์‚ฌ ํ•™์œ„(Ph.D.)
  • ๋Œ€๊ทœ๋ชจ ๋””์ง€ํ„ธ ๊ด‘๊ณ  ์‹œ์Šคํ…œ(Advertising Systems)์— ๋Œ€ํ•œ ๊นŠ์€ ์ดํ•ด ๋ฐ ๊ฐœ๋ฐœ ๊ฒฝํ—˜
  • ๋ณด์ƒ ๊ธฐ๋ฐ˜ ์ตœ์ ํ™”(Reward-based optimization)๋ฅผ ์œ„ํ•œ ํฌ์ŠคํŠธ ํŠธ๋ ˆ์ด๋‹ ๊ฐ•ํ™”ํ•™์Šต(RLHF, RLAIF ๋˜๋Š” ๋„๋ฉ”์ธ ํŠนํ™” ๋ฆฌ์›Œ๋“œ ๋ชจ๋ธ๋ง) ๊ฒฝํ—˜
  • LLM ํŒŒ์ธํŠœ๋‹, ์ฆ๋ฅ˜(Distillation), ๋Œ€๊ทœ๋ชจ serving/inference ์ธํ”„๋ผ ์ตœ์ ํ™” ๊ฒฝํ—˜
  • End-to-End ๋ชจ๋ธ ํŠธ๋ ˆ์ด๋‹ ๋ฐ ์„œ๋น™ ํŒŒ์ดํ”„๋ผ์ธ(Feature Store, ์˜จ/์˜คํ”„๋ผ์ธ ํ‰๊ฐ€, A/B ํ…Œ์ŠคํŠธ ํ”„๋ ˆ์ž„์›Œํฌ) ๊ตฌ์ถ• ๊ฒฝํ—˜
  • ๋ณต์žกํ•œ ๋Œ€์šฉ๋Ÿ‰ ๋ฐ์ดํ„ฐ์…‹์—์„œ ์ธ์‚ฌ์ดํŠธ๋ฅผ ๋„์ถœํ•˜๊ณ , ์ด๋ฅผ ์ธก์ • ๊ฐ€๋Šฅํ•œ ๊ด‘๊ณ  ์„ฑ๊ณผ ์ง€ํ‘œ๋กœ ์ „ํ™˜ํ•œ ์„ฑ๊ณต ํŠธ๋ž™ ๋ ˆ์ฝ”๋“œ
  • Claude Code ๋“ฑ ์ตœ์‹  ์ฝ”๋”ฉ ์—์ด์ „ํŠธ/AI ํˆด์„ ํ™œ์šฉํ•˜์—ฌ AI ๊ฐœ๋ฐœ ์›Œํฌํ”Œ๋กœ์šฐ๋ฅผ ๊ทน๋Œ€ํ™”ํ•ด ๋ณธ ๊ฒฝํ—˜
  • ํƒ์›”ํ•œ ์„œ๋ฉด ์ปค๋ฎค๋‹ˆ์ผ€์ด์…˜ ๋Šฅ๋ ฅ (๋ณต์žกํ•œ ๊ธฐ์ˆ ์  ํŠธ๋ ˆ์ด๋“œ์˜คํ”„๋ฅผ ๋ช…ํ™•ํ•œ ๋””์ž์ธ ๋ฌธ์„œ๋กœ ์‹œ๊ฐํ™” ๋ฐ ๋ฌธ์„œํ™”ํ•˜์—ฌ ๋‹ค๊ตญ์  ์ดํ•ด๊ด€๊ณ„์ž๋ฅผ ์„ค๋“ํ•  ์ˆ˜ ์žˆ๋Š” ์—ญ๋Ÿ‰)

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์ „ํ˜• ์ ˆ์ฐจ ๋ฐ ์•ˆ๋‚ด์‚ฌํ•ญ

์ „ํ˜• ์ ˆ์ฐจ

  • ์„œ๋ฅ˜์ „ํ˜• > 1์ฐจ ๋ฉด์ ‘ > 2์ฐจ ๋ฉด์ ‘
  • ๋ชจ๋“  ๋ฉด์ ‘์€ ๋น„๋Œ€๋ฉด ํ™”์ƒ๋ฉด์ ‘์œผ๋กœ ์ง„ํ–‰๋ฉ๋‹ˆ๋‹ค.
  • ์ „ํ˜• ์ ˆ์ฐจ๋Š” ์ง๋ฌด๋ณ„๋กœ ๋‹ค๋ฅด๊ฒŒ ์šด์˜๋  ์ˆ˜ ์žˆ์œผ๋ฉฐ, ์ผ์ • ๋ฐ ์ƒํ™ฉ์— ๋”ฐ๋ผ ๋ณ€๋™๋  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.

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์ฐธ๊ณ  ์‚ฌํ•ญ

  • ๋ณธ ๊ณต๊ณ ๋Š” ๋ชจ์ง‘ ์™„๋ฃŒ ์‹œ ์กฐ๊ธฐ ๋งˆ๊ฐ๋  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
  • ์ง€์›์„œ ๋‚ด์šฉ ์ค‘ ํ—ˆ์œ„์‚ฌ์‹ค์ด ์žˆ๋Š” ๊ฒฝ์šฐ์—๋Š” ํ•ฉ๊ฒฉ์ด ์ทจ์†Œ๋  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
  • ์ทจ์—… ๋ณดํ˜ธ ๋Œ€์ƒ์ž(๋ณดํ›ˆ๋Œ€์ƒ์ž, ์žฅ์• ์ธ ๋“ฑ)๋Š” ๊ด€๋ จ ๋ฒ•๋ฅ ์— ๋”ฐ๋ผ ์ฑ„์šฉ์šฐ๋Œ€๋ฅผ ๋ฐ›์„ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
  • ์ง๊ธ‰๊ณผ ๋‹ด๋‹น ์—…๋ฌด ๋ฒ”์œ„๋Š” ํ›„๋ณด์ž์˜ ์ „๋ฐ˜์ ์ธ ๊ฒฝ๋ ฅ๊ณผ ๊ฒฝํ—˜ ๋“ฑ ์ œ๋ฐ˜ ์‚ฌ์ •์„ ๊ณ ๋ คํ•˜์—ฌ ๋ณ€๊ฒฝ๋  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ์ด๋Ÿฌํ•œ ๋ณ€๊ฒฝ์ด ํ•„์š”ํ•  ๊ฒฝ์šฐ, ์ตœ์ข… ํ•ฉ๊ฒฉ ํ†ต์ง€ ์ „ ์ ์ ˆํ•œ ์‹œ๊ธฐ์— ํ›„๋ณด์ž์™€ ์ปค๋ฎค๋‹ˆ์ผ€์ด์…˜ ๋  ์˜ˆ์ •์ž…๋‹ˆ๋‹ค.

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๊ฐœ์ธ์ •๋ณด ์ฒ˜๋ฆฌ๋ฐฉ์นจ

  • ์ฟ ํŒก ๊ทธ๋ฃน์€ ์ž…์‚ฌ์ง€์›์ž ๊ฐœ์ธ์ •๋ณด ์ฒ˜๋ฆฌ๋ฐฉ์นจ(์•„๋ž˜ ๋งํฌ)์— ๋”ฐ๋ผ ๊ท€ํ•˜์˜ ๊ฐœ์ธ์ •๋ณด๋ฅผ ์ˆ˜์ง‘ํ•˜์—ฌ ์ฒ˜๋ฆฌํ•ฉ๋‹ˆ๋‹ค.
  • https://www.coupang.jobs/kr/privacy-policy

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์„œ๋ฅ˜ ๋ฐ˜ํ™˜ ์ •์ฑ…

  • ๋ณธ ๊ณ ์ง€๋Š” ใ€Ž์ฑ„์šฉ์ ˆ์ฐจ์˜ ๊ณต์ •ํ™”์— ๊ด€ํ•œ ๋ฒ•๋ฅ ใ€ ์ œ11์กฐ ์ œ6ํ•ญ์— ๋”ฐ๋ฅธ ๊ฒƒ์ž…๋‹ˆ๋‹ค.
  • ๋‹น์‚ฌ ์ฑ„์šฉ์— ์‘์‹œํ•œ ๊ตฌ์ง์ž ์ค‘ ์ตœ์ข…ํ•ฉ๊ฒฉ์ด ๋˜์ง€ ๋ชปํ•œ ๊ตฌ์ง์ž๋Š” ใ€Ž์ฑ„์šฉ์ ˆ์ฐจ์˜ ๊ณต์ •ํ™”์— ๊ด€ํ•œ ๋ฒ•๋ฅ ใ€์— ๋”ฐ๋ผ ์ œ์ถœํ•œ ์ฑ„์šฉ์„œ๋ฅ˜์˜ ๋ฐ˜ํ™˜์„ ์ฒญ๊ตฌํ•  ์ˆ˜ ์žˆ์Œ์„ ์•Œ๋ ค ๋“œ๋ฆฝ๋‹ˆ๋‹ค. ๋‹ค๋งŒ, ํ™ˆํŽ˜์ด์ง€ ๋˜๋Š” ์ „์ž์šฐํŽธ์œผ๋กœ ์ œ์ถœ๋œ ๊ฒฝ์šฐ๋‚˜ ๊ตฌ์ง์ž๊ฐ€ ๋‹น์‚ฌ์˜ ์š”๊ตฌ ์—†์ด ์ž๋ฐœ์ ์œผ๋กœ ์ œ์ถœํ•œ ๊ฒฝ์šฐ์—๋Š” ๊ทธ๋Ÿฌํ•˜์ง€ ์•„๋‹ˆํ•˜๋ฉฐ, ์ฒœ์žฌ์ง€๋ณ€์ด๋‚˜ ๊ทธ ๋ฐ–์— ๋‹น์‚ฌ์—๊ฒŒ ์ฑ…์ž„ ์—†๋Š” ์‚ฌ์œ ๋กœ ์ฑ„์šฉ์„œ๋ฅ˜๊ฐ€ ๋ฉธ์‹ค๋œ ๊ฒฝ์šฐ์—๋Š” ๋ฐ˜ํ™˜ํ•œ ๊ฒƒ์œผ๋กœ ๋ด…๋‹ˆ๋‹ค.
  • ์œ„ 2ํ•ญ ๋ณธ๋ฌธ์— ๋”ฐ๋ผ ์ฑ„์šฉ์„œ๋ฅ˜ ๋ฐ˜ํ™˜ ์ฒญ๊ตฌ๋ฅผ ํ•˜๋Š” ๊ตฌ์ง์ž๋Š” ์ฑ„์šฉ์„œ๋ฅ˜ ๋ฐ˜ํ™˜์ฒญ๊ตฌ์„œ[์ฑ„์šฉ์ ˆ์ฐจ์˜ ๊ณต์ •ํ™”์— ๊ด€ํ•œ ๋ฒ•๋ฅ  ์‹œํ–‰๊ทœ์น™ ๋ณ„์ง€ ์ œ3ํ˜ธ ์„œ์‹]๋ฅผ ์ž‘์„ฑํ•˜์—ฌ ๋‹น์‚ฌ ์ด๋ฉ”์ผ (recruitingops@coupang.com) ๋กœ ์ œ์ถœํ•˜๋ฉด, ์ œ์ถœ์ด ํ™•์ธ๋œ ๋‚ ๋กœ๋ถ€ํ„ฐ 14์ผ ์ด๋‚ด์— ์ง€์ •ํ•œ ์ฃผ์†Œ์ง€๋กœ ๋“ฑ๊ธฐ์šฐํŽธ์„ ํ†ตํ•˜์—ฌ ๋ฐœ์†กํ•ด ๋“œ๋ฆฝ๋‹ˆ๋‹ค. ์ด ๊ฒฝ์šฐ ๋“ฑ๊ธฐ์šฐํŽธ์š”๊ธˆ์€ ์ˆ˜์‹ ์ž ๋ถ€๋‹ด์œผ๋กœ ํ•˜๊ฒŒ ๋˜์˜ค๋‹ˆ ์œ ๋…ํ•˜์‹œ๊ธฐ ๋ฐ”๋ž๋‹ˆ๋‹ค.
  • ๋‹น์‚ฌ๋Š” ์œ„ 2ํ•ญ ๋ณธ๋ฌธ์— ๋”ฐ๋ฅธ ๊ตฌ์ง์ž์˜ ๋ฐ˜ํ™˜ ์ฒญ๊ตฌ์— ๋Œ€๋น„ํ•˜์—ฌ ์ฑ„์šฉ ์—ฌ๋ถ€๊ฐ€ ํ™•์ •๋œ ๋‚ ๋กœ๋ถ€ํ„ฐ 180์ผ ๊ฐ„ ๊ตฌ์ง์ž๊ฐ€ ์ œ์ถœํ•œ ์ฑ„์šฉ์„œ๋ฅ˜ ์›๋ณธ์„ ๋ณด๊ด€ํ•˜๊ฒŒ ๋˜๋ฉฐ, ๊ทธ๋•Œ๊นŒ์ง€ ์ฑ„์šฉ์„œ๋ฅ˜์˜ ๋ฐ˜ํ™˜์„ ์ฒญ๊ตฌํ•˜์ง€ ์•„๋‹ˆํ•  ๊ฒฝ์šฐ์—๋Š” ใ€Ž๊ฐœ์ธ์ •๋ณด ๋ณดํ˜ธ๋ฒ•ใ€์— ๋”ฐ๋ผ ์ง€์ฒด ์—†์ด ์ฑ„์šฉ์„œ๋ฅ˜ ์ผ์ฒด๋ฅผ ํŒŒ๊ธฐํ•  ์˜ˆ์ •์ž…๋‹ˆ๋‹ค.
  • ์ฑ„์šฉ ๋ฐ ์—…๋ฌด ์ˆ˜ํ–‰๊ณผ ๊ด€๋ จํ•˜์—ฌ ์š”๊ตฌ๋˜๋Š” ๋ฒ•๋ น์ƒ ์ž๊ฒฉ์ด ๊ฐ–์ถ”์–ด์ง€์ง€ ์•Š์€ ๊ฒฝ์šฐ ์ฑ„์šฉ์ด ์ œํ•œ๋  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.

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Company Introduction

We exist to wow our customers. We know weโ€™re doing the right thing when we hear our customers say, โ€œHow did I ever live without Coupang?โ€ Born out of an obsession to make shopping, eating, and living easier than ever, weโ€™re collectively disrupting the multi-billion-dollar e-commerce industry from the ground up. We are one of the fastest-growing e-commerce companies that established an unparalleled reputation for being a dominant and reliable force in South Korean commerce.

We are proud to have the best of both worlds โ€” a startup culture with the resources of a large global public company. This fuels us to continue our growth and launch new services at the speed we have been since our inception. We are all entrepreneurs surrounded by opportunities to drive new initiatives and innovations. At our core, we are bold and ambitious people that like to get our hands dirty and make a hands-on impact. At Coupang, you will see yourself, your colleagues, your team, and the company grow every day.

Our mission to build the future of commerce is real. We push the boundaries of whatโ€™s possible to solve problems and break traditional tradeoffs. Join Coupang now to create an epic experience in this always-on, high-tech, and hyper-connected world.

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About the Team

The Coupang Ads Platform is a core technology organization that precisely connects tens of millions of customers with hundreds of thousands of merchants and advertisers every month. The Ads Growth team leverages cutting-edge Machine Learning, Generative AI, and Agentic AI technologies to drive Coupang's advertising business growth and maximize advertiser ROI.
We are building the next generation of AI systems that autonomously manage the entire advertising lifecycleโ€”from campaign creation and targeting to real-time auction optimization and budget delivery.

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Role Overview

As a Senior Staff Machine Learning Engineer and a high-level technical Individual Contributor (IC), you will define the technical direction and architect the next-generation foundation for Coupang's advertising platform.
Going beyond traditional model training, you will build and scale complex multi-agent systems, autonomous reasoning pipelines, and reward-based reinforcement learning systems in a massive production environment. Operating in a highly global environment, you will bridge technical and cross-functional teams by communicating fluently in both Korean and English, aligning stakeholders across complex engineering tradeoffs.

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Responsibilities

  • Architect Next-Gen Agentic Systems: Design and deploy large-scale Agentic AI systems featuring multi-agent orchestration, tool-usage, planning, memory, and autonomous reasoning pipelines utilizing frameworks such as ReAct and LangGraph.
  • Optimize Ad Delivery & Modeling: Implement post-training reinforcement learning (RLHF, RLAIF, or domain-specific reward modeling) to build reward-based optimization pipelines that maximize advertiser performance and shopper experience.
  • Scale LLM Capabilities: Lead the technical implementation of LLM fine-tuning, distillation, and high-throughput, low-latency serving/inference infrastructure at scale.
  • Drive Data-Driven Innovation: Explore massive, complex advertising datasets to discover non-obvious patterns, translating these insights into measurable advertising performance indicators (e.g., CTR, CVR, and tROAS attainment).
  • Global Technical Leadership & Alignment: Establish long-term technical roadmaps for Ads Growth. Author comprehensive technical design documents in English and Korean to align cross-functional, multinational stakeholders on complex architectural tradeoffs.
  • Promote Engineering Excellence: Champion rigorous software engineering practices, including comprehensive testing, automated CI/CD, and robust system design. Proactively accelerate AI development workflows using advanced coding agents (e.g., Claude Code).

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Basic Qualifications

  • Bachelorโ€™s degree in Computer Science, Engineering, Mathematics, Statistics, or a related technical field.
  • Strong communication skills (Essential for seamless collaboration with global teams and multinational stakeholders).
  • 10+ years of professional experience in applied machine learning, with a proven track record of shipping and scaling production ML systems.
  • Experience with Agentic AI Systems: Hands-on experience designing and building multi-agent orchestration, planning, memory, and autonomous reasoning pipelines (e.g., ReAct, LangGraph).
  • Strong Software Engineering Practices: Proficiency in Python combined with production-grade engineering disciplines (automated testing, rigorous code reviews, CI/CD, and scalable system design).
  • Proven Technical Leadership: Demonstrated ability to set technical directions, drive long-term roadmaps, mentor engineers, and establish alignment across cross-functional organizations.

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Preferred Qualifications

  • Masterโ€™s or Ph.D. in Computer Science, Engineering, Mathematics, or a related technical field.
  • Deep domain expertise in large-scale Digital Advertising Systems.
  • Experience with post-training reinforcement learning for reward-based optimization (RLHF, RLAIF, or domain-specific reward modeling).
  • Experience with LLM fine-tuning, distillation, and efficient serving/inference infrastructure optimization at scale.
  • Hands-on experience building and managing end-to-end model training and serving pipelines (Feature Stores, online/offline evaluation, and A/B testing frameworks).
  • A proven track record of diving into massive datasets, uncovering non-obvious patterns, and converting findings into quantifiable advertising performance metrics.
  • Experience accelerating AI development workflows using advanced coding agents (e.g., Claude Code).
  • Exceptional written communication skills, with the ability to write clean technical design docs that clearly articulate complex architectural tradeoffs to multinational stakeholders.

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Recruitment Process and Others

Recruitment Process

  • Application Review - Phone Interview - Onsite (or Virtual Onsite) Interview โ€“ Offer
  • The exact nature of the recruitment process may vary according to the specific job and may be changed due to scheduling or other circumstances.
  • Interview schedules and the results will be informed to the applicant via the e-mail address submitted at the application stage.

Details to Consider

  • This job posting may be closed prior to the stated end date for application if all openings are filled.
  • Coupang has the right to rescind an offer of employment if a candidate is found to have submitted false information as part of the application process.
  • Coupang does not discriminate against disabled applicants or those with veteran status. We are proud to offer equal opportunities for all applicants.
  • Job titles and responsibilities may be subject to change depending on the candidateโ€™s overall experience, etc. This will be communicated to the candidate at the appropriate time before the offer.

Privacy Notice

  • Your personal information will be collected and managed by Coupang as stated in the Application Privacy Notice located below.
  • https://www.coupang.jobs/en/privacy-policy/

Document Return Policy

  • This notification is given pursuant to Article 11 (6) of the Fair Hiring Procedure Act.
  • A job applicant, who has applied but not been finally selected for a position at Coupang (the โ€œCompanyโ€), may request the Company to return his/her hiring documents submitted pursuant to the Fair Hiring Procedure Act. However, this will not apply where the hiring documents were submitted via the website of the Company or e-mail, or where the job applicant submitted those documents voluntarily without a request from the Company. In addition, if the hiring documents were destroyed due to a natural disaster or any other reasons not attributable to the Company, such documents will be deemed to have been returned to the job applicant.
  • A job applicant who wishes to request the return of his/her hiring documents pursuant to the main sentence of paragraph 2 above should fill out a โ€œRequest for Return of Hiring Documentsโ€ [Annex Form No. 3 in the Enforcement Rule of the Fair Hiring Procedure Act] and submit It by email (recruitingops@coupang.com). In such case, within fourteen (14) days from the date of identifying the receipt of the request, the Company will send the hiring documents to the job applicantโ€™s designated address via registered mail. Please be informed that the job applicant is required to pay the postage on the registered mail.
  • In preparation for a job applicantโ€™s request for the return of hiring documents pursuant to the main sentence of paragraph 2 above, the Company shall retain the original hiring documents submitted by the job applicant for 180 days from the completion of the recruiting process. If no request is made until the end of this period, all of his/her hiring documents will be destroyed immediately in accordance with the Personal Information Protection Act.

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Staff~Sr. Staff, Machine Learning Engineer (Ads Engineering) ยท Coupang

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