Staff Web Security Engineer

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Staff Web Security Engineer in USA new

Coupang
Full time
Email

USA
10/16/2026
Report

Seattle, WA

Responsibilities

Design, deploy, and manage security controls for externally facing web and API services.
Analyze and tune WAF detections, deploy security policies, reduce false positives and negatives, and respond to emerging vulnerabilities and CVEs.
Detect and mitigate malicious bot activity and improve bot defense capabilities.
Monitor, analyze, and optimize controls against DDoS attacks.
Conduct proactive web threat hunting and improve preventive controls.
Develop operational procedures, documentation, automation workflows, detection logic, playbooks, and response procedures.
Analyze API security events and improve investigation and response workflows.
Perform large-scale analysis of SIEM data, security telemetry, and web access logs to investigate incidents and produce security insights.
Partner with engineering, infrastructure, and security teams on incident investigations and cross-functional security initiatives.

Requirements

Bachelor’s degree in Computer Science or a related field, or equivalent practical experience.
At least 4 years of experience in security engineering or cybersecurity.
Experience analyzing security telemetry, access logs, and detection events and driving remediation.
Hands-on experience securing large-scale web environments, including DNS, DDoS mitigation, web application attacks, bot management, vulnerability response, and security investigations.
Experience with Web Security CDN, WAF, Bot Management, or DDoS protection platforms in production.
Experience analyzing large datasets with SQL and security analytics platforms such as SIEM solutions, AWS Athena, Splunk, or Elastic.
Programming or scripting experience with one or more languages such as Python, JavaScript, Go, or Bash.
Experience investigating and responding to web security incidents in large-scale e-commerce, technology, or internet-facing environments.
Understanding of web application security principles, common attack techniques, OWASP Top 10, and MITRE ATT&CK.
Experience developing security automation, operational workflows, detection logic, playbooks, or response procedures.
Strong communication, stakeholder management, collaboration, and data-driven security communication skills.
Cybersecurity certifications such as CISSP, GIAC, GSEC, GCIH, GCIA, Security+, or equivalent are preferred.
International travel capability and Korean language proficiency are preferred or advantageous.

Benefits

Medical, dental, vision, life, AD&D, disability, FSA, HSA, and EAP benefits.
401(k) plan with company match.
Paid time off, paid holidays, and paid parental leave.
Pre-tax commuter benefits and free electric car charging station access.
Annual bonus and other compensation may be available in addition to base salary.

Salary: $138k - $297k/yr

Coupang

Coupang is a technology and Fortune 150 company listed on the New York Stock Exchange (NYSE: CPNG) that provides retail, restaurant delivery, video streaming, and fintech services to customers around the world under brands that include Coupang, Eats, Play, Rocket Now, and Farfetch.

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