Senior Staff Backend Engineer

We exist to wow our customers. We know we’re doing the right thing when we hear our customers say, “How did we ever live without Coupang?” Born out of an obsession to make shopping, eating, and living easier than ever, we’re collectively disrupting the multi-billion-dollar e-commerce industry from the ground up. We are one of the fastest-growing e-commerce companies that established an unparalleled reputation for being a dominant 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 tradeoffs. Join Coupang now to create an epic experience in this always-on, high-tech, and hyper-connected world.  

 Role Overview 

 The Service Frameworks team is an integral part of the eCommerce Engineering Platform Services organization and is responsible for building systems, services and frameworks that are leveraged across the entire company. Since the platforms we build are key to the success of a broad set of backend engineering teams, we focus on systems that provide high availability (5 '9s) and extremely low latency. We are also pioneering efforts related to enhancing developer productivity using AI.  

 We are looking for a Senior Staff software engineer who is highly motivated and experienced in building state-of-the-art solutions that deliver business value.  

 What You Will Do 

• Deliver products that accelerate velocity and deliver business value using state of the art AI technologies (agentic frameworks, MCP) 

• Do more with less. Have a keen eye for optimization and systemic improvements across the development lifecycle 

• Design and build backend distributed systems and SDKs that can be leveraged across multiple backend systems and teams 

• Collaborate with technical leaders across the organization to arrive at innovative and optimal design choices to solve business needs 

• Be obsessed with Reliability. Take pride in delivering complex changes incrementally with long-term value and sustainability 

• Demonstrate excellence resulting in scalable systems and services with the highest quality architecture and design 

• Dive deep into critical system issues, proactively addressing similar root causes, and raise the bar on Operational Excellence 

• Disseminate knowledge and technical expertise to a wide range of stakeholders across the company 

Minimum Qualifications 

• Bachelor's degree in computer science, Electrical Engineering, Math, or a closely related field 

• Minimum 8 years of experience in backend software development  

• Proficiency in Java and the Spring Framework 

• Experience working in cloud environments, particularly AWS 

• Demonstrated experience in building and maintaining highly available, distributed systems 

Preferred Qualifications 

• Experience in server-side web app frameworks such as Spring Boot 

• Experience with shift left methodologies focusing on high quality and faster time to market 

• Deep understanding of modern web application architectures and design patterns that lead to high performance and scale