About Coupang: At Coupang we are building the future of ecommerce. 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 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?” 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.
About CoupangPay : Coupang Pay focuses on delivering innovative payment and financial services solutions to everyone who uses the Coupang app — from customers buying products on Coupang.com, to marketplace vendors, and restaurants that offer their services via Coupang Eats. We develop solutions with our latest tech innovations to serve the growing needs of Coupang’s customers in Korea and Taiwan. This includes Coupay, an online wallet with a proprietary one-touch payment capability.
About the role : As a Staff Site Reliability Engineer (SRE) in CoupangPay, you will play a pivotal role in ensuring the reliability, scalability, and performance of our critical systems and services. You will be a technical leader, driving the design, implementation, and optimization of complex systems that meet the demands of a high-availability environment. This role requires deep expertise in the Observability Engineering (OE) stack—including Mimir, Loki, Tempo, and Grafana—and Terraform-based automation. Experienced in setting up, tuning, and scaling observability platforms to support business-critical services with high reliability and performance. As a Staff SRE engineer, you will be involves collaborating with cross-functional teams to architect solutions, identify and resolve system bottlenecks, and establish best practices in operational excellence. With a focus on automation, observability, and incident management, you will also mentor junior engineers, foster a culture of reliability, and contribute to the strategic direction of our product engineering initiatives. This is a unique opportunity to make a significant impact on the stability and scalability of our technology ecosystem.
Responsibilities
System Reliability and Performance
- Ensure the reliability, availability, and performance of critical systems and services.
- Proactively identify and address system bottlenecks, failures, and performance issues.
Technical Leadership
- Lead the design, implementation, and optimization of scalable and fault-tolerant architectures.
- Provide guidance and mentorship to junior engineers, fostering technical growth.
Automation and Tooling
- Develop and enhance automation tools to streamline operational processes and improve efficiency.
- Champion automation-first principles to reduce manual toil and operational overhead.
Observability and Incident Management
- Build and operate OE stack. Involve in performance tuning, cost optimisation and observability initiatives to best serve the interest of the business.
- Drive incident response, root cause analysis, and post-incident reviews to improve systems.
Collaboration and Best Practices
- Partner with cross-functional teams (e.g., development, product, and infrastructure) to build robust systems.
- Define and implement best practices for reliability engineering, including CI/CD pipelines and infrastructure as code.
Strategic Contributions
- Influence the strategic direction of infrastructure and platform engineering initiatives.
- Evaluate and implement new technologies to enhance system resilience and operational capabilities.
Operational Excellence
- Drive continuous improvement in operational processes, reducing time to resolution for incidents.
- Promote a culture of accountability, innovation, and reliability throughout the engineering organization.
Preferred Qualification
- Strong proficiency in programming languages such as Python, Go, or similar.
- In-depth knowledge of Linux/Unix systems, networking, and distributed systems.
- Experience with cloud platforms (AWS, GCP, or Azure) and container orchestration tools (e.g., Kubernetes, Docker).
- Strong understanding of observability tools (e.g., Prometheus, Grafana, or Datadog).
- Proficiency in Infrastructure as Code (IaC) using Terraform
- Expertise in scaling and tuning Mimir and Loki for high-throughput workloads. Familiarity with distributed tracing using Tempo
- Knowledge of performance optimization techniques for high-availability systems.
- Strong collaboration skills with the ability to work across cross-functional teams.
- Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field (or equivalent experience).
- 8+ years of experience in Site Reliability Engineering or related roles in high-availability environments.
Recruitment Process and Others
Recruitment Process
- Application Review - Phone Interview - Onsite (or Virtual Onsite) Interview – Offer
- The exact nature of the recruitment process may vary according to the specific job and may be changed due to scheduling or other circumstances.
- Interview schedules and the results will be informed to the applicant via the e-mail address submitted at the application stage.
Details to Consider
- This job posting may be closed prior to the stated end date for application if all openings are filled.
- Coupang has the right to rescind an offer of employment if a candidate is found to have submitted false information as part of the application process.
- Those eligible for employment protection (recipients of veteran’s benefits, the disabled, etc.) may receive preferential treatment for employment in accordance with applicable laws.
- We are proud to offer equal opportunities for all applicants.
- Hiring may be restricted in case the legal qualifications required for hiring and work performance is not met.
- This is a full-time regular position and includes 12 weeks of probation period; provided, however, the probationary period may be either skipped, shortened or extended if necessary for business purposes.
Privacy Notice
- Your personal information will be collected and managed by Coupang as stated in the Application Privacy Notice is located below.
- https://privacy.coupang.com/en/land/jobs/
Document Return Policy
- This notification is given pursuant to Article 11 (6) of the Fair Hiring Procedure Act.
- A job applicant, who has applied but not been finally selected for a position at Coupang (the “Company”), may request the Company to return his/her hiring documents submitted pursuant to the Fair Hiring Procedure Act. However, this will not apply where the hiring documents were submitted via the website of the Company or e-mail, or where the job applicant submitted those documents voluntarily without a request from the Company. In addition, if the hiring documents were destroyed due to a natural disaster or any other reasons not attributable to the Company, such documents will be deemed to have been returned to the job applicant.
- A job applicant who wishes to request the return of his/her hiring documents pursuant to the main sentence of paragraph 2 above should fill out a “Request for Return of Hiring Documents” [Annex Form No. 3 in the Enforcement Rule of the Fair Hiring Procedure Act] and submit It by email ([email protected]). In such case, within fourteen (14) days from the date of identifying the receipt of the request, the Company will send the hiring documents to the job applicant’s designated address via registered mail. Please be informed that the job applicant is required to pay the postage on the registered mail.
- In preparation for a job applicant’s request for the return of hiring documents pursuant to the main sentence of paragraph 2 above, the Company shall retain the original hiring documents submitted by the job applicant for 180 days from the completion of the recruiting process. If no request is made until the end of this period, all his/her hiring documents will be destroyed immediately in accordance with the Personal Information Protection Act.
- The above paragraphs 1 - 4 shall only apply when the labor-related laws of Korea govern the application. They are otherwise not applicable.
Top Skills
What We Do
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.
Why Work With Us
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. At our core, we are bold and ambitious people that like to get our hands dirty and make a hands-on impact.
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