Staff Back-end Engineering (Interstellar)

The role

This Staff Back-end Engineer II will lead projects across multiple teams and define the technical roadmap for core data serving platforms. You will design systems with clear boundaries and strong contracts to solve deep architectural problems and drive AI adoption.

What you will do

• Lead projects across multiple teams
• Define the technical roadmap for core data serving platforms
• Contribute to the group's technical strategy
• Design systems with clear boundaries, strong contracts, and comprehensive testing
• Solve deep architectural problems
• Support safe and high-quality contributions at scale
• Lead AI use cases and automation adoption within the team
• Judge trade-offs between short-term delivery and long-term platform health
• Resolve blockers for other teams
• Coach engineers on career growth and engineering fundamentals

Required qualifications

• 5+ years of backend development experience (excluding internships)
• 5+ years of Java/Kotlin/Spring based service development and architecture leadership experience
• Experience as a mentor, tech lead, or engineering team lead
• Experience defining technical vision and establishing roadmaps for mission-critical projects
• Experience with microservices architecture and scaling it to web scale
• Experience with deep dives and handling critical system issues
• Experience applying internal and industry best practices to design
• Experience collaborating with other engineering teams to create open and scalable platforms
• Practical experience using AI-assisted software engineering tools (Copilot, Claude Code, Devin, Cursor) for implementation, testing, code review, and documentation
• Experience leading the establishment and introduction of AI best practices within a team
• Measurable productivity improvement results through AI tool introduction

Nice to have

• 5+ years of Java and Python based software design and development experience
• Practical experience designing, building, and deploying scalable and highly available distributed multi-tier services
• Experience designing and developing large-scale global system architectures
• Experience defining technical roadmaps and vision
• AWS based cloud computing experience
• Kubernetes environment development experience
• Data pipeline development experience using Spark, Cassandra, Kafka, or Airflow
• Experience in Java / IntelliJ / Spring environments

Before you apply

• This posting is exclusively for internal employees
• Complete the attached Internal Transfer Request Form
• Submit via your Coupang email address

About the company

Coupang is an e-commerce company innovating the industry to make shopping, dining, and living more convenient. It possesses both startup culture and the resources of a large global listed company.