Big Data Java Senior Engineer

Job Responsibilities:

• AI Application System Development
• Develop and maintain intelligent Q&A systems, search recommendation engines, and other AI applications using Java (Spring Boot / Spring Cloud).
• Design high-concurrency AI calling architectures, and design and implement functionalities such as Retrieval-Augmented Generation (RAG), dialogue context management, etc.
• Design and implement logic for recall, filtering, ranking, etc.
• Model Calling Service Development
• Call and manage various large language models (GPT, DeepSeek, Grok, etc.).
• Provide general AI services that meet the needs of transaction analysis and business growth.
• Data Processing and Feature Engineering
• Interface with data platforms to handle data collection, cleaning, structuring, and vectorization.
• Collaborate with algorithm teams to implement feature engineering, providing real-time and accurate data for business needs.
• Collaborate with different internal business departments, undertake related product requirements, and drive the implementation and deployment of AI products.
• Stay updated on industry trends and advanced products, propose forward-looking AI application architecture solutions, and promote their implementation.

Job Requirements:

• Core Technical Skills
• Solid Java Foundation: At least 2 years of Java development experience, proficient with collections, multithreading, JVM, reflection, etc.
• Concurrent Programming: Understand thread pools, locking mechanisms, concurrent containers, capable of writing high-concurrency code.
• Network Programming: Familiar with HTTP/gRPC, message queues (Kafka).
• Common Frameworks: Proficient in Spring Boot / Spring Cloud microservices ecosystem.
• Databases: Familiar with MySQL, Redis, knowledge of ElasticSearch is a plus.
• Engineering Capabilities
• Experience in leading or contributing to the design and development of large-scale systems, with relevant experience in performance optimization, system stability, and reliability.
• Familiar with overall microservices architecture (load balancing, API gateways, rate limiting/circuit breaking, etc.).
• Excellent communication and presentation skills, strong sense of responsibility, self-driven, with strong logical thinking abilities.
• Ability to coordinate work across teams and multiple departments, identify and drive solutions to key issues.
• Experience in AI/Big Data related fields is preferred.
• Knowledge or experience in Crypto, Finance, or related industries is a plus.