About Coupang

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:

In Growth Engineering, our goal is to increase the number of transacting Customers while also growing their purchase frequency and lifetime value. We build core platforms and services that power Coupang's growth and marketing efficiency. Various platforms under our portfolio include Search Advertising Platform, Affiliate Platform, Display targeting & re-targeting Platform, CRM, Audience Platform, Push Marketing Platform, and other core marketing services for user profile, landing, tracking & attribution. ML opportunities across these portfolios include targeting, personalization, product & offer recommendations, budget optimization, real-time bidding, creative optimization, fraud detection, and various others.

As a Senior Staff Engineer within Coupang’s Growth Engineering team, you will be instrumental in architecting and developing a next-generation CRM platform. You will lead initiatives to ensure the platform delivers an end-to-end campaign management including Campaign Plan, Target Customer Selection, Promotion optimization, Product Selection, Creative Management, Landing Page Creation and Campaign Performance Measurement. Design a real-time decision engine to empower downstream services across the Growth Engineering ecosystem. Your expertise will directly contribute to advancing Coupang’s data-driven capabilities, aligning technical innovation with strategic business objectives.

Key Responsibilities:

• Design, develop, and automate large-scale, high-performance streaming data processing systems to drive business growth and enhance product experience

• Build scalable infrastructure and pipelines using best-in-class software engineering practices

• Ensure the platform supports high availability, reliability, and low-latency.

• Take full ownership end to end: from solution investigation/benchmark, development to operational health

• Establish and execute short and long-term architectural roadmaps

• Drive continuous improvement to the efficiency and flexibility of the data, platform, and services while maintaining a high bar for customer trust, performance, and availability

• Collaborate with data scientists, machine learning engineers, and other stakeholders to understand data requirements and deliver solutions

• Implement data quality and validation processes to ensure the accuracy and consistency of ingested data

Basic Qualifications:

• 10+ years of professional software development experience

• 5+ years of experience in data-related products with proficiency in Spark, Flink, Spring, and Java

• Experience with open-source frameworks and technologies, like Spring, AWS, APIs, NoSQL, Big Data Technologies (Kafka, Hive, Cassandra, Click House, Apache Flink, Apache Spark, or similar)

• Excellent coding skills, with emphasis on data structures, algorithms, problem solving, refactoring, performance improvement and complexity analysis

• Distributed systems experience is a must, should be skilled at designing, implementing, and maintaining systems at scale, and working on tradeoffs based on business demand

• Taking ownership comes naturally to you and you thrive in an environment where priorities and requirements are not always clear

• Comfortable working and learning in an agile, fast-paced environment

• Bachelor’s degree in computer science or related field

Preferred Qualifications:

• Experience taking a leading role in building complex software systems that have been successfully delivered to customers

• Experience with internet-scale datasets and feature engineering (feature pipeline and feature store development)

• Experience communicating with users, other technical teams and senior management to collect requirements, describe software product features, technical designs and product strategy

• Experience influencing software engineering best practices

• Hands-on expertise in many disparate technologies, ranging from front-end user interfaces through to back-end systems and all points in between

• Experience working backwards from the customer and delivering innovative, simple solutions

• Fluency in oral English

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.

• 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.

Privacy Notice

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

https://www.coupang.jobs/en/privacy-policy/

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 the request to the Company (Coupang Recruiting Team, Tower 730, 570 Songpa-daero, Songpa-gu, Seoul). 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 of his/her hiring documents will be destroyed immediately in accordance with the Personal Information Protection Act.

• Hiring may be restricted in case the legal qualifications required for hiring and work performance are not met.

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.