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Senior Staff Back-end Engineer (eCommerce Platform Servic... | Freelanly

Senior Staff Back-end Engineer (eCommerce Platform Services) at Coupanginternal

Coupanginternal

Seoul, South Korea·1d ago

SeniorFull-timeJavaSpringAWSKubernetesMicroservicesAPI

Salary Range

$132,600 - $179,400 /year

Estimated

This salary is estimated based on similar roles. The actual salary may vary.

About the Role

We are looking for a Senior Staff Backend Engineer to join Coupang's Platform Services team. This role involves shaping the technical strategy and architecture of the AuthN & AuthZ platform, building infrastructure for access control and monitoring, and mentoring senior engineers.

Key Responsibilities

→Drive Technology Vision & Roadmap: Define and champion a 12–18 month platform strategy
→Architectural Authority: Provide thought leadership in designing AuthN and AuthZ architectures
→Lead Complex System Design: Oversee architecture ensuring backward compatibility and data integrity
→Operational Excellence & Reliability: Set and uphold SLOs and error budgets
→Security, Compliance & Cost Optimization: Ensure privacy and regulatory compliance
→Hands-on Contribution: Perform high-impact code reviews and performance optimizations
→Cross-Functional Influence: Partner with PMs and teams across various departments
→Mentorship & Bar Raising: Coach Senior and Staff level engineers

Requirements

✓10+ years of professional backend development experience
✓7+ years of experience in Java/Kotlin/Spring-based service development
✓3+ years in architecture leadership
✓Experience designing and operating web-scale microservices
✓Hands-on experience with AWS and Kubernetes
✓Deep expertise in diagnosing mission-critical system failures
✓Strong communication and leadership skills
✓Summary Bullets
✓Shape technical strategy and architecture of AuthN & AuthZ platform
✓Build infrastructure for access control and monitoring
✓Mentor senior engineers to raise technical standards
✓Design highly reliable and scalable systems
✓Collaborate with cross-functional teams
✓Ensure security and compliance
✓Perform code reviews and performance optimizations
✓Requirement Bullets
✓10+ years backend development experience
✓7+ years Java/Kotlin/Spring development
✓3+ years architecture leadership
✓Web-scale microservices experience
✓AWS and Kubernetes experience
✓System failure diagnosis expertise
✓Strong communication and leadership skills
✓Benefit Bullets
✓[]

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About Coupanginternal

Coupanginternal operates as an internal technology and innovation division within the Coupang ecosystem, focusing on developing proprietary solutions to enhance the e-commerce and logistics infrastructure of the parent company. Leveraging Coupang's extensive resources and expertise, this division was likely established in South Korea, where Coupang is headquartered, to drive technological advancements that support the platform's rapid growth and operational efficiency. As part of a leading e-commerce giant, Coupanginternal plays a critical role in maintaining and improving the technological backbone that powers Coupang's customer-centric services. The division specializes in creating and refining internal tools, software systems, and automation technologies tailored to streamline Coupang's logistics, delivery, and customer service operations. Key features of their work include advanced data analytics for demand forecasting, AI-driven inventory management, and innovative delivery algorithms that optimize speed and reliability. Their solutions are designed for internal use within Coupang, serving the needs of logistics centers, delivery teams, and customer support staff to ensure seamless operations. The target audience is primarily Coupang's internal teams, though the technologies developed may indirectly benefit millions of Coupang customers through improved service quality. Coupanginternal has contributed significantly to Coupang's market leadership by enabling the company to maintain its reputation for ultra-fast delivery and operational excellence. While specific achievements may not be publicly disclosed, the division's work is integral to Coupang's ability to scale efficiently and compete in the highly demanding e-commerce landscape. Its unique value proposition lies in its deep integration with Coupang's core business, allowing it to address challenges with bespoke, high-impact solutions that generic third-party technologies cannot replicate.

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