Coupang Pay] Staff, Back-end Engineer (Fintech SRE)

• Ensure the reliability, availability, and performance of critical systems and services.
• Proactively identify and address system bottlenecks, failures, and performance issues.

• Lead the design, implementation, and optimization of scalable and fault-tolerant architectures.
• Provide guidance and mentorship to junior engineers, fostering technical growth.

• Develop and enhance automation tools to streamline operational processes and improve efficiency.
• Champion automation-first principles to reduce manual toil and operational overhead.

• Build and operate OE stack. Involve in performance tunning, cost optimisation and observability initatives to best serve the interest of the business.
• Drive incident response, root cause analysis, and post-incident reviews to improve systems.

• 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.

• Influence the strategic direction of infrastructure and platform engineering initiatives.
• Evaluate and implement new technologies to enhance system resilience and operational capabilities.

• Drive continuous improvement in operational processes, reducing time to resolution for incidents.
• Promote a culture of accountability, innovation, and reliability throughout the engineering organization.

• 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.

• 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.

• 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.

• Your personal information will be collected and managed by Coupang as stated in the Application Privacy Notice is located below.

• 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 (recruitingops@coupangpay.com). 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.

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