Senior Staff Backend Engineer (Kubernetes Development)

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. Role Overview : The Senior Staff Engineer (Kubernetes) is responsible for designing, building, and optimizing our most critical, large-scale, and highly available systems using Go (Golang) and Kubernetes. This role drives architectural strategy, mentors senior engineering staff, and sets the technical direction for cloud-native adoption and maturity across the organization. What You Will Do : System Architecture Strategy: Define and evangelize the technical roadmap and long-term architecture for our core cloud-native platforms and services. Ensure all solutions adhere to best practices for reliability, performance, and security. High-Performance Golang Development: Design, write, test, and deploy production-ready code in Golang for critical components, APIs, and business logic, prioritizing low latency and high throughput. Kubernetes Platform Leadership: Lead the development and maintenance of our internal Kubernetes platform. This includes extending the platform using Custom Resource Definitions (CRDs) and Operators to automate infrastructure management. Operational Excellence: Establish and enforce standards for observability, monitoring, alerting, and logging using Prometheus, Grafana, and related toolchains. Lead efforts to improve system reliability, disaster recovery, and overall operational efficiency. Mentorship and Coaching: Act as a technical mentor to senior and mid-level engineers, raising the engineering bar across the organization through design reviews, code reviews, and deep technical training. Cross-Functional Collaboration: Partner closely with Security, DevOps, and Product teams to translate complex business requirements into robust, scalable technical designs and implementation plans. Troubleshooting: Serve as the final escalation point for production issues, performing deep-dive root cause analysis (RCA) on performance and stability problems within the Kubernetes/Golang stack. Basic Qualifications: At least 13 years of progressive experience in software engineering, with a significant focus on cloud-native application development and infrastructure. Golang Expertise: Deep, hands-on experience in designing, developing, and deploying high-performance, scalable microservices and distributed systems using Golang. Must be proficient with Go concurrency patterns (goroutines, channels) and best practices for writing clean, testable, and robust Go code. Cloud Platforms: Extensive experience with at least one major public cloud provider (AWS, GCP, or Azure). Architecture Design: Proven ability to define and implement complex microservices architectures, considering factors like fault tolerance, security, scalability, and cost efficiency. DevOps Auto ... (truncated, view full listing at source)