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카카오페이 (kakaopay) Tech Stack

Payment platform serving consumer and merchant transactions across Asia

IT Services and IT Consulting 성남시, 경기도 1,001–5,000 employees Founded 2017 Public Company

Kakaopay operates a consumer fintech platform handling payments, transfers, and financial products in South Korea with expanding overseas presence. The infrastructure stack (Kafka, Kubernetes, MySQL, Ceph, Prometheus) supports high-volume transaction processing; active projects around batch systems for large payment datasets and high-availability architecture signal ongoing investment in reliability at scale. Hiring velocity is accelerating with engineering-heavy roles (6 of 10 open positions), concentrated in senior and mid-level engineers — typical for a platform managing regulatory complexity and cross-border payment operations.

Tech Stack 20 technologies

Core StackLinux Python Go Ansible Terraform Java Kotlin MySQL Kafka RabbitMQ AWS Docker Kubernetes Prometheus Alipay Ceph Spring Boot Spring Framework Tempo OpenSearch

What 카카오페이 (kakaopay) Is Building

◆Challenges

Data consistency
High availability
Large-scale infrastructure migration
Reducing transaction friction
Enhancing fraud detection
Regulatory compliance for customer data
Responding to regulatory inspections
Strengthening overseas offline payment competitiveness
Expanding overseas online payment merchant acquisition
Improving incident response

▲Active Projects

Batch system for large payment data
High availability architecture
Payment service
Incident response management
Card payment platform
Building a safer customer data processing environment
Policy creation and improvement for data compliance
Collaborating with alipay on new projects
Expanding overseas partnership projects
Acquiring overseas online payment merchants

Hiring Activity

Accelerating10 roles · 5 in 30d

Department

Engineering

6

Product

2

Legal

1

Sales

1

Seniority

Senior

5

Mid

4

Manager

1

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About 카카오페이 (kakaopay)

Kakaopay is a fintech platform enabling payments, transfers, savings, and investment products for consumers in South Korea, with growing merchant and partnership operations. The company bridges everyday financial services through mobile channels, targeting friction reduction in payment workflows and financial access. Core infrastructure handles real-time transaction processing, card payments, and data pipelines serving merchant acquisition and fraud monitoring. Active projects include overseas merchant expansion, Alipay partnerships, and regulatory compliance systems — indicating a transition from domestic market consolidation toward regional payment network presence.

Headquarters성남시, 경기도

Company Size1,001–5,000 employees

Founded2017

Hiring MarketsSouth Korea

Frequently Asked Questions

What tech stack does Kakaopay use?

Core stack includes Kafka for event streaming, Kubernetes and Docker for orchestration, MySQL and Ceph for data storage, Java/Spring Boot and Python/Go for services, plus Prometheus and Tempo for observability and tracing.

What is Kakaopay working on?

Active projects include payment service infrastructure, card payment platform, high-availability architecture, batch systems for large payment data, fraud detection, overseas merchant acquisition, and Alipay partnership expansion.