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Toss Payments(토스페이먼츠) Tech Stack

Payment processing platform serving Korean merchants and consumers

IT Services and IT Consulting Seoul, 서울 강남구 51–200 employees Founded 2020 Privately Held

Toss Payments operates a payment infrastructure business built on Java/Spring/Kafka with Oracle and SAP underpinning settlement and ERP functions. The company is actively hiring across sales (11 roles), engineering (8), and ops (7), with projects focused on settlement system redesign, legacy payment system modernization, and merchant operations automation — reflecting a business scaling transaction volume while addressing technical debt and process fragmentation.

Tech Stack 52 technologies

Core StackSAP Oracle Salesforce Playwright TypeScript Node.js JavaScript Kotlin Jira Slack Grafana Postman Java MySQL Redis Elasticsearch Kafka PayPal Alipay Google Notion Kibana Gradle Spring MVC Spring WebFlux Spring Batch JPA Spring Cloud Gateway Spring Cloud Config Netty+22 more

What Toss Payments(토스페이먼츠) Is Building

◆Challenges

Increasing merchant acquisition
Process inefficiencies across systems
Ensuring high-performance settlement
Technical debt reduction
Legacy system modernization
Streamlining merchant operations
Replatforming legacy payment system
Scaling payment traffic
K-ifrs transition
Evaluating merchant financial health

▲Active Projects

Settlement system improvement
Openapi ecosystem
Salesforce environment build
Information security policy and strategy development
Data-driven gtm strategy development
Pg village payment operation and enhancement
Merchant product development
Payment system foundation redesign
Merchant risk portfolio management
Sales operations automation system

Hiring Activity

Accelerating45 roles · 25 in 30d

Department

Sales

11

Engineering

8

Ops

7

Legal

4

Product

4

Finance

3

Security

3

HR

2

Seniority

Manager

16

Junior

12

Mid

8

Senior

6

Lead

4

C-Level

1

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About Toss Payments(토스페이먼츠)

Toss Payments is a payment processor founded in August 2020 that handles online and mobile commerce transactions in South Korea. The platform serves merchants and consumers, offering payment services alongside risk management and merchant onboarding capabilities. The company operates a settlement and clearing infrastructure, with active work on API ecosystems, merchant product development, and payment system architecture modernization. Hiring is concentrated in South Korea across sales, engineering, operations, and leadership roles.

HeadquartersSeoul, 서울 강남구

Company Size51–200 employees

Founded2020

Hiring MarketsSouth Korea

Frequently Asked Questions

What tech stack does Toss Payments use?

Java, Spring MVC, Spring WebFlux, Spring Batch, Kafka, MySQL, Redis, Elasticsearch, Oracle, SAP, PayPal, Alipay, Salesforce, Jira, Grafana, Postman, and Kibana.

What is Toss Payments working on?

Settlement system redesign, OpenAPI ecosystem development, legacy payment system replatforming, merchant risk management, sales operations automation, and Salesforce environment deployment.