Coupang

Principal Engineer, ML

Coupang
Apply
4 hours ago

Base Salary

$208k - $386k/yr

Responsibilities

  • Define and drive the long-term technical vision, architecture, and strategy for the Ads Serving & ML Platform.
  • Lead the design and evolution of large-scale ad serving systems covering retrieval, ranking, auctions, targeting, pacing, and measurement.
  • Drive modernization involving large language models, generative AI, real-time inference, and next-generation ML infrastructure.
  • Lead strategic investments improving advertiser outcomes, customer experience, scalability, operational efficiency, and cost.
  • Partner with engineering, machine learning, product, and business leaders to align technical direction with company objectives.
  • Influence architecture and engineering excellence across organizations through technical leadership, design reviews, and mentorship.
  • Establish best practices for reliability, performance, scalability, observability, and operational excellence.
  • Drive measurable improvements in engagement, conversion, relevance, advertiser ROI, revenue, and system efficiency.

Requirements

  • 12+ years of experience building large-scale software platforms, machine learning systems, or distributed infrastructure.
  • Proven experience architecting and operating mission-critical, high-throughput online systems at internet scale.
  • Deep expertise in a user-facing machine learning domain such as advertising, search, recommendations, or personalization.
  • Strong understanding of model training, feature engineering, experimentation, online inference, evaluation, and production operations.
  • Experience building and scaling AI/ML serving infrastructure, including GPU- and CPU-based optimization for latency, throughput, and cost.
  • Strong understanding of large language models, foundation models, retrieval-augmented generation, and production AI serving architectures.
  • Deep knowledge of retrieval and ranking systems, relevance, personalization, candidate generation, experimentation, evaluation, and performance trade-offs.
  • Demonstrated ability to drive business impact through technical innovation and platform evolution.
  • Ability to influence technical direction across multiple teams and organizations without direct authority.
  • Strong software engineering skills in Java, C++, or Python.
  • Experience developing distributed systems that process and serve large-scale datasets with high availability and low latency.
  • MS or higher in Computer Science, Engineering, or a related technical discipline.
  • Preferred qualifications include advertising or sponsored search platforms, auction systems, e-commerce or consumer internet scale, real-time ML, recommendation systems, search infrastructure, personalization platforms, architectural transformation, and a PhD in a related field.

Benefits

  • Medical, dental, vision, life, AD&D, disability, FSA, HSA, and Employee Assistance Program coverage.
  • 401(k) plan with company match.
  • 18–21 days of paid time off annually based on tenure and 12 public holidays.
  • Paid parental leave and pre-tax commuter benefits.
  • Free electric car charging station.
  • Base pay range varies by US geographic market; the role is covered by benefits and may include additional bonus or equity compensation.
Coupang

About Coupang

10,000+ employees

Coupang is a technology and Fortune 150 company listed on the New York Stock Exchange (NYSE: CPNG) that provides retail, restaurant delivery, video streaming, and fintech services to customers around the world under brands that include Coupang, Eats, Play, Rocket Now, and Farfetch.

Contact me