Toss jobs

Toss Bank Infrastructure Operations Engineer in Seoul. Role involves Linux/x86 server operations, SAN/NAS storage, monitoring (Zabbix/Grafana), backup, compliance. Requires 3+ years infrastructure ops experience. Specialization in infrastructure operations (not product engineering) combined with Seoul location disqualifies.

Server Developer position for Toss's Financial Marketplace domain in Seoul. The role involves designing and operating financial services (loans, cards, insurance, accounts) with focus on scalability, stability, high-traffic real-time systems, and AI-driven automation. Requires experience with high-availability systems, real-time data processing (e.g., Flink), and financial domain knowledge. Tech stack: Kotlin, Spring, MySQL, MongoDB, Hadoop, Redis, Kafka. Minimum 1 year experience required.

Server Developer (Market Platform) at Toss Securities building market data platform handling real-time stock quotes and high-throughput trading systems. Seoul-based, uses Go/Kotlin/Spring, Redis, Kafka; focuses on low-latency event processing and mission-critical systems.

Server Developer (Lending) at Toss Bank covering loan origination, underwriting, pricing, and servicing domains. Seoul-based, migrating from monolithic MDD/Java to Kotlin/Spring MSA; requires finance domain expertise, transaction handling, policy-based logic, and regulatory knowledge.

Anti-Fraud Manager at Toss Bank (South Korea) focused on fraud risk prevention in non-face-to-face lending. Core responsibilities include fraud trend analysis and rule improvement, fraud investigation and case prevention, loan review for suspected fraud, and external investigation coordination. Role requires financial services fraud experience, non-face-to-face risk awareness, and analytical tools proficiency (SAS, Python).