Staff, Security Engineer (Authentication & Access) [L6-2] (Ads, Marketing, Sales and CX Security Architecture)

About this role

본 공고는 재직 임직원을 대상으로 하는 사내 공모 전용입니다. (임직원 추천은 Link로 진행)

This posting is exclusively for internal employees. (Employee referrals are submitted via the Link)

지원 시에는 반드시 첨부된 ‘사내 공모 지원서 양식’을 작성한 후, 쿠팡 이메일 계정으로 접수해 주시기 바랍니다.

To apply, please complete the attached ‘Internal Transfer Request Form’ and submit it via your Coupang email address.

• 사내 공모 정책: [Link]

• Internal Transfer Policy: [Link]

Company Introduction

We exist to wow our customers. We know we’re doing the right thing when we hear our customers say, “How did I ever live without Coupang?” Born out of an obsession to make shopping, eating, and living easier than ever, we are collectively disrupting the multi-billion-dollar commerce industry from the ground up and establishing an unparalleled reputation for being leading and reliable force in South Korean commerce.

We are proud to have the best of both worlds — a startup culture with the resources of a large global public company. This fuels us to continue our growth and launch new services at the speed we have been since our inception. We are all entrepreneurs surrounded by opportunities to drive new initiatives and innovations. At our core, we are bold and ambitious people that like to get our hands dirty and make a hands-on impact. At Coupang, you will see yourself, your colleagues, your team, and the company grow every day.

Our mission to build the future of commerce is real. We push the boundaries of what’s possible to solve problems and break traditional trade-offs. Join Coupang now to create an epic experience in this always-on, high-tech, and hyper-connected world.

Role Overview

Coupang is seeking a highly skilled Security Architect to help design, build, and scale secure enterprise platforms and services that protect our business systems, infrastructure, and internal applications.

As a Security Architect, you will work closely with engineering, platform, and security teams to design secure solutions across identity and access management, authentication, authorization, credential management, cryptography, and data protection domains. You will provide technical leadership within your area of expertise while remaining hands-on in architecture design, software development, security automation, and platform engineering.

This role is ideal for experienced security professionals who enjoy solving complex technical challenges, building scalable security platforms, and enabling engineering teams to deliver secure-by-design systems in a fast-growing technology environment.

What You Will Do

• Design and implement security architectures for enterprise platforms, services, and large-scale distributed systems.

• Partner with software engineering, infrastructure, and platform teams to integrate security requirements into system design and development processes.

• Develop secure solutions across identity and access management (IAM), authentication, authorization, credential management, cryptography, and data protection domains.

• Design and improve authentication and authorization services using modern identity standards such as OAuth 2.0, OpenID Connect (OIDC), and federation technologies.

• Build and automate security controls, tooling, and services using software engineering best practices with a strong focus on scalability, reliability, and operational efficiency.

• Review system architectures and provide security guidance to engineering teams throughout the software development lifecycle.

• Contribute to the design and evolution of enterprise IAM platforms, access control frameworks, and credential management systems.

• Establish and promote security best practices related to secure system design, cryptography, secrets management, and access governance.

• Identify security gaps, evaluate technical risks, and recommend practical solutions that balance security, business needs, and engineering productivity.

• Develop prototypes, proof-of-concepts, and security automation solutions primarily using Python and related technologies.

• Collaborate with cross-functional stakeholders to continuously improve Coupang's overall security posture and operational maturity.

Basic Qualifications

• Bachelor's degree in Computer Science, Computer Engineering, Cybersecurity, or a related technical field.

• 10+ years of experience in security engineering, security architecture, platform engineering, software engineering, or related technical disciplines.

• Strong expertise in at least one or more of the following domains:

• Identity and Access Management (IAM)

• Authentication and Authorization

• OAuth 2.0, OpenID Connect (OIDC), Federation

• Applied Cryptography and Key Management

• Credential and Secrets Management

• Public Key Infrastructure (PKI)

• Security Policy and Access Control Frameworks

• Strong understanding of secure architecture principles for cloud-native and distributed systems.

• Hands-on software development experience with Python and security automation.

• Experience designing, implementing, or supporting enterprise security platforms and services.

• Ability to analyze complex technical problems and deliver practical, scalable solutions.

• Strong written and verbal communication skills and the ability to collaborate effectively across engineering organizations.

Preferred Qualifications

• Experience building or operating enterprise-scale IAM, Identity Governance, Access Management, or Zero Trust solutions.

• Experience designing security architectures for cloud environments such as AWS, GCP, or Azure.

• Knowledge of modern secrets management, credential lifecycle management, and privileged access management solutions.

• Experience with PKI design, certificate management, or cryptographic service platforms.

• Experience developing security platforms, internal developer tooling, or security automation frameworks.

• Understanding of threat modeling, security monitoring, intrusion detection, or incident response concepts.

• Experience working in…