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Toss

53 jobs

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53 jobs Posted Sort

Security Engineer

Security Engineer at Toss Securities (Seoul, on-site) who builds and operates the SIEM-based security monitoring system: collects and analyzes logs, writes correlation detection rules, automates analysis/response workflows, and investigates security incidents across customer-facing and internal environments. Core stack includes Splunk, ELK, Kafka, Kubernetes, and cloud.

Cloud ELK Kafka Kubernetes Splunk

Server Developer (Product)

Designs and develops high-availability, scalable server systems for Toss’s offline payment solutions, focusing on system architecture, real-time traffic handling, and end-to-end service reliability using Java/Kotlin, Spring, Kafka, and cloud-native tools.

Argo CD Cloud Elasticsearch Grafana Hibernate +14 skills

Server Developer (3년 이하)

합류하게 될 팀에 대해 알려드려요 Server Developer (Platform)는 서버 플랫폼팀에 속해 업무해요. 토스는 보통 작은 feature 단위의 사일로 조직으로 기획자, 디자이너, 개발자들이 소규모로 모여 서비스 제품이 만들어지는데요, 서버 플랫폼팀은 이런 사일로 조직들에서 필요로 하는 공통 기능들, 프레임워크를 만드는 팀이에요. 서버 플랫폼팀의 올해 목표는 증권 서비스들이…

Elasticsearch ELK Go Grafana Java +9 skills

Server Developer (Product) (3년 이하)

합류하게 될 팀에 대해 알려드려요 토스증권 Server 챕터에는 무언가를 함께 만들어내서, 보다 나은 가치를 만들고자 하는 동료들이 정말 많아요. 예를 들어, 아이디어를 냈을 때 "이래서 안 돼!", “이미 잘 되고 있는데 굳이 바꿔야 하는 거야?” 보다 "이렇게 하면 그걸 해낼 수 있겠다."라는 마인드를 가진 분들 말이죠. 자신의 의견을 서슴지 않게 이야기할…

Elasticsearch ELK Grafana Hibernate InfluxDB +12 skills

Server Developer (Platform)

Builds shared backend services and frameworks in Java/Kotlin with Spring to help teams launch and scale securities services efficiently.

Elasticsearch ELK Go Grafana Java +9 skills

Server Developer (Product)

Build and maintain server-side components for Toss Securities using Java/Kotlin, Spring, Redis, Kafka, and Kubernetes, focusing on high-traffic trading systems and real-time data processing.

Elasticsearch ELK Grafana Hibernate InfluxDB +12 skills

Server Developer (Product) (3년 이하)

#LI-DNI 합류하게 될 팀에 대해 알려드려요 특정 제품이나 문제 영역을 해결하는 사일로/팀에 속해 Product Owner, Product Designer, Frontend Developer, Hardware Engineer 등 다양한 직군의 동료들과 협업해요. 한 번도 달성해 본 적 없는 새로운 혁신을 만들기 위해 매일 치열한 고민을 나누고, 스스로 결정하고, 자율적으로 실행해 볼…

Argo CD Cloud Elasticsearch Grafana Hibernate +14 skills

Server Developer (User Growth)

Builds and operates high-traffic growth features in Toss’s app—like rewards, events, and analytics—using Kotlin/Spring and distributed systems to drive user growth and revenue.

Elasticsearch Hadoop Kafka Kotlin MongoDB +3 skills

100M – 150M KRW

Server Developer (Financial Marketplace)

Builds and operates scalable backend systems for a Korean fintech super-app’s financial marketplace, handling loans, cards, insurance, and accounts while integrating AI-driven automation.

AI Flink Hadoop Kafka Kotlin +4 skills

120M – 200M KRW

Server Developer (Finance Product)

# 합류하게 될 팀에 대해 알려드려요 - Finance Product Division은 토스의 서비스에서 발생하는 계약, 구매, 결제, 정산, 지급, 회계, 리스크 관리가 하나의 흐름으로 이어지도록 제품과 시스템을 만들어요. 사업이 빠르게 성장해도 돈의 흐름을 정확하게 파악하고 안전하게 운영할 수 있는 기반을 만드는 조직이에요. - Finance Product Division 에 속해…

Elasticsearch Generative AI Hadoop Kafka Kotlin +7 skills

Server Developer (Commerce)

Builds and operates core commerce systems (search, recommendations, orders, payments, ads) for Toss Shopping, a fast-growing B2C marketplace, using Kotlin/Spring and distributed data stacks.

Elasticsearch Generative AI Hadoop Kafka Kotlin +7 skills

120M – 200M KRW

Server Developer (Ads)

Builds and scales high-traffic ad-serving backends for Toss’s in-app ad platform, using Kotlin/Spring and distributed systems like Kafka and Redis.

Elasticsearch Hadoop Kafka Kotlin MongoDB +3 skills

100M – 150M KRW

Server Developer (Product)

Builds and maintains the backend for Toss’s consumer-facing apps (payments, shopping, ads, etc.) using Kotlin, Spring, and distributed systems at scale.

Hadoop Kafka Kotlin MongoDB MySQL +2 skills

Data Engineer (DataOps)

DataOps engineer in Toss Securities' Data Infra Team, operating the Elasticsearch-based log/search platform, Milvus vector search, and a data-dedicated Kubernetes deployment platform with CI/CD pipelines so data workloads ship fast while meeting financial compliance standards.

Airflow Argo CD CI/CD ClickHouse Cloud +25 skills

Data Engineer (금융데이터/재무)

Builds and maintains scalable data pipelines for financial market data, transforming raw disclosures and market feeds into structured investment insights using Python, SQL, and distributed systems.

AI Airflow API Claude Code ClickHouse +10 skills

Data Engineer (금융데이터/자문)

Builds and operates data pipelines for Toss Securities’ wealth-management advisory services, integrating partner portfolio data, customer behavior, and regulatory-grade analytics to power portfolio recommendations and content.

AI Airflow API Claude Code ClickHouse +11 skills

Data Engineer (금융데이터/AI)

Builds and maintains a global financial data platform for securities, processing real-time market data with AI/ML pipelines using Kafka, Spark, and Iceberg.

Agentic AI AI Airflow Argo CD ClickHouse +15 skills

Data Engineer (금융데이터/DRE)

Open 23d APACContract

Data Reliability Engineer at Toss Securities (Seoul) who owns the full lifecycle of financial data — disclosures, earnings, market prices, news — designing and running ingestion/validation pipelines and a data-quality platform with data contracts and lineage tracking. Core stack: Python, SQL, Airflow, Kubernetes, and distributed query engines like Spark, Impala, and ClickHouse, with LLM-based auto

AI Airflow Argo CD Claude Code ClickHouse +16 skills

Data Engineer (Realtime)

Build and optimize real-time data pipelines for Toss Securities, using Kafka, Flink, and OLAP systems to process high-volume financial transactions instantly.

ClickHouse Data Engineering Flink Java Kafka +2 skills

Data Engineer (Platform)

Data engineer on Toss Place's Data Platform Team, building and operating large-scale data infrastructure and analytics pipelines on Kubernetes/EC2 — running Kafka, StarRocks, Airflow, Spark, and Elasticsearch, and evolving a real-time analytics platform on StarRocks and Apache Iceberg.

Airflow Analytics Ansible CI/CD Data Analytics +10 skills