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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 taking action to address and improve security outcomes.
  • At least 5 years of experience building security monitoring systems and performing incident analysis and response.
  • Experience designing, operating, and improving anomaly detection based on endpoint detection and response (EDR), network, and system logs is desirable.
  • Experience with detection and response in cloud environments such as AWS.
  • Experience automating security threat detection and response work or improving its efficiency using large language models (LLMs).

Responsibilities

  • Collect diverse security logs in cloud environments using security information and event management (SIEM), and design threat scenarios and establish and operate detection rules.
  • Monitor security events and detect anomalous behavior to identify security threats to customer-facing services and employee work environments.
  • Detect, analyze, and respond to security incidents, and design and improve response processes from the ground up.
  • Use threat intelligence for threat hunting to proactively address new threats and attack vectors, including external threats and data exfiltration; share threat intelligence and detection expertise with security engineers across the affiliated companies.
  • Automate event analysis and incident investigation and response, and continuously improve detection quality to reduce false positives.
  • Build a security monitoring environment suited to Toss Place.

Desired Qualifications

  • Interest in building and advancing security monitoring and response systems, not only operating an already-completed system.

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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