Staff, Security Software Engineer - Coupang Play

What You Will Do Lead security initiatives and drive continuous improvement in our security posture to protect our critical assets and data from evolving threats. Subject matter expert for our security technologies, ensuring security is embedded into all phases of our software development lifecycle. Develop and maintain security-focused libraries, tools, and automation scripts to enforce security standards across services. Collaborate with engineering teams to implement secure-by-design principles in code, APIs, and infrastructure. Contribute to code reviews with a focus on identifying and remediating security vulnerabilities. Actively partner with software , platform engineers , and Coupang Infosec to define, document, and enforce security policies, standards, and procedures. Drive adoption of security best practices through hands-on implementation and mentorship. Conduct security threat modeling for new and existing applications. Evaluate, recommend, and implement security and governance tools. Lead penetration testing and vulnerability assessments. Act as a lead responder for security incidents, performing detailed analysis and forensic investigations. Basic Qualifications Bachelor's or master's degree in computer science, Information Security, or a related field, or equivalent practical experience Strong software engineering skills with experience in building secure applications and services Ability to write, review, and optimize code with security in mind (e.g., secure coding patterns, input validation, encryption) Strong understanding of cryptography, PKI, secure authentication protocols, and authN/authZ in microservices environment Expertise in network security (e.g., firewalls, VPNs, WAFs, micro-segmentation) Expertise in security guardrails and tools integration into daily design/coding tasks and CI/CD pipelines Proficient in securing services operating in a major cloud provider (AWS, Azure, or GCP) Proficiency in at least one scripting language (Python or Bash) and one general-purpose programming language (Go or Java) for automation and tool development Exceptional written and verbal communication skills, with the ability to articulate complex security risks to technical and non-technical audiences Proven ability to lead projects, manage priorities, and meet deadlines Preferred Qualifications Experience contributing to open-source security tools or frameworks Ability to speak and write in English in a professional environment AWS Certified Security – Specialty or equivalent from Azure/GCP Recruitment Process and Others Recruitment Process Application Review - 1st Interview - 2nd Tech Interview - Leadership interview – Offer The exact nature of the recruitment process may vary according to the specific job and may be changed due to scheduling or other circumstances. Interview schedules and the results will be informed to the applicant via the e-mail address submitted at the application stage. Details to Consider This job posting may be closed prior to the stated end date for application if all openings are filled. Coupang will be prioritizing applicants who have a current right to work in Singapore and do not require company sponsorship for an employment visa. Coupang has the right to rescind an offer of employment if a candidate is found to have submitted false information as part of the application process. Those eligible for employment protection (recipients of veteran’s benefits, the disabled, etc.) may receive preferential treatment for employment in accordance with applicable laws. Job titles and responsibilities may be subject to change depending on the candidate’s overall experience, etc. This will be communicated to the candidate at the appropriate time before the offer. Hiring may be restricted in case the legal qualifications required for hiring and work performance is not met. This is a full-time regular position and includes 12 weeks of probation period; provided, however, the probationary period may be either skipped, shortened or extended if necessary for business purposes. Privacy Notice Your personal information will be collected and managed by Coupang as stated in the Application Privacy Notice located below. https://privacy.coupang.com/en/land/jobs/