Coupang Global LLC

Coupang Global LLC

Principal Engineer, ML

Seattle, USA · Principal

Sponsorship not specified$18k-$21kDetected 2 days ago
JavaC++Distributed SystemsMachine LearningLLMsRAGA/B TestingEpicLeadership

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odds of building a lasting career here

39Risky
Cap-exempt (no lottery)0
Sponsors this role90
Entry-level history0
PERM / green-card track0
Lottery odds (Level I)39
Fits your clock70

Thin sponsorship signal and lottery-bound (~15% per draw). A low-probability bet with your clock running. Prioritize cap-exempt roles and proven entry-level sponsors first.

Lottery odds assume a STEM candidate.

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Employer immigration record

from this employer's Department of Labor filings

Green-card filing pattern in this occupation

Context, not a finding about this posting: of this employer's 18 green-card filings in this occupation, 100% were for a worker who already held the job.

Green-card follow-through: 90%

Of 10 labor certifications old enough to have been used, 1 expired without the employer filing the next step. Median time from filing to decision: 492 days.100% of their filings were for a worker who already held the job.Only certifications past the 180-day window are counted — recent ones cannot have expired yet.

Files H-1B transfers

4 transfer filings in the last year, covering 4 workers. Median labor-condition decision: 8 days. An employer that already files transfers is one that can take over an existing H-1B.

Sourced from Department of Labor LCA, PERM and prevailing-wage disclosure data. Employer matching is by name, so figures may be split across an employer's legal entities. Absence of a filing means none appears in our copy of the data, not that none exists.

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About the role

  • Advertising plays a vital role in Coupang's ecosystem, enabling customers to discover relevant products while helping advertisers grow their businesses.
  • The Ads platform directly influences customer engagement, advertiser success, and long-term revenue growth at massive scale.
  • This is a highly influential individual contributor role requiring exceptional technical depth, strategic thinking, and cross-functional leadership.

Responsibilities

  • Lead the design and evolution of large-scale ad serving systems, including retrieval, ranking, auction, targeting, pacing, and measurement.
  • Drive platform modernization and adoption of emerging technologies, including large language models, generative AI, real-time inference, and next-generation ML infrastructure.
  • Identify and lead strategic technical investments that improve advertiser outcomes, customer experience, system scalability, and operational efficiency.
  • Influence architecture and engineering excellence across multiple organizations through technical leadership, design reviews, and mentorship.
  • Drive measurable business impact through innovations that improve engagement, conversion, relevance, advertiser ROI, revenue growth, system efficiency and cost.
  • Experience building and scaling AI/ML serving infrastructure, including optimization of GPU- and CPU-based systems for latency, throughput, and cost efficiency.

Requirements

  • Proven track record of architecting and operating mission-critical, high-throughput online systems at internet scale.
  • Strong understanding of large language models (LLMs), foundation models, retrieval-augmented generation (RAG), and production AI serving architectures.
  • Deep knowledge of retrieval and ranking systems, including:
  • Exceptional ability to influence technical direction across multiple teams and organizations without direct authority.

Nice to have

  • Experience in e-commerce, marketplaces, or consumer internet companies operating at significant scale.
  • Proven contributions to architectural transformations or platform modernization initiatives across large organizations.
  • Strong passion for exploring emerging technologies and translating innovation into business value.
  • Experience working in high-growth, fast-scaling technology companies.
  • Our compensation reflects the cost of labor across several US geographic markets.
  • The base pay for this position ranges from $207,900/year in our lowest geographic market to $386,100/year in our highest geographic market.
  • Employee Assistance Program (EAP) program
  • 401K Plan with Company Match

Compensation

  • Our compensation reflects the cost of labor across several US geographic markets.

Benefits

  • Define and drive the long-term technical vision, architecture, and strategy for Coupang's Ads Serving & ML Platform.
  • Partner with engineering, machine learning, product, and business leaders to align technical direction with company priorities and business objectives.
  • Serve as a recognized technical leader and domain expert in large-scale advertising systems and machine learning platforms.
  • 12+ years of experience building large-scale software platforms, machine learning systems, or distributed infrastructure.
  • Deep expertise in one or more user-facing machine learning domains, including advertising, search, recommendations, or personalization.
  • Strong understanding of modern machine learning systems, including model training, feature engineering, experimentation, online inference, evaluation, and production operations.

Company info

  • Principal Engineer, Ads Serving & ML Platform We exist to wow our customers.
  • 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 - a startup culture with the resources of a large global public company.
  • Coupang is seeking a Principal Engineer to define and lead the technical vision for our Ads Serving & ML Platform, one of the company's most critical business systems powered by large-scale machine learning and AI.

Visa & Work Authorization

  • litary or veteran status, use of a trained dog guide or service animal, political activities or affiliations, ancestry, citizenship, family and medical leave status, status as a victim of any violent crime, or any other
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This listing is sourced directly from Coupang Global LLC's careers page and normalized into a canonical job model.