岗位要求 /Required Qualification: Work Experience: 3+ years of professional backend development experience. Proficiency in one of the Python & Java and their mainstream ecosystems (e.g., Spring Boot), with the ability to build complex applications and production-level code. Must also have project experience with the other language (minimum one project). Hands-on experience with SQL databases (e.g., MySQL) and NoSQL databases (e.g., Elasticsearch, TDengine, Redis). Solid understanding of distributed systems principles. Practical experience with big data technologies (e.g., Apache Spark, Kafka, Flink, Dask) for large-scale data processing. Hands-on experience with public cloud services. Familiarity with their object storage, file storage, compute, and networking services. Proficient in using container orchestration platforms such as Docker and Kubernetes. Experience building REST APIs. Knowledge of gRPC and ProtoBuf, with mastery of related technologies like service discovery and load balancing. Ability to perform system programming and debugging in Linux environments; experience interacting with hardware peripherals (e.g., reading data via Ethernet, USB, CAN interfaces). Experience handling high-throughput I/O, inter-process communication, or multi-threaded programming.