Machine Learning Engineer, Artificial Intelligence Office - Travel Development Department (TDD)
Core
Build and deploy machine learning models to optimize Rakuten Travel's marketing activities, including item recommendation, user targeting, image optimization, and NLP tasks.
Role type
Machine Learning Engineer (Marketing Optimization)
Builds
Production ML models and APIs for travel product recommendations and user targeting
Domain
Online Travel / E-commerce
Deliverable
production ML models
Required skills
Machine learning (discriminative/generative models, SGD), Deep learning (image processing, NLP, Transformers, LLMs), Counterfactual learning, Optimal transport, Linear algebra, Calculus, Python, PyTorch or TensorFlow, GPU training, Experimental design (A/B testing, bandit algorithms, Bayesian testing)
Preferred skills
Production deployment experience, Publications in top conferences, Japanese fluency
Technologies
Python, PyTorch, TensorFlow, GPUs
Responsibilities
Collaborate with business side to define project requirements, Develop detailed dev specifications, Build and deploy ML models via APIs, Design and execute experiments to validate solutions, Conduct AB tests and bandit optimizations, Evaluate experimental results using statistical tests
Seniority
Mid-to-Senior, hands-on IC
