T

Toss

Fintech super-app for payments and banking

Machine Learning Engineer – Commerce Recommendation

Applied Machine LearningConfirmed live in the last 24 hours
Full-timeSeoul, South KoreaNo salary listedIn-person

About the Job

Requirements

  • Experience developing recommendation systems or prediction-based ranking models is desirable.
  • Experience designing and improving machine-learning models to predict user responses such as click-through rate and conversion rate is sought.
  • Experience experimenting with models using diverse features, tuning them, and analyzing results is desirable.
  • Familiarity with major machine-learning frameworks such as PyTorch, TensorFlow, or LightGBM is desirable.
  • Experience engaging deeply in problem definition and performance analysis beyond simply training models is welcomed.
  • Ability to think in a data-driven way and clearly explain complex problems is important.

Responsibilities

  • Develop models that predict product click-through rate, conversion rate, and related outcomes based on user behavior, product information, and contextual data.
  • Design and enhance recommendation algorithms that optimize product exposure using prediction results.
  • Conduct iterative experiments, including model performance analysis, feature engineering, and hyperparameter tuning, to improve recommendation quality.
  • Quantitatively validate the impact of model improvements through varied experiments and offline and online metric analysis.
  • Collaborate as needed with domain experts and data analysts to define recommendation problems appropriately and solve them.

Desired Qualifications

  • A recommendation-system or prediction-based ranking model development background is desirable.
  • Experience with model experiments using diverse features, tuning, and analysis is desirable.

About the Company

Toss

Fintech super-app for payments and banking

Toss is a South Korean financial services platform that started as a peer-to-peer money transfer service and has grown into a digital 'super app' for personal finance. Its products are accessed through one mobile interface that unifies bank accounts, credit cards, loans, investments, and other financial services, including its own Toss Bank and Toss Securities. It differentiates itself by offering a broad, integrated ecosystem—combining digital banking, asset management, and brokerage services under one roof and running its own banking and securities units. Its goal is to become the leading consumer finance platform in South Korea while expanding its user base globally.

Company size
1,001-5,000
Company stage
Series G
Total funding
$1.5B
Headquarters
Seoul, South Korea
Founded
2011

Recently Posted Jobs

Explore more opportunities at Toss

See more jobs