Hiring: Principal Software Engineer – Marketplace Platforms Company: Walmart Global Tech Location: Sunnyvale, CA Job Posted Time: 2026-09-10 10:43:33 Target Skills & Keywords : AWS, Azure, CI/CD, Cassandra, Data Pipeline, Docker, ELK Stack, Enterprise Architecture, Epic Systems, Event-Driven, Feature Store, Flink, GCP, Grafana, HDFS, Hadoop, Hive, Java, Kafka, Kubernetes, Microservices, MongoDB, MySQL, OpenTelemetry, PostgreSQL, Prometheus, REST, SQL, Service Mesh, Spark, Spring, Spring Boot, Systems Design, gRPC, yarn About the job Experience: •10+ years of software engineering experience in large-scale systems Required Skills: •Serve as a technical authority responsible for building high-throughput, low-latency systems that power marketplace growth at massive scale. •Architect and build distributed marketplace services for seller onboarding, catalog, pricing, inventory, and order flows •Design event-driven and streaming architectures using Apache Kafka for real-time marketplace signals •Develop and optimize Java-based microservices using Spring / Spring Boot •Build high-volume data pipelines using Big Data frameworks (Spark, Hadoop, Flink) for analytics and ML •Enable AI/ML use cases such as fraud detection, pricing optimization, seller scoring, and recommendations •Lead system design reviews, performance tuning, and scalability planning •Define engineering standards for resiliency, observability, CI/CD, and operational excellence Qualifications: •Expert proficiency in Java with strong knowledge of concurrency and multithreading •Deep experience building distributed, highly available systems •Applied hands-on capability in Apache Kafka (topics, partitions, offsets, schema evolution, exactly-once semantics) •Hadoop ecosystem (HDFS, Hive, YARN) •Flink or equivalent stream-processing engines •Strong experience with microservices, REST/gRPC APIs •Proficiency with SQL and NoSQL databases •Strong system design, troubleshooting, and performance-optimization skills •Marketplace, e-commerce, payments, or supply-chain platform experience •Cloud-native development on AWS, GCP, or Azure Compensation: •$143,000 - $286,000 / year •Other great perks include 401(k) match, stock purchase plan, paid maternity and parental leave, PTO, multiple health plans, and much more Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don't miss this opportunity to join a forward-thinking team!