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Toss

Fintech super-app for payments and banking

Server Developer - Financial Marketplace

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

About the Job

Requirements

  • Experience designing and operating highly available, scalable systems.
  • Experience developing systems that process large-scale real-time traffic.
  • Experience using AI to automate operations, or strong interest in doing so.
  • Experience designing from a platform engineering perspective.
  • At least one year of practical work experience.

Responsibilities

  • Design and operate financial-domain products with scalability and stability in mind.
  • Work closely with partner companies to solve problems directly.
  • Execute quickly and lead necessary changes to achieve the domain’s medium- and long-term goals.
  • Introduce AI Agent-based operational automation across the domain and continuously expand the platform.

Desired Qualifications

  • Background knowledge in financial domains such as lending, cards, or insurance.
  • Interest in or experience with real-time data processing or Flink.
  • Experience building test infrastructure or mock servers.
  • Understanding of regulations and compliance, or experience designing governance.

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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