Sr. Staff Backend Software Engineer

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 entrepreneurial 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.

Job Overview:

Coupang relies on technology to provide on-time, fast delivery of products to customers every day. Fulfillment Technology focuses on managing highly scalable systems for Coupang that includes Inventory and Warehouse Management systems. Building highly available and scalable systems to handle billions of order & delivery transactions and support Coupang’s rapidly growing Product Commerce business is a complex architectural challenge. We are responsible for delivering products to millions of online shopping customers by improving order reconciliation with technology. To deliver on this challenge, we are looking for an experienced and passionate engineer who can design and build large-scale, multi-tiered, distributed services.

Key Responsibilities:

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

Responsible for designing, building, deploying and maintaining the core Workflow Platform Infrastructure. (e.g., Workflow Platforms - Temporal, Netflix Conductor etc.)

Responsible for benchmarking the Platform, collecting metrics & publishing results.

Responsible for measuring & ensuring reliability and uptime of the Platform with 99.995% guarantees.

Responsible for capacity estimation & provisioning of cluster for different customer workloads.

Responsible for production incident Monitoring & Alerting for the Platform.

Detail oriented and hands on engineer who can analyze OSS Platform components and code.

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

Exposure to one of the SQL or NoSQL database systems. (Cassandra, MySQL etc.)

Collaborate with other teams to make the platform open and extensible to unlock innumerable opportunities for innovations.

Minimum Qualifications:

Bachelor's degree in Computer Science, Electrical Engineering, Math, or a closely related field

8 years of experience in backend software development

Experience working in cloud environments, particularly AWS

Demonstrated experience in building and maintaining highly available, distributed systems

Preferred Qualifications:

10 years of experience working directly within engineering teams in a fast-moving environment.

10 years of experience in developing and operating backend services and web applications.

Experience building complex, high-performance, and highly available distributed software systems that have been successfully delivered to customers.

Strong familiarity developing with Java and Spring Framework as well as experience in an AWS environment.

Extensive experience in managing mission critical serv