Principal Engineer, Middleware

At OKX, we believe that the future will be reshaped by crypto, and ultimately contribute to every individual's freedom. OKX is a leading crypto exchange, and the developer of OKX Wallet, giving millions access to crypto trading and decentralized crypto applications (dApps). OKX is also a trusted brand by hundreds of large institutions seeking access to crypto markets. We are safe and reliable, backed by our Proof of Reserves. Across our multiple offices globally, we are united by our core principles: *We Before Me*, *Do the Right Thing*, and *Get Things Done*. These shared values drive our culture, shape our processes, and foster a friendly, rewarding, and diverse environment for every OK-er. OKX is part of OKG, a group that brings the value of Blockchain to users around the world, through our leading products OKX, OKX Wallet, OKLink and more.

- Responsible for the overall architecture design and optimization of microservice governance frameworks (e.g., SpringCloud), RPC frameworks, MQ messaging middlewares (e.g., Kafka), and data middlewares (including RDB databases such as MySQL, NOSQL such as Redis, Elastic Search, etc.). - Conduct in-depth research and select appropriate technical solutions, driving the selection and implementation of middleware technologies to ensure high availability, scalability, and security of the system. - Proficient in microservices frameworks such as Spring Boot and Spring Cloud, responsible for customized development and performance tuning of the frameworks. - Deep understanding of RPC communication mechanisms and the working principles of message queues, optimizing message transmission efficiency and resolving data consistency issues in distributed systems. - Combine business requirements to design efficient data storage solutions, optimizing data access performance and cost. - Responsible for the integrated deployment, monitoring and alerting, troubleshooting, and emergency response of middleware systems, improving operational efficiency and system stability. - Keep abreast of industry trends, introduce new technologies and concepts, and promote team technical capabilities.

- Bachelor's degree or above in Computer Science or a related field, with a solid foundation in computer science. - Over **10 years of software development experience**, with at least **6 years of experience in middleware** or distributed system architecture design, and successful cases of large-scale project or complex system architecture design. - Proficient in microservice architecture design and implementation, familiar with RPC frameworks such as Spring Cloud and Dubbo, as well as messaging middlewares like Kafka and RabbitMQ. - Deep understanding of the design and optimization of NoSQL databases such as Redis and MongoDB, as well as relational databases like MySQL. - Familiar with the use and optimization of search engines such as Elastic Search. - Practical experience with configuration centers such as Nacos and Apollo, as well as containerization technologies like Kong API Gateway and Kubernetes (K8S). - Understanding of distributed coordination services such as etcd and Zookeeper, and have some understanding and practical experience in cutting-edge technologies such as ServiceMesh, Sidecar, and eBPF. - Possess top-level design capabilities for complex systems, able to independently complete the entire process from requirement analysis to technical solution design.

- Competitive total compensation package - L&D programs and Education subsidy for employees' growth and development - Various team building programs and company events - Wellness and meal allowances - Comprehensive healthcare schemes for employees and dependants - More that we love to tell you along the process!

OKX is a leading global cryptocurrency exchange founded in 2017, offering spot and derivatives trading, Web3 solutions, and a digital wallet. The platform supports over 300 cryptocurrencies and ranks fourth in daily trading volume, with recent expansion into tokenized securities trading in partnership with the NYSE parent company.