Job responsibilities of a big data development engineer: 1. Participate in building the SocialScan data platform, responsible for establishing and maintaining the big data warehouse, and complete tasks such as data extraction, integration, and analysis according to business needs. 2. Participate in the development of B-end and C-end product functions, and complete module design, coding, and testing work according to product requirements. 3. Able to submit high-quality code and complete development tasks on time according to the project plan. Responsible for writing backend and related documents.