Staff Backend Engineer, Marketplace Tech

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Please make sure to apply with your Coupang e-mail address.  

  

 

Company Introduction  

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. 

  

Marketplace Growth Engineering is responsible for building scalable, high-performance backend systems to ensure the success of 3rd party sellers at Coupang. Our mission is to empower sellers by providing robust tools, services, and data platforms that enable them to thrive. We focus on designing intelligent, scalable, and automated systems that enhance the seller experience, improve product listings, and drive business growth.
The team’s work encompasses three primary areas:

1. Collaborating with search and ranking teams to expose features that enhance sellers' visibility and position in search results. 
2. Developing backend services to enhance product listing quality through advanced data processing and analysis of inputs like product images and customer reviews. 
3. Building tools and analytics to help sellers identify opportunities to improve item performance and maximize success.

The ideal candidate is a backend engineering expert with extensive experience in building scalable data systems, excellent problem-solving skills, and the ability to own and drive impactful projects from inception to delivery.

What You Will Do:

• Design, develop, and automate large-scale, high-performance streaming data processing systems to drive business growth and enhance product experiences. 
• Build scalable data infrastructure and pipelines using best-in-class software engineering practices. 
• Develop optimal data models for storage and retrieval, meeting critical product and business requirements. 
• Take full ownership of projects, ensuring high-quality development and operational health. 
• Establish and execute short- and long-term architectural roadmaps to meet evolving business needs. 
• Drive continuous improvements in data platform efficiency, flexibility, and scalability, while maintaining customer trust, performance, and availability. 
• Contribute to shared data engineering tools and standards to enhance productivity and quality across Growth Engineering and Coupang as a whole. 
• Functionally decompose complex problems into straightforward, maintainable solutions. 
• Provide technical leadership across teams, sharing expertise to increase overall productivity and drive technical excellence. 

Basic Qualifications:

• 10+ years of professional software development experience. 
• 5+ years of experience building data-related products with proficiency in Spark, Flink, Spring, and Java. 
• Strong expertise in open-source frameworks and technologies, including Spring, AWS, APIs, NoSQL, and Big Data technologies such as Kafka, Elasticsearch, Iceberg, and ClickHouse. 
• Hands-on experience with Python. 
• Exceptional coding skills, with a focus on