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Toss

Fintech super-app for payments and banking

Systems Engineer

System AdministrationConfirmed live in the last 24 hours
Full-timeSeoul, South KoreaNo salary listedIn-person

About the Job

Requirements

  • Hands-on experience building and operating Linux-based systems, with a deep understanding of systems.
  • Understanding of Linux processes, memory, filesystems, and network behavior, and ability to diagnose and resolve issues logically using logs and metrics.
  • Ability to create operational tools or automate repetitive work using scripting or programming languages such as Shell, Python, or Go.
  • Understanding of key components of public cloud platforms, including AWS, and ability to design and operate infrastructure architectures suited to service requirements.
  • Ability to use new technologies and tools while independently validating results and applying them to improve systems and work.

Responsibilities

  • Design, build, and operate infrastructure needed for service operations, including servers, operating systems, SAN, storage, backups, and applications.
  • Analyze new service requirements and expected workloads; assess required infrastructure resources and participate in capacity planning, provisioning, allocation, and service integration.
  • Build and operate on-premises GPU clusters.
  • Manage the availability, performance, capacity, and security of on-premises and public cloud infrastructure, and scale it as services grow.
  • Analyze incidents and performance issues across Linux and infrastructure components, identify root causes, and improve architecture and operations to prevent recurrence.
  • Analyze application events and system logs, identify vulnerable configurations and operational risks, and improve them.
  • Standardize and automate repetitive tasks such as system deployment, configuration, inspection, and change management using scripts and automation tools.
  • Use AI tools to create operational scripts and tools, verify their accuracy and stability, and deploy them in production environments.

Desired Qualifications

  • Experience using AI tools to improve infrastructure build and operations, streamline repetitive work or problem solving, and increase production efficiency.
  • Experience building or operating automated system deployment and configuration management environments.
  • Experience managing infrastructure configuration and changes as code using Infrastructure as Code or Configuration Management.
  • Experience designing or operating infrastructure for services with large-scale traffic or high availability requirements.

About the Company

Toss

Fintech super-app for payments and banking

Toss is a South Korean financial services platform that started as a peer-to-peer money transfer service and has grown into a digital 'super app' for personal finance. Its products are accessed through one mobile interface that unifies bank accounts, credit cards, loans, investments, and other financial services, including its own Toss Bank and Toss Securities. It differentiates itself by offering a broad, integrated ecosystem—combining digital banking, asset management, and brokerage services under one roof and running its own banking and securities units. Its goal is to become the leading consumer finance platform in South Korea while expanding its user base globally.

Company size
1,001-5,000
Company stage
Series G
Total funding
$1.5B
Headquarters
Seoul, South Korea
Founded
2011

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