Staff Android Engineer (NEW Fintech Product)

Staff, Back-end Engineer (Global Operations Technology)

Coupang

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 are collectively disrupting the multi-billion-dollar commerce industry from the ground up and establishing an unparalleled reputation for being leading 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 at 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.   Role Overview The Global Operations Tech (GOT) organization is responsible for the systems that enable Coupang to reliably deliver to customers within hours of orders being placed. GOT is on a mission to innovate logistics by building an efficient delivery network at breakthrough scale and speeds. As a Staff Backend Engineer in GOT, you will leverage advanced algorithms to improve Coupang’s customer experience by ensuring ultra-fast deliveries are on time even during the busiest times of the year.    What You Will Do * Design and develop system architecture for Global Operations Technology to ensure stable operations. * Develop front/back office web services based on the Java platform. * Identify dependencies across multiple domains and develop system integrations. * Evaluate and adopt new technologies to enable efficient development and operations. * Implement optimization algorithms to find the most cost-effective and fastest delivery methods based on rule-based logic.   Qualifications * Experience developing web applications using Java and Spring Framework. * 7+ years of programming experience. * 5+ years of hands-on experience in web application development and operations, or equivalent capabilities. * Interest in experiencing Coupang’s global-level logistics systems and diverse domains. * Passion for developing high-availability systems that handle large-scale traffic in a microservices architecture (MSA) environment.   Preferred Qualifications * Experience or understanding of microservices architecture-based system development. * Experience or understanding of service development and operations in cloud environments. * Experience with asynchronous event-driven architecture for large-scale processing. * Experience improving code quality through development best practices. * Experience with ORM tools such as JPA or Hibernate and domain modeling. * Experience developing e-commerce services. * Experience with build/test/deployment automation. * Experience handling large-scale data using NoSQL technologies (e.g., Memcached, Redis).   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. * Coupang does not discriminate against disabled applicants or those with veteran status. 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 1. This notification is given pursuant to Article 11 (6) of the Fair Hiring Procedure Act. 2. 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. 3. 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@coupang.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. 4. 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. 5. The above paragraphs 1 - 4 shall only apply when the labor-related laws of Korea govern the application. They are otherwise not applicable.   전형 절차 및 안내 사항 * 전형 절차 * 서류전형 - 전화면접 - 대면면접 – 최종 합격 * 전형 절차는 직무별로 다르게 운영될 수 있으며, 일정 및 상황에 따라 변동될 수 있습니다. * 전형 일정 및 결과는 지원서에 등록하신 이메일로 개별안내드립니다. * 참고 사항 * 본 공고는 모집 완료 시 조기 마감될 수 있습니다. * 지원서 내용 중 허위사실이 있는 경우에는 합격이 취소될 수 있습니다. * 취업 보호 대상자(보훈대상자, 장애인 등)는 관련 법률에 따라 채용우대를 받을 수 있습니다. * 개인정보 처리방침 * 쿠팡 그룹은 입사지원자 개인정보 처리방침(아래 링크)에 따라 귀하의 개인정보를 수집하여 처리합니다. https://www.coupang.jobs/kr/privacy-policy/ * 서류 반환 정책 * 본 고지는 『채용절차의 공정화에 관한 법률』 제11조 제6항에 따른 것입니다. * 당사 채용에 응시한 구직자 중 최종합격이 되지 못한 구직자는 『채용절차의 공정화에 관한 법률』에 따라 제출한 채용서류의 반환을 청구할 수 있음을 알려 드립니다. 다만, 홈페이지 또는 전자우편으로 제출된 경우나 구직자가 당사의 요구 없이 자발적으로 제출한 경우에는 그러하지 아니하며, 천재지변이나 그 밖에 당사에게 책임 없는 사유로 채용서류가 멸실된 경우에는 반환한 것으로 봅니다. * 위 2항 본문에 따라 채용서류 반환 청구를 하는 구직자는 채용서류 반환청구서[채용절차의 공정화에 관한 법률 시행규칙 별지 제3호 서식]를 작성하여 당사 이메일( recruitingops@coupang.com )로 제출하면, 제출이 확인된 날로부터 14일 이내에 지정한 주소지로 등기우편을 통하여 발송해 드립니다. 이 경우 등기우편요금은 수신자 부담으로 하게 되오니 유념하시기 바랍니다. * 당사는 위 2항 본문에 따른 구직자의 반환 청구에 대비하여 채용 여부가 확정된 날로부터 180일간 구직자가 제출한 채용서류 원본을 보관하게 되며, 그때까지 채용서류의 반환을 청구하지 아니할 경우에는 『개인정보 보호법』에 따라 지체 없이 채용서류 일체를 파기할 예정입니다. Equal Opportunities for All Coupang is an equal opportunity employer. Our unprecedented success could not be possible without the valuable inputs of our globally diverse team.

Staff, Back-end Engineer (Gateway Services)

Coupang

Korean text will follow English   Company Introduction We exist to wow our customers. We know we’re doing the right thing when we hear our customers say, “How did I ever live without Coupang?” Born out of an obsession to make shopping, eating, and living easier than ever, we are collectively disrupting the multi-billion-dollar commerce industry from the ground up and establishing an unparalleled reputation for being leading 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 Gateway Services team is responsible for building Coupang’s traffic infrastructure layer leveraging Service Mesh architecture to enable reliable, scalable, and efficient inter-service communication across the company. This includes critical capabilities such as service discovery, load balancing, traffic resiliency, traffic management, failure recovery, and observability. As a Senior Staff Software Engineer, you will play a critical role in designing and evolving the Service Mesh platform that powers Coupang’s services at scale. You will lead the development of fine-grained, enterprise-wide traffic control systems using state-of-the-art technologies such as Istio, Envoy, Kubernetes, ArgoCD, and SPIFFE. In this role, you will not only drive architectural decisions and deliver highly scalable infrastructure but also act as a thought leader and evangelist, promoting best practices in traffic management across the organization. You will collaborate with cross-functional platform teams to solve complex infrastructure challenges and establish a modern, extensible platform that supports Coupang’s rapid growth.   What You Will Do  * Design and implement Service Mesh architecture and fine-grained traffic control systems in large-scale microservices environments * Develop and enhance core infrastructure components related to traffic management, including service discovery, load balancing, and resiliency mechanisms * Build and operate Service Mesh components using technologies such as Istio and Envoy within Kubernetes environments * Architect and develop workload and service management infrastructure for large-scale distributed systems * Design and implement high-performance infrastructure components using Go, Rust, or C++  * Simplify complex infrastructure problems into scalable and executable solutions aligned with Coupang’s leadership principles (Move with Urgency, Ruthless Prioritization) * Drive platform scalability, reliability, and operational excellence, setting high standards for system design and architecture * Perform deep root cause analysis of critical system issues and proactively prevent recurrence * Collaborate with platform teams and technical leaders to improve system scalability and unlock new innovation opportunities * Act as a technical leader and evangelist, promoting Service Mesh and traffic management best practices across the organization   Basic Qualifications * Bachelor’s degree or higher in Computer Science or a related technical field * 8+ years of software development experience with at least 2+ years in a Technical Lead role * Experience in designing and implementing traffic management solutions for large-scale systems * Hands-on experience in designing and building large-scale distributed systems within the past 3 years  * Strong experience in designing and implementing traffic management solutions at scale * Proven expertise in Service Mesh technologies (e.g., Istio, Envoy) * Strong programming skills in Go, Rust, or C++, with a track record of delivering mission-critical systems * Experience with cloud platforms such as AWS, Azure, or GCP * Strong problem-solving skills with the ability to independently drive complex technical initiatives  * Excellent communication and collaboration skills across cross-functional teams   Preferred Qualifications * Deep understanding of networking fundamentals including VPCs, subnets, routing, gateways, and service networking * Strong knowledge of modern microservices architecture and API design patterns at scale * Experience building high-performance, large-scale distributed systems * Experience with Kubernetes ecosystem tools (e.g., ArgoCD, SPIFFE)  * Ability to manage competing priorities in a fast-paced environment and lead large-scale project delivery * Experience providing technical leadership in platform or infrastructure engineering teams * Demonstrated ability to influence organization-wide technical decisions and drive engineering excellence   Recruitment Process and Others Recruitment Process   * Application Review - 1st Interview - 2nd 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.   * Job titles and responsibilities may be subject to change depending on the candidate’s overall experience, etc. This will be communicated to the candidate at the appropriate time before the offer.   * 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 located below.  * https://privacy.coupang.com/en/land/jobs/    Document Return Policy    1. This notification is given pursuant to Article 11 (6) of the Fair Hiring Procedure Act.   2. 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.   3. 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@coupang.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.   4. 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.   5. The above paragraphs 1 - 4 shall only apply when the labor-related laws of Korea govern the application. They are otherwise not applicable.  ---------------------------------------------------------------------------------------------------------------------------------- 회사 소개  쿠팡은 고객 감동 실현을 위해 존재합니다. 고객들이 "쿠팡 없이 그동안 어떻게 살았을까?" 라고 말할 때, 비로소 우리의 미션을 실현하고 있음을 알 수 있습니다. 고객들의 쇼핑과 식사, 생활 전반을 편하게 만들겠다는 유일한 집념으로 쿠팡은 수억 달러 규모의 이커머스 산업 전반의 혁신을 이끌고 있습니다. 쿠팡은 가장 빠르게 성장하는 이커머스 기업 중 하나로, 국내 커머스 업계에서의 독보적인 입지와, 고객 신뢰를 구축했습니다.     쿠팡은 스타트업 문화를 기반으로 한 글로벌 대형 상장사라고 자부합니다. 이것이 창립 당시의 기민함을 유지하며, 신규 서비스를 끊임없이 출시하며 비즈니스를 확장해 나가는 우리의 성장 동력입니다. 쿠팡의 모든 임직원에게는 기업가 정신을 갖추고 새로운 혁신과 이니셔티브를 추진할 수 있는 기회가 주어집니다. 주저 없이 일에 뛰어들어 성과를 이루고자 하는 과감성이, 바로 쿠팡이 일하는 방식의 본질입니다. 쿠팡에서는 여러분 자신, 동료, 팀 그리고 회사 전체가 매일 성장하는 모습을 목격할 것입니다.    쿠팡의 모든 직원은 커머스의 미래를 만들겠다는 쿠팡의 미션에 진심입니다. 우리는 고객의 문제를 해결해 나가고, 전통적인 관념과 통념에 맞서며 실현 가능한 한계를 뛰어넘고 있습니다. 고가용성 (always-on) 과 최첨단의 앞선 기술 (high-tech), 초연결사회 (hyper-connected world) 에서의 놀라운 업무 경험을 원하신다면, 지금 바로 쿠팡에 합류하세요.     직무 소개  Gateway Services 팀은 Service Mesh 아키텍처를 기반으로 쿠팡의 트래픽 인프라 레이어를 구축하며, 회사 전반의 서비스 간 통신을 안정적이고 효율적으로 지원합니다. 이 인프라는 서비스 디스커버리, 로드 밸런싱, 트래픽 복원력(resiliency), 트래픽 관리, 장애 복구, 관측성(observability) 등 핵심 기능을 포함합니다. Senior Staff Software Engineer로서, 쿠팡 서비스 전반을 지원하는 Service Mesh 플랫폼의 아키텍처 설계 및 고도화를 주도하게 됩니다. Istio, Envoy, Kubernetes, ArgoCD, SPIFFE 등 최신 기술을 활용하여 엔터프라이즈 수준의 정밀한(fine-grained) 트래픽 제어 시스템을 구축하고 발전시키는 데 핵심적인 역할을 수행합니다. 또한 기술 리더이자 전도사(evangelist)로서 조직 전반에 트래픽 관리 및 Service Mesh의 모범 사례를 확산하고, 다양한 플랫폼 조직과 협력하여 복잡한 인프라 문제를 해결하며 확장 가능하고 미래 지향적인 플랫폼을 만들어 나갑니다.   업무 내용  * 대규모 마이크로서비스 환경에서 Service Mesh 아키텍처 및 정밀 트래픽 제어 시스템 설계 및 구현 * Service Mesh 기반의 트래픽 관리 인프라 구성 요소 (서비스 디스커버리, 로드 밸런싱, 복원력 등) 개발 및 고도화 * Istio, Envoy 기반의 Service Mesh 데이터/컨트롤 플레인 컴포넌트 개발 및 운영 (Kubernetes 환경) * 대규모 분산 시스템을 위한 워크로드 및 서비스 관리 인프라 아키텍처 설계 및 개발 * Go, Rust, C++ 기반의 고성능 인프라 시스템 설계 및 구현 복잡한 인프라 문제를 단순하고 실행 가능한 구조로 분해 * 고가용성, 확장성, 안정성을 갖춘 플랫폼 아키텍처 설계 및 표준 수립 장애 발생 시 근본 원인 분석 및 재발 방지 체계 구축을 통한 운영 우수성 향상 * 다양한 플랫폼 팀 및 기술 리더와 협업하여 확장성과 혁신 기회 창출 * Service Mesh 및 트래픽 관리에 대한 조직 내 기술 리더십 및 전파 역할 수행   자격 요건  * 컴퓨터공학 또는 관련 전공 학사 학위 이상 보유하신 분 * 8년 이상의 소프트웨어 개발 경력과 2년 이상의 Technical Lead 경험을 보유하신 분 * 최근 3년 이내 대규모 분산 시스템 설계 및 개발 경험을 보유하신 분 * 대규모 트래픽 환경에서 트래픽 관리 솔루션을 설계 및 구현한 경험을 보유하신 분 * Service Mesh(Istio, Envoy 등) 설계 및 구현 경험을 깊이 있게 보유하신 분 * Go, Rust, C++ 중 하나 이상의 언어에 대한 뛰어난 개발 역량을 보유하시고, 미션 크리티컬 시스템 개발 경험을 보유하신 분 * AWS, Azure, GCP 등 클라우드 환경 기반 개발 경험을 보유하신 분 * 복잡한 문제를 주도적으로 해결할 수 있는 문제 해결 역량을 보유하신 분 * 다양한 조직과 원활하게 협업할 수 있는 커뮤니케이션 역량을 보유하신 분   우대 사항  * VPC, 서브넷, 라우팅, 게이트웨이 등 네트워크 구성 요소에 대한 깊은 이해를 보유하신 분 * 대규모 환경에서의 마이크로서비스 아키텍처 및 API 설계 경험을 보유하신 분 * 고성능·대규모 분산 시스템 구축 경험을 보유하신 분 * Kubernetes 생태계(ArgoCD, SPIFFE 등) 활용 경험을 보유하신 분 * 빠르게 변화하는 환경에서 우선순위를 조율하며 대규모 프로젝트를 리딩한 경험을 보유하신 분 * 플랫폼/인프라 조직에서의 기술 리더 경험을 보유하신 분 * 조직 전반에 기술 방향성을 제시하고 영향력을 발휘한 경험을 보유하신 분    전형 절차 및 안내 사항  * 전형 절차  * 서류전형 - 1차 면접 - 2차 면접 - 최종 합격 * 전형절차는 직무별로 다르게 운영될 수 있으며, 일정 및 상황에 따라 변동될 수 있습니다. * 전형 일정 및 결과는 지원서에 등록하신 이메일로 개별 안내 드립니다.  * 참고 사항  * 본 공고는 모집 완료 시 조기 마감될 수 있습니다. * 지원서 내용 중 허위사실이 있는 경우에는 합격이 취소될 수 있습니다. * 취업 보호 대상자(보훈대상자, 장애인 등)는 관련 법률에 따라 채용우대를 받을 수 있습니다.  * 직급과 담당 업무 범위는 후보자의 전반적인 경력과 경험 등 제반사정을 고려하여 변경될 수 있습니다. 이러한 변경이 필요할 경우, 최종 합격 통지 전 적절한 시기에 후보자와 커뮤니케이션 될 예정입니다. * 채용 및 업무 수행과 관련하여 요구되는 법령상 자격이 갖추어지지 않은 경우 채용이 제한될 수 있습니다.  * 고용형태는 정규직으로 수습기간 12주를 포함합니다. 단, 업무상 필요한 경우에는 상기 수습기간을 적용하지 않거나 단축 또는 연장할 수 있습니다.    개인정보 처리방침    * 쿠팡 그룹은 입사지원자 개인정보 처리방침(아래 링크)에 따라 귀하의 개인정보를 수집하여 처리합니다. https://www.coupang.jobs/kr/privacy-policy    서류 반환 정책    1. 본 고지는 『채용절차의공정화에관한법률』 제11조제6항에 따른 것 입니다.  2. 당사 채용에 응시한 구직자 중 최종 합격이 되지 못한 구직자는 『채용절차의 공정화에 관한 법률』에 따라 제출한 채용서류의 반환을 청구할 수 있음을 알려 드립니다. 다만, 홈페이지 또는 전자우편으로 제출된 경우나 구직자가 당사의 요구 없이 자발적으로 제출한 경우에는 그러하지 아니하며, 천재지변이나 그 밖에 당사에게 책임 없는 사유로 채용서류가 멸실된 경우에는 반환한 것으로 봅니다. 3. 위2항 본문에 따라 채용 서류 반환 청구를 하는 구직자는 채용 서류 반환 청구서 [채용절차의 공정화에 관한 법률 시행규칙 별지 제 3 호 서식]를 작성하여 이메일 (recruitingops@coupang.com) 로 제출하면, 제출이 확인된 날로부터 14 일 이내에 지정한 주소지로 등기우편을 통하여 발송해 드립니다. 이 경우 등기우편요금은 수신자 부담으로 하게 되오니 유념하시기 바랍니다.   4. 당사는 위2항 본문에 따른 구직자의 반환 청구에 대비하여 채용 여부가 확정된 날로부터 180 일간 구직자가 제출한 채용서류 원본을 보관하게 되며, 그때까지 채용서류의 반환을 청구하지 아니할 경우에는 『개인정보 보호법』에 따라 지체 없이 채용서류 일체를 파기할 예정입니다. 5. 단, 위 1항 내지 4항의 내용은 대한민국의 노동 관계 법령이 적용되는 경우에만 적용됩니다. 그 이외의 경우에는 적용되지 않습니다.

Staff Backend Engineer (Streaming & AI Infrastructure)

Coupang

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. Role Overview As part of our Application Infrastructure org, this is a team building Coupang’s next-generation Real-Time Streaming & AI Platform that powers the end customer website and mobile apps. We are looking for a visionary Staff Software Engineer to lead the architectural design of a platform capable of processing over 100k+ events per second with sub-second, end-to-end latency. This system will serve as the central nervous system for Coupang, enabling real-time product and customer data and instant personalization. You will build a system that doesn't just meet industry standards but sets them, ensuring 5-6 nines availability while leveraging AI to optimize data flows and automate complex system behaviors. Responsibilities * Architect for Velocity: Lead the end-to-end design of a distributed streaming engine. You will Build the Best Team and Help Them Grow by setting the gold standard for high-throughput, low-latency architectural integrity. * Define Extreme Performance: Design for "5-6 nines" (99.9999% availability) at a throughput of 100k+ events/sec. You will Dive Deep into JVM tuning, memory management, and network I/O to ensure sub-second latency across global clusters. * AI-Driven Streaming: Integrate AI/ML models directly into the stream processing path. Implement predictive scaling and intelligent load balancing to ensure we Wow the Customer through seamless, real-time platform responsiveness. * Solve Hard Problems: Address challenges related to distributed consistency, at times, exactly-once processing guarantees, and backpressure management. You must Be Data-Driven to validate architectural decisions against massive, bursty traffic patterns. * Lead with Influence: As a Staff Engineer, you will Influence without Authority, collaborating with domain teams to migrate legacy batch processes to real-time streaming architectures. Basic Qualifications * Bachelor's degree in Computer Science, Electrical Engineering, Math, or a closely related field. * 6+ years of experience in backend software development. * Expert-level experience in Cassandra, TiDB, or DynamoDB * Expert-level proficiency in Java and the Spring Framework. * Demonstrated experience in building and maintaining highly available, distributed systems in cloud environments (AWS). * Experience with high-volume messaging systems (e.g., Kafka, SQS). Preferred Qualifications  * Extensive Experience: 10+ years of professional software development experience building backend infrastructure that supports global-scale, real-time traffic. * Performance Expert: Proven track record of optimizing JVM applications for ultra-low latency (<100ms p99s) and high concurrency. * AI Integration: Experience or a strong architectural vision for using AI/ML to automate system-level functionality, such as real-time anomaly detection in data streams. * Distributed Systems Expert: Deep understanding of the CAP theorem, consensus algorithms, and building fault-tolerant systems from the ground up. * Observability Expert: Expertise in building highly observable systems using distributed tracing and advanced telemetry to proactively identify bottlenecks in the streaming pipeline. Recruitment Process and Others * Recruitment Process  1. Application Review - Phone Interview - Onsite (or Virtual Onsite) Interview – Offer  2. The exact nature of the recruitment process may vary according to the specific job and may be changed due to scheduling or other circumstances.  3. Interview schedules and the results will be informed to the applicant via the e-mail address submitted at the application stage.  * Things to Consider  1. This job posting may be closed prior to the stated end date for application if all openings are filled.     2. 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.     3. Coupang does not discriminate against disabled applicants or those with veteran status. We are proud to offer equal opportunities for all applicants.  * Privacy Notice  1. Your personal information will be collected and managed by Coupang as stated in the Application Privacy Notice located HERE.  * Document Return Policy  1. This notification is given pursuant to Article 11 (6) of the Fair Hiring Procedure Act.   2. 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.  3. 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 the request to the Company by email (recruitingops@coupang.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.  4. 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 of his/her hiring documents will be destroyed immediately in accordance with the Personal Information Protection Act.  Equal Opportunities for All Coupang is an equal opportunity employer. Our unprecedented success could not be possible without the valuable inputs of our globally diverse team.