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Backend Developer building enterprise .NET Core microservices, scalable APIs, and distributed systems using C#, SQL Server, and message brokers like RabbitMQ and Kafka for an IT consulting firm.
Designs and operates scalable data pipelines (ingestion, streaming, batch) for real-time user behavior analytics, enabling targeting, recommendations, and performance tracking in a fintech platform. Core techs: Spark, Kafka, Flink, Airflow, and distributed storage (HBase, Cassandra).
Build and refine CI/CD pipelines and Kubernetes-based infrastructure for Toss Securities, focusing on developer experience and robust monitoring to enable rapid, safe deployments.
Build and maintain Kubernetes-based cloud-native platforms to enable fast, safe deployments and resilient operations for Toss’s offline payment ecosystem.
Build and maintain cloud-native infrastructure on AWS EKS to enable fast, secure deployments for insurance products using Kubernetes, Terraform, and observability tools.
Build and improve a community-feed recommendation system for a stock-trading app used by 4 million monthly active users, using Python, PyTorch, and cloud-native serving stacks.
Build and maintain Node.js-based automation platforms at a fintech securities company, using TypeScript, NestJS, and distributed systems tools to streamline customer and internal services.
Build and maintain Node.js/Nest.js backend services and automation tools to streamline TossPlace’s terminal lifecycle and logistics operations using TypeScript, MySQL, and React.
Develops and maintains core insurance CRM, ERP, and CMS systems for agents, focusing on automation, security, and scalability using Kotlin/Java and Spring Boot.
Builds and maintains scalable backend services powering Toss’s fintech products like payments, loans, and ads using Kotlin/Spring, MySQL, Kafka, and Redis.
Develops and maintains payment systems, focusing on scalability and reliability. Core technologies include Java, Kotlin, Spring, Redis, Kafka, and MySQL.
📢 지원자 모두에게 코딩테스트 전형의 기회가 주어져요 오직 토스페이먼츠에서만 할 수 있는 경험 “시행착오를 줄여주는 동료들과 함께 나의 가능성을 새롭게 발견해요” 토스페이먼츠를 활용하는 여러 가맹점에 영향을 미치는, 20년 이상의 장기적인 수명을 가진 제품을 만들어요. 이전 기술의 히스토리를 모두 파악하고 이를 토대로 개선 방안을 찾는, 높은 복잡도와 난이도를 가진 업무들을 경험할 수…
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.
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.
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.
Develops and optimizes high-performance real-time trading platforms (e.g., stock market data feeds) for Toss Securities, designing scalable architectures for APIs/WebSockets, low-latency event processing, and inter-institution communication using Go, Kotlin/Spring, and Kafka.
Build and maintain the core server platform for Toss’s fintech services using Java/Kotlin and Spring, focusing on scalability, monitoring, and distributed systems.
Builds and operates high-availability platform services for Toss Bank, including messaging, API gateways, monitoring, and caching, using Kotlin/Java and Spring ecosystems.
Builds shared backend services and frameworks in Java/Kotlin with Spring to help teams launch and scale securities services efficiently.
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.
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