Senior Full Stack Developer (Java + React)

Google Chrome Microsoft Edge Apple Safari Mozilla Firefox Senior Full Stack Developer (Java + React)Full-timeCompany DescriptionAre you a Senior Full Stack Developer who thrives on building scalable, high-performance systems? Join us at Sigma Software and contribute to a cutting-edge platform for a leading pet products marketplace — a solution designed to serve millions of customers and transform the way pet owners shop online.In this role, you will be part of a skilled, collaborative team working with modern technologies to create a robust, customer-focused product that stands out in the e-commerce space.Why join us? You’ll be working on a high-impact project where your ideas and technical decisions will directly influence product success and user experience.CUSTOMEROur Customer is an industry-leading marketplace specializing in pet products, boasting an extensive online presence and a massive product catalog.PROJECTThe project focuses on the development and optimization of a cutting-edge, high-performance marketplace platform designed to transform the online shopping experience. You will join the team, which develops and maintains core systems for managing catalogs, pricing, and inventory. This team ensures accurate tracking of items and services (like drugs, suppliers, and tests) as well as current and incoming stock, building scalable, large-scale distributed systems that handle substantial data volumes with low latency and robust fault tolerance.Key Technologies: Java, React, REST APIs, Distributed Systems, Event-Driven Architecture, HBase, Cassandra, MongoDB, Redshift, AWS, Google Cloud, AzureJob DescriptionDesign, develop, and implement large-scale distributed systems to handle substantial data volumes, ensuring scalability, low latency, and fault toleranceImplement APIs and event-driven solutions to meet system requirements and enhance functionalityCreate and execute comprehensive unit tests, API tests, regression tests, and performance tests to ensure the reliability and efficiency of the systemUtilize modern frontend frameworks like React for web developmentOptimize solutions for scalability, reliability, and high performanceCollaborate closely with cross-functional teams to promptly address and resolve production incidents, ensuring minimal downtime and swift recoveryQualifications5+ years of experience in software development with object‑oriented programming languages, specifically JavaSolid hands-on experience with frontend frameworks, specifically ReactExtensive experience in building multi‑tier web applications and creating REST APIsStrong understanding of OOP principles, design patterns, algorithms, and data structuresPractical knowledge of cloud platforms like AWS, Google Cloud, or AzureExperience with CI/CD pipelines and containerization tools like Docker or KubernetesFamiliarity with both relational and NoSQL databases such as HBase, Cassandra, MongoDB, RedshiftHands‑on experience in Linux/Unix environmentsStrong analytical and problem-solving skillsAt least an Upper-Intermediate level of EnglishWILL BE A PLUSExperience with GraphQLUnderstanding of high-load system optimizations in the E-commerce domainAdditional InformationPERSONAL PROFILEExcellent communication skills and the ability to work with cross-functional teamsStrong collaborative mindset and proactive approach to task ownershipBy clicking the link above or any third-party link within this posting, you are leaving this site and going to a third-party website where the third-party website's terms and privacy policy applyI'm interestedI'm interestedI'm interestedRefer a friendshare this jobShare to WeChat×Copy the link and open WeChat to share.Copy to clipboardOpen WeChatShare to WeChat×Use Scan QR Code in WeChat and click ··· to share.