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# Staff Security Engineer Penetration Tester

- **Company:** Coupang, Inc.
- **Location:** Seattle, WA, United States
- **Experience:** Expert
- **Salary:** $152,000.0 - $261,000.0
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Amazon Web Services, Software System Penetration Testing, Burp Suite, Command-Line Interface, Cloud Computing, Cyber Security, Computer Engineering, Data Centers, Linux, Python (Programming Language), Kali Linux, Nmap, Red Team (Cyber Security), TCP/IP, Mitre Att&ck, Information Technology, Metasploit, Operating System Security, Api Management, Programming Languages
- **Published:** October 27, 2026
- **Apply:** https://www.careerbuilder.com/job-details/staff-security-engineer-penetration-tester-seattle-wa--438bbf85-091e-4f61-b1e0-f23c763d3fc8

## About the Role

Penetration Testing, Security Attacks, eCommerce, Entrepreneurship, Startup, Product/Service Launch, Problem Solving Skills, Computer Security, Penetration Testing, Application Programming Interface (API), * 5+ years of technical work experience in offensive security

 * Proficiency on web, mobile and API testing
 * Experience with common penetration testing security tools (e.g., Burp Suite, Metasploit, Kali Linux, Nmap)
 * Good understanding of OS security (e.g., Linux) and networking (TCP/IP)
 * Proficiency with command-line tools and Linux
 * Confident with at least one programming language (e.g., Python, Java) in order to develop scripts and tools that could aid the testing activities., * Work experience in the e-commerce sector is valuable.
 * Experience in cloud (e.g., AWS) and understanding the differences between Cloud and traditional data-center environments.
 * Understanding of Cyber Kill Chain, MITRE ATT&CK framework
 * Computer Science, Computer Engineering, or related technical Degree
 * Holder of well-recognized offensive security certifications (e.g., Offensive Security like OSCP, OSCE or OSED, CREST, SANS)
 * Fluent in Korean and English

## Description

We are looking for a new Red Team member in our Seattle office. The ideal candidate will be passionate around security and will love to dive deep in order to understand and exploit a potential security vulnerability. If you love finding security weaknesses and use those findings to bypass technical security controls, we would love to hear from you.

What You Will Do

 * Responsibilities will include, but not be limited to, the following:
 * Perform penetration testing activities on web, mobile, API and network.
 * Provide remediation guidelines and improvements to the issues identified during the engagements
 * Perform threat actor simulation activities (Red Team campaigns)