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Toss

Fintech super-app for payments and banking

Server Developer - Market Platform

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

About the Job

Requirements

  • Able to solve complex problems.
  • Willing to embrace change and introduce new technologies, with a strong sense of responsibility.
  • Proficiency in Go, Kotlin, and the Spring Framework is preferred.
  • Experience developing mission-critical systems is preferred.
  • Experience with real-time data processing and network programming is preferred.

Responsibilities

  • Develop customer-facing APIs and WebSockets, as well as communications with external institutions.
  • Design, build, and operate systems for high-volume real-time data and low-latency event processing.
  • Consider and improve the overall architecture, including structures that are easy to deploy and operate, support reliability, and improve performance.
  • As the owner and developer of market data, identify needed features, gather input, set direction, and build them.

Desired Qualifications

  • Proficiency in Go, Kotlin, and the Spring Framework.
  • Experience developing mission-critical systems.
  • Experience with real-time data processing and network programming.

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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