Staff~Sr. Staff, Machine Learning Engineer (Ads Engineering)
Coupang · Seoul, South Korea
Posted about 3 months ago
or apply directly on Coupang's site. We never take the application ourselves.
Is this posting real?
- This role has been open
- 80 days Coupang's roles stay open a median of 80 days
- Reposted
- No
- Salary listed
- No 1% of Coupang's roles list one
- Ghost-job risk at Coupang
- high 683 stale, 14 reposted of 717 open
- Hiring momentum
- 1065 roles opened in the last 90 days ↑ up vs. the prior 90 days
- Last confirmed on the employer's board
- 2026-10-22
Measured from postings appearing on and disappearing from Coupang's own greenhouse board since 2026-08-03. Full hiring picture for Coupang.
About this role
The Staff/Sr. Staff Machine Learning Engineer at Coupang will lead the Ads Growth team in designing and implementing next-generation AI systems for the advertising platform. Responsibilities include optimizing ad delivery through advanced machine learning techniques, architecting multi-agent systems, and ensuring engineering excellence. The role requires collaboration in a global environment, leveraging both Korean and English to align cross-functional teams and stakeholders.
- benefits
- 1/5
- freshness
- 1/5
- career value
- 5/5
- role clarity
- 5/5
- pay transparency
- 0/5
Scored from the posting itself — how clearly the role is described, how much it says about pay and benefits, and how recently it was listed. Not a judgement of Coupang as an employer.
What you need
- Bachelor’s degree in Computer Science, Engineering, Mathematics, Statistics, or a related technical field
- Strong communication skills for collaboration with global teams
- 10+ years of professional experience in applied machine learning with a track record of shipping production ML systems
- Experience with Agentic AI Systems including multi-agent orchestration and autonomous reasoning pipelines
- Proficiency in Python and strong software engineering practices including automated testing and CI/CD
- Proven technical leadership with experience in setting technical directions and mentoring engineers
Nice to have
- Master’s or Ph.D. in Computer Science, Engineering, Mathematics, or a related technical field
- Deep understanding of large-scale Digital Advertising Systems
- Experience with post-training reinforcement learning for reward-based optimization
- Experience with LLM fine-tuning and efficient serving/inference infrastructure optimization
- Hands-on experience with end-to-end model training and serving pipelines
Worth weighing
- No salary listed
- The role involves complex multi-agent systems which may require a steep learning curve
- The position demands bilingual communication in Korean and English
- High expectations for technical leadership and innovation may lead to a challenging work environment
Summarised from Coupang's posting. Read the full original.
Listed by Coupang on their greenhouse job board, last confirmed open on 2026-10-22. PitchMeAI is not the employer.
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