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Senior Security Engineer (Penetration Tester)

Seoul💼 Full-time🗓 2026-08-31 → 2026-09-26

Core

Red Team member conducting offensive security operations to identify and analyze vulnerabilities in web, mobile, API, and network systems.

Role type

Senior IC penetration tester (Red Team)

Builds

Security controls and threat simulations for Coupang's e-commerce platform

Domain

E-commerce / Cybersecurity

Deliverable

production ML models | product features | dashboards & analysis | research | client delivery | infrastructure | physical/clinical work

Required skills

Penetration testing, vulnerability analysis, threat simulation, Linux command-line usage, network security (TCP/IP), Python or Java scripting, Burp Suite, Metasploit, Nmap, Kali Linux

Preferred skills

E-commerce domain experience, cloud environment experience (AWS), Cyber Kill Chain and MITRE ATT&CK framework knowledge, Offensive Security certifications (OSCP, OSCE, OSED, CREST, SANS)

Technologies

Burp Suite, Metasploit, Kali Linux, Nmap, Python, Java, AWS

Responsibilities

Perform penetration testing on web, mobile, API, and network systems; Provide remediation guidance for identified vulnerabilities; Execute Red Team campaign threat simulations

Seniority

Senior, hands-on IC

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