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Fastly

Edge cloud platform delivering fast content

Threat Detection Analyst - Japanese Speaking

Security Operations & Incident ResponseUpdated on Nov 11
Full-timeTokyo, JapanNo salary listed

About the Job

Requirements

  • Comprehensive understanding of the OWASP Top 10 and advanced web attack vectors, including credential stuffing, API abuse, and Layer 7 DDoS, with the ability to interpret raw payloads and distinguish malicious intent from legitimate traffic.
  • Deep technical knowledge of HTTP/S, TCP/IP, DNS, and TLS, including handshake processes, header structures, and status codes.
  • A methodical approach to digital forensics and incident response.
  • Ability to correlate data points in JSON or CSV logs to reconstruct an attack narrative.
  • Ability to communicate complex technical findings clearly to technical and non-technical audiences.
  • Availability during core business hours, Tuesday through Saturday during Japan business hours.

Responsibilities

  • Lead identification and mitigation of high-impact security events by analyzing traffic patterns and implementing countermeasures, including rate limiting and custom Web Application Firewall and security rules.
  • Serve as a primary security consultant for Managed Security Service customers, continuously tuning and refining security policies to optimize detection accuracy and maintain a hardened security posture tailored to each client.
  • Conduct data-driven threat investigations using log analysis to uncover potential threats and security-hardening opportunities.
  • Author After Action Reports and monthly security summaries, translating telemetry and attack data into actionable insights for customer stakeholders.
  • Act as the subject matter expert during active security incidents and provide clear guidance through real-time communication channels.

Desired Qualifications

  • Proficiency in Python or Bash for log parsing and workflow automation.
  • Experience with Infrastructure as Code or Security as Code, including Terraform, or edge-based configurations.
  • Industry-standard certifications such as CompTIA CySA+, GCIH, or Security+.

About the Company

Fastly

Edge cloud platform delivering fast content

Fastly provides edge cloud computing services that process data and run application logic at points near users to speed up online experiences. Its platform lets customers deploy code at the network edge with Edge Compute Language, manage features through APIs, and secure and accelerate content delivery. The company differentiates itself with a programmable edge, developer-focused tools, a global edge network, and a usage-based pricing model. Its goal is to help businesses deliver fast, secure web experiences by moving computing and content closer to end users.

Company size
1,001-5,000
Company stage
IPO
Headquarters
San Francisco, CA
Founded
2011

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