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Toss

Fintech super-app for payments and banking

Data Engineer - Platform

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

About the Job

Requirements

  • Experience building and operating large-scale OLAP systems in production and improving performance and stability.
  • Experience maintaining or upgrading production data infrastructure without service interruption.
  • Understanding of the internal workings of open-source software and frameworks and ability to use them appropriately.
  • Familiarity with infrastructure deployment using Kubernetes and Ansible, and with Git-based continuous integration and delivery environments.
  • Understanding of how analytics pipelines are built and used, and ability to improve data infrastructure from the platform users’ perspective.

Responsibilities

  • Operate diverse data infrastructure, including Kafka, StarRocks, Airflow, Spark, and Elasticsearch, in Kubernetes and EC2 environments; establish operating standards for reliability, including monitoring, upgrades, and resource management.
  • Build and operate a real-time analytics platform based on StarRocks and Apache Iceberg.
  • Operate and improve the reliability of analytics pipelines based on Airflow, dbt, Snowflake, and StarRocks.

Desired Qualifications

  • Experience directly building and operating StarRocks or Apache Iceberg in a production environment.
  • Experience building and operating StarRocks clusters, including monitoring and performance optimization to create a stable operating environment.
  • Experience operating Apache Iceberg features and processes, including schema and partition evolution, snapshot management, and small-file compaction, and optimizing them.
  • Experience directly building and operating data infrastructure such as Kafka, Airflow, Spark, and Elasticsearch.
  • Experience operating data infrastructure in a Kubernetes environment or contributing to data-related open-source projects.

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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