T

Toss

Fintech super-app for payments and banking

Data Analyst

Data AnalysisConfirmed live in the last 24 hours
Full-timeSeoul, South KoreaNo salary listedIn-person

About the Job

Requirements

  • At least 7 years of professional experience in data analysis or equivalent experience.
  • Ability to identify the core of a problem, consider the impact of analysis beyond the immediate team on company strategy and business, and proactively propose solutions.
  • Ability to analyze data in depth using Python or R and correctly interpret experimental results based on statistical knowledge.
  • Ability to communicate and persuade non-specialist colleagues by explaining complex analytical results in accessible language.

Responsibilities

  • Lead product and user analysis while designing the metrics framework, analysis standards, and data-use environment within the Data Analyst chapter.
  • Use problem structuring and decision-making frameworks to lead data-driven decisions and positively influence how fellow Data Analysts work.
  • Define business problems and hypotheses rather than only extracting requested data, validate hypotheses using appropriate methods such as causal inference and A/B testing, and derive actionable recommendations.
  • Identify limitations in existing perspectives and design new analytical frameworks and metrics to define and solve problems.
  • Reconcile stakeholder interests and trade-offs among metrics across squads to support company-wide prioritization decisions.
  • Develop reusable data structures that colleagues can use repeatedly, beyond one-off analyses.
  • Design data marts and validate data consistency to establish trusted data standards.
  • Identify bottlenecks and repetitive work from problem definition through communicating results, and improve the analytical environment and working practices to increase chapter-wide efficiency.
  • Use technologies such as AI and large language models to automate repetitive work and create an environment focused on higher-value problem-solving.
  • Adopt new analytical methods and tools to improve productivity.
  • Create standards for analytical documentation, queries, and metric definitions, and build a knowledge base so analytical assets accumulate within the organization.
  • Support and review fellow analysts' problem-solving and improve analytical quality across the chapter.
  • Work with app log data and financial transaction data to solve product problems within a squad.
  • Use Impala SQL to examine data, Tableau for visualization, and Python through Jupyter Notebook as needed.

Desired Qualifications

  • Experience participating from the service-planning and logging-design stages.
  • Experience improving work processes using new technologies such as AI.
  • Experience designing and propagating organization-wide data standards, such as company-wide logging standards, unified user definitions, or data governance policies.
  • Experience designing a company-wide metrics framework or building an analytical knowledge base that increases data use by non-analysts.

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

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