Coupang - Staff Backend Engineer
Requirements
• 10–12 years of backend software engineering experience with 3+ years in engineering management • Strong experience in backend development using Java or Python with REST API design • Hands-on experience with authentication and authorization technologies (OAuth2, OIDC, SAML) • Solid understanding of identity systems including user identity and machine/workload identity • Experience with service-to-service authentication and distributed system security • Strong problem-solving and execution skills with ability to break down complex systems • Experience working in cloud environments (AWS preferred) • Strong stakeholder management and communication skills • Experience building IAM systems in cloud platforms (AWS, Azure, GCP) • Familiarity with PKI, certificate lifecycle management, and secure identity frameworks • Experience with authorization frameworks (RBAC, ABAC, OPA) • Exposure to Kubernetes and cloud-native architectures • Experience working on large-scale distributed systems handling high request volumes • Background in platform engineering or infrastructure teams • Type of work model • Type of work model • Hybrid / Onsite / Remote working • Our Hybrid work model: Coupang hybrid work model is designed to enable a culture of collaboration that acts a catalyst to enrich the experience of employees. Employees are required to work at least 3 days in the office per week, with the flexibility to work from home 2 days a week, depending on the role requirement. Some businesses may require more time in office due to nature of work. • Details to consider • Details to consider • Those eligible for employment protection (recipients of veteran’s benefits, the disabled, etc.) may receive preferential treatment for employment in accordance with applicable laws. • Your personal information will be collected and managed by Coupang as stated in the Application Privacy Notice located below. https://privacy.coupang.com/en/l and/jobs/
Responsibilities
• Lead and grow a high-performing backend engineering team focused on identity and access management • Drive development of core IAM capabilities including authentication, authorization, and identity lifecycle management • Design and build scalable systems for user identity and machine identity management within a cloud environment • Work on modern authentication protocols such as OAuth2, OIDC, and SAML, and implement secure service-to-service authentication • Build and evolve authorization frameworks leveraging RBAC/ABAC models and policy engines (e.g., OPA) • Partner with cross-functional teams to deliver secure, scalable infrastructure for AI workloads • Drive technical design, execution planning, and delivery of complex distributed systems • Ensure reliability, scalability, and security of identity systems as the platform scales rapidly • Mentor engineers and foster a strong engineering culture focused on ownership and excellence
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