Coupang's Growth Engineering team aims to increase transacting customers, purchase frequency, and lifetime value by building core platforms and services that power growth and marketing efficiency. The Staff Engineer will architect and develop a next-generation data platform (Marketing Data Service) for low-latency processing, feature store creation, ML model training, and real-time inference serving, ultimately advancing Coupang's data-driven capabilities.
Requirements
- 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, ClickHouse, Apache Flink, Apache Spark, or similar)
- Hands on Python experience
- 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
- Experience with internet-scale datasets and feature engineering (feature pipeline and feature store development)
- Hands-on expertise in many disparate technologies, ranging from front-end user interfaces through to back-end systems and all points in between
Responsibilities
- Design, develop, and automate large-scale, high-performance streaming data processing systems to drive business growth and enhance product experience
- Build scalable data infrastructure and pipelines using best-in-class software engineering practices
- Develop optimal data models for storage and retrieval, meeting critical product and business requirements
- 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
Other
- 6+ years of professional software development experience
- 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
- Experience taking a leading role in building complex software systems that have been successfully delivered to customers
- Experience communicating with users, other technical teams and senior management to collect requirements, describe software product features, technical designs and product strategy
