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Toss

Fintech super-app for payments and banking

Security Engineer - Event Analysis / Incident Response

Security Operations & Incident ResponseConfirmed live in the last 24 hours
Full-timeSeoul, South KoreaNo salary listedIn-person

About the Job

Requirements

  • Experience analyzing security incidents and threats and delivering practical responses and improvements.
  • Experience identifying and responding to security threats in Kubernetes and public cloud environments.
  • Experience designing, operating, and improving detection engineering capabilities.
  • Extensive experience deriving threat scenarios and responding to them using a security information and event management (SIEM) system.
  • Experience automating or improving the efficiency of security threat detection and response, including through large language models (LLMs).

Responsibilities

  • Own end-to-end security incident detection, analysis, and response.
  • Identify security threats to Toss services and design and operate threat models and scenarios using varied logs collected in the SIEM.
  • Establish, improve, and streamline security threat analysis and incident response processes, including through automation.
  • Research technical analysis and response approaches for diverse attack vectors, including external threats and data exfiltration.

Desired Qualifications

  • Provide concrete examples of personally conducting technical analysis and response for threat analysis and incident response.
  • Provide examples of improving, automating, or enhancing incident response work through personal strengths and expertise.
  • Explain specific challenges encountered during problem solving and how they were addressed.
  • Describe concrete examples of applying skills learned through technical study to work.

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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