Staff Mobile Engineer [Marketing Product Engineering]

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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  

In Growth Engineering, our mission is to increase the number of transacting customers and grow their purchase frequency and lifetime value. We build platforms and services that power Coupang’s growth and marketing efficiency, including Search Advertising, Affiliate, Display targeting, CRM, Audience, and Push Marketing, along with core services for user profiles, landing, tracking, and attribution. As an Android Software Engineer, you will design, build, and operate high-quality mobile experiences and platform capabilities used by Coupang customers. You will serve as a technical owner for Android architecture and engineering quality, making sound decisions on modularization, performance, reliability, security, testing, and maintainability. You will also use AI tools responsibly to accelerate implementation, generate and review code, improve test coverage, and explore solutions across Android, iOS, and Web while maintaining appropriate engineering judgment and quality standards. This role requires strong technical leadership. You will influence architecture and execution across teams, mentor engineers, drive quality improvements, and work closely with product, design, backend, data, and platform partners to deliver simple, reliable, and customer-focused solutions.

What You Will Do  

• Own the architecture and technical direction of Android applications and shared mobile capabilities, balancing customer experience, delivery speed, scalability, and long-term maintainability.
• Design, implement, and operate robust Android features and services across the full software development lifecycle.
• Establish and continuously improve engineering quality standards, including code review, testing, observability, release safety, performance, reliability, and security.
• Lead technical discussions, clarify tradeoffs, and make pragmatic architecture decisions in ambiguous and fast-moving environments.
• Use AI-assisted development tools to accelerate coding, refactoring, documentation, test generation, and debugging while validating outputs for correctness, security, maintainability, and compliance.
• Apply strong cross-platform engineering judgment to support or prototype iOS, PC, and Web solutions with AI assistance, collaborating with specialists where appropriate.
• Improve automated test coverage and engineering feedback loops, including unit, integration, UI, regression, and production validation where appropriate.
• Partner with product managers, designers, backend engineers, data scientists, and other stakeholders to translate customer and business needs into clear technical solutions and execution plans.
• Investigate complex production issues, lead root-cause analysis, and drive durable fixes and preventive improvements.
• Communicate technical designs, risks, progress, and decisions clearly to technical and non-technical stakeholders.

Basic Qualifications  

• 8+ years of professional software engineering experience, including substantial experience building and operating production Android applications.
• Strong proficiency in Kotlin and the Android SDK, with solid understanding of Android application architecture, lifecycle, concurrency, networking, and performance optimization.
• Experience designing maintainable Android architectures using appropriate patterns for modularization, dependency management, state management, and separation of concerns.
• Demonstrated ownership of software quality, including test strategy, code review, CI/CD, observability, release management, and production issue resolution.
• Experience delivering complex software systems from design through launch and operation.
• Experience influencing technical direction and engineering practices across a team or multiple teams.
• Demonstrated ability to mentor engineers, communicate effectively, and provide technical leadership without relying solely on organizational authority.
• Experience independently owning medium-to-large initiatives and influencing architecture and execution across teams without direct reporting authority.
• Hands-on experience using AI-assisted programming tools to improve development productivity, code quality, testing, or debugging, with the ability to critically review and validate AI-generated output.
• Bachelor’s degree in computer science or a related field, or equivalent practical experience.
• Written and verbal communication skills in English are required for effective collaboration with global teams.

Preferred Qualifications  

• Experience building large-scale consumer-facing mobile applications with demanding requirements for performance, reliability, experimentation, and rapid release cycles.
• Experience with mobile observability, crash and ANR analysis, performance profiling, feature flags, experimentation, and staged rollout strategies.
• Working knowledge of iOS, Swift, Web, PC, or shared cross-platform development, and the ability to use AI assistance to contribute effectively outside a primary platform.
• Experience integrating mobile applications with distributed backend services, analytics, and personalization or marketing platforms.
• Familiarity with AI coding agents, code-generation workflows, prompt design, automated code review, and secure software development practices for AI-assisted engineering.
• Strong problem-solving skills and the ability to work backwards from customers to deliver simple solutions.
• Experience working in a fast-paced, ambiguous, and agile environment.

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. 

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/privacy-policy/