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Toss

Fintech super-app for payments and banking

Android Developer

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

About the Job

Requirements

  • Possess Android development skills equivalent to at least 3 years of professional experience.
  • Have a deep understanding of the Android platform.
  • Experience proactively solving complex problems in a large-scale service is an advantage.

Responsibilities

  • Develop Toss Android services in collaboration with Product Owners, Product Designers, Server Developers, and colleagues in other disciplines.
  • Build core screens for the Toss app across domains including remittances, lending, authentication, payments, commerce, and advertising.
  • Address native Android technical challenges at scale, including memory optimization, rendering speed improvements, and build systems spanning hundreds of modules.
  • Design shared platforms and core technologies, including TDS, used across Toss affiliates.
  • Use the Toss Design System to build service user interfaces and focus on core logic.
  • Release new features weekly to a large user base.

Desired Qualifications

  • Kotlin.
  • RxJava.
  • Kotlin Coroutines.
  • View System.
  • Jetpack Compose.
  • TDS (Toss Design System).
  • Model-View-Whatever.

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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