Senior Staff Back-end Engineer (Advertiser Platform Acquisition Experiment)

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.

Role Overview  

As our Senior Staff Software Engineer for Coupang Ads Group, you will be responsible for enhancing and evolving our advertising platform to take it to the next level and support Coupang’s rapid business growth.  

Coupang is investing in building a world-class Advertising business where we run relevant ads across our website and Mobile App. We are building the next generation of products and services to fuel Coupang ad business’s future growth by providing self-service advertising capabilities to our Sellers and Suppliers. 

At Coupang, we provide effective advertising solutions to help our sellers sell successfully. Acquiring new advertisers with high potential for success and delivering ongoing ad effectiveness is critical to our business. This position leads the development team and collaborates with Product, Data Analytics, and UX teams. Through experimentation and data-driven decision making, you will lead the development of the end-to-end advertiser funnel, from UX to backend systems to machine learning. You will tackle technical challenges such as scalability and interoperability across the Marketplace and Ads platform. By streamlining the onboarding process for advertisers, you will increase new advertiser acquisition and reduce advertiser churn, ensuring our systems can handle growing demand and complex integrations.  

This role is a critical position requiring both technical expertise and business acumen to elevate our advertising business to the next level. We are looking for an exceptional talent to join us on our growth journey. 

What you will do 

• Lead the technical development of Advertiser Acquisition & Engagement projects.
• Drive initiatives to improve new advertiser onboarding, conversion rates, and retention.
• Collaborate with stakeholders to analyze business opportunities and set priorities.
• Lead development across UI, Backend APIs, data pipelines, and machine learning models.
• Define key metrics and A/B tests, conduct experiments, analyze advertiser behavior and performance, and improve conversion funnels.
• Drive Ads domain expertise and mentor engineers within the team.
• Establish Dev Strategy with Industry Tech Sensing like Generative AI.

Basic Qualifications

• 10 years of software engineering experience
• Deep understanding of the ads domain and digital advertising business models
• Proven track record in data-driven decision making and A/B test design/analysis
• Comprehensive knowledge across various technical stacks including frontend, backend, data pipelines, and machine learning systems
• Strong communication skills to effectively explain complex technical problems to non-technical stakeholders
• Experience in performance management based on business metrics and KPIs 

Preferred Qualifications

• Experience with advertiser acquisition or retention projects on e-commerce platforms and ad marketplaces
• Experience developing ad bidding systems, ad targeting, and ad optimization algorithms
• Experience leading projects to improve ad efficiency utilizing machine learning/AI
• 5+ years of technical leadership experience
• Experience working with international teams and communication skills in Korean and English

Recruitment Process and Others

Recruitment Process

• Application Review - 1st Interview(Virtual) - 2nd Interview(Virtual)
• 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.

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