Staff, Machine Learning Engineer - Coupang Play

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  Own the architecture, development, and evolution of large-scale search, retrieval, ranking, recommendation, and personalization platforms.
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  Build content discovery solutions that help users find relevant content through search, recommendations, and personalized experiences.
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  Develop machine learning-driven systems that model user intent, content relationships, and user preferences to improve relevance and engagement.
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  Design, build, and operate scalable, low-latency online serving infrastructure for real-time retrieval, ranking, and recommendation workloads.
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  Drive continuous improvements in search and recommendation quality through experimentation, offline evaluation, and online A/B testing.
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  Define, monitor, and optimize key business and technical metrics, including relevance, engagement, conversion, latency, and system reliability.
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  Partner with ML Scientists, Product Managers, and cross-functional engineering teams to translate business objectives into scalable technical solutions.
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  Evaluate and adopt emerging technologies, algorithms, and industry best practices to advance Coupang Play's content discovery capabilities.

• Bachelor's degree or higher in Computer Science, Software Engineering, Machine Learning, or a related field.
• 7+ years of software engineering experience, including building and operating large-scale search, retrieval, recommendation, ranking, personalization, or other relevance-driven systems.
• Proven experience designing and building distributed backend systems with a strong focus on scalability, reliability, and low-latency performance.
• Strong programming skills in Python and at least one additional language such as Go, Java, Scala, or C++.
• Experience with cloud-native infrastructure and modern software engineering practices.
• Familiarity with search platforms, vector search technologies, large-scale indexing systems, or recommendation infrastructure.
• Solid understanding of machine learning concepts and experience applying data-driven approaches to improve customer experiences.
• Strong analytical and problem-solving skills, with the ability to evaluate system performance and drive measurable improvements.
• Excellent communication and collaboration skills, with experience working across engineering, product, and data science organizations.

• Experience with modern retrieval and ranking techniques, including lexical retrieval, semantic retrieval, embedding-based retrieval, hybrid retrieval, and learning-to-rank approaches.
• Strong understanding of information retrieval, recommendation systems, ranking systems, personalization, or other content discovery domains.
• Experience applying deep learning, foundation models, LLMs, or generative AI technologies to search, recommendation, or content discovery problems.
• Experience with experimentation platforms, online evaluation methodologies, A/B testing, and relevance measurement frameworks.
• Experience building or supporting multilingual content discovery experiences.
• Master's degree or Ph.D. in Computer Science, Machine Learning, Information Retrieval, or a related field.

• Application Review - 1st Job FitInterview - 2nd Tech Focus Interview - Leadership interview – 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.  

• This job posting may be closed prior to the stated end date for application if all openings are filled.  
• Coupang will be prioritizing applicants who have a current right to work in Singapore and do not require company sponsorship for an employment visa.
• 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. 
• Those eligible for employment protection (recipients of veteran’s benefits, the disabled, etc.) may receive preferential treatment for employment in accordance with applicable laws. 
• Job titles and responsibilities may be subject to change depending on the candidate’s overall experience, etc. This will be communicated to the candidate at the appropriate time before the offer. 
• Hiring may be restricted in case the legal qualifications required for hiring and work performance is not met.
• This is a full-time regular position and includes 12 weeks of probation period; provided, however, the probationary period may be either skipped, shortened or extended if necessary for business purposes.   

• Your personal information will be collected and managed by Coupang as stated in the Application Privacy Notice located below. 

https://privacy.coupang.com/en/land/jobs/