Joey Qiu

Joey Qiu ć- | ] https://www.linkedin.com/in/iamjoey-qiu/ Personal Profile I’m a software engineer, blockchain engineer and system architect with more than 7 years of experience. I’m good at database optimization and servers optimization. I’m proficient in Java, Python, Solidity, Php and React and other programming languages and frameworks, delivering successful projects in diverse industries such as blockchain, e‑commerce, Internet medical care, new energy, industrial Internet of Things, and electronic signature passwords. I am experienced in project management, analyzing complex problems, and solving complex problems, I also have experience leading a team. If my current time zone is not your time zone, I still hope to have the opportunity to join you this time, and I can work with your time zone. Skills Programming Languages • Java, Python, SQL, PHP, Solidity, JavaScript, Css, Html. Tools & Frameworks • Spring, SpringCloud, SpringBoot, GC, JVM, SpringMVC, Mybatis, Mybatis‑plus, Hibernate, Node.js, Bootstrap, RocketMQ, RobbitMQ, Redis, Nginx, Gateway, Hystrix, Otter, Datax, Apollo, Elasticsearch, GitLab, Github, Jenkins, Shell, Markdown, Maven, React, NoSQL, EVM, Kafka, CI/DI, Shiro, Swagger, JUnit, Mockito, AssertJ. IDEs • Idea, Eclipse, PyCharm, My Eclipse, Visual Studio. RDMS • Oracle, Mysql, MongoDB, HBase. Operating Systems • Windows, Unix/Linux, MacOS, docker, Kubernetes, Google cloud, AWS, Ali cloud. Other Skills • Time Management, Teamwork, Problem‑solving, Documentation, Engaging Presentation, Design and tuning(highly concurrent and high‑ performance distributed systems), Architecture, ETH, Bitcoin, Blockchain. Languages • English, Chinese. Work Experience Pop Social Pop Social Project Senior Software Engineer and Smart Contract Engineer Mar 2023 ‑ Nov 2023 • Key Skills Used: Solidity, Java, Kafka, BNB, AWS. • Develop a set of contracts with Solidity that support trading SBT using BNB and deploy them to the BNB main network. • Design and develop a system in Java that supports large concurrency by exchanging tasks and publishing ugc operations for SBT. • Design and develop a robot defense system based on AI model and data warehouse. Hangzhou Tiangu Info‑tech Co.,Ltd Tianyin Project Senior Software Engineer and Smart Contract Engineer Mar 2020 ‑ Mar 2023 • Key Skills Used: Java, Web3, Python, Docker, React. • Note: ”Tianyin” is a hybrid cloud electronic signature software for enterprise seal management and control. It uses local deployment and public cloud signing to complete contract signing securely within the intranet. • Successfully reorganized technical team and guided completion of project on time and within budget. • Optimized Tianyin 5.3 signature and seal performance by 3x using advanced techniques and developed Java and SQL coding standards. Stream‑ lined Tianyin 5.3 query code and slow SQL, improving some queries by over 500%. • Spearheaded research process development and achieved a 100% single‑test rate. Developed code generation, SQL conversion, and other tools, increasing team efficiency. • Pioneered technical solution selection and developed Tianyin 6.0 reconstruction, enhancing signing performance by 2x over 5.3. • Designed and developed a cutting‑edge process engine, contract manager, and AI document comparison system, improving document quality and accuracy, Led the team to develop a blockchain‑based evidence system and make it legally effective. Puhui Intelligent Manufacturing Technology Co., Ltd Puhui Cloud MES Project Senior Software Engineer Aug 2019 ‑ Mar 2020 • Key Skills Used: Java, Redis, Mysql, Docker, K8s. • Optimized platform’s server architecture, developed core code, and managed system operations. Led team of 6 overseeing department, user, role, and module management. • Engineered service cluster, optimized program performance, and leveraged RocketMQ for asynchronous processing. Reduced page load times by 30% and response times by 20%. Streamlined system to serve 10M+ daily image requests with 200ms response time. • Revitalized MySQL database with master‑slave replication and read‑write separation, boosting query response times by 40% and system throughput by 50%. Troubleshot technical issues, optimized database queries, and improved performance by 40%. Implemented Elastic‑ search, elevating search success rate by 15%. • Led the team to design and develop a web3 industrial information system based on blockchain management, enabling the storage and tracing of raw materials and production for each product. Zhejiang Wedoctor Co.,Ltd Jiwei Cloud Project Senior Software Engineer Jul 2018 ‑ May 2019 • Key Skills Used: PHP, Python, Oracle, Solidity, Java. • Led 9‑person back‑end team to develop a blockchain‑based medical record system and exceed project goals, And developed a data synchro‑ nization double‑write system, so that the data can be synchronized in microseconds in different places, ensuring that the data in different places is more active. • Refactored project into microservices, improved workflows by 50%, and enhanced scalability. Orchestrated online replacement and gray release of the original business, minimizing downtime. • Implemented distributed system components, improving system performance by 60% and reliability by 50%, and segmented database by service, boosting performance by 120% and reducing complexity. • Developed intelligent disease management system using cutting‑edge technologies, revolutionizing public health. Freelancer Pop Adoption Project Senior Software Engineer and Smart Contract Engineer Apr 2018 ‑ Jul 2018 • Key Skills Used: Solidity, React, Java, EVM, Nginx. • Designed and deployed user‑friendly blockchain applications, and maintained and drove the adoption of blockchain applications. • Engineered secure and efficient smart contracts with Solidity, and execute with zkEVM, automating data transfer with Java, and conducted comprehensive testing to ensure security and functionality. • Optimized React web interfaces for a better user experience, accelerating development processes by about 30% with Truffle, Ganache, and Metamask, and delivering projects on time and within budget. Hangzhou Jiu Yuan Nerwork Technology Co.,Ltd Yujiejie Project Software Engineer Apr 2017 ‑ Apr 2018 • Key Skills Used: Tomcat, MongoDB, Java, RocketMQ, Maven. • Launched a comprehensive e‑commerce platform with real‑time order tracking, secure payment processing, advanced search, and streamlined after‑sales support. Created mall applet, tested rigorously, and designed product guide system. • Optimized server concurrency to improve performance by 30% with Redis, managed items with Git, and streamlined file storage with fastDFS and mybatis‑plus plugin. • Implemented global search with Elasticsearch, and established refund functionality for WeChat and Alipay payments. Hangzhou Metro Group JT Shopping Mall Project Full Stack Engineer Mar 2016 ‑ Apr 2017 • Key Skills Used: ElasticSearch, Jquery, Java, Git, Spring. • Pioneered user‑friendly product features with EasyUI and KindEditor, generating a 25% uptick in user engagement. Harvested and analyzed data from Jingdong using Jousp, identifying emerging market trends. Instituted Apache Shiro for secure role‑based access control, enhancing system security. • Built and optimized the presentation and data layer’s MVC and persistence framework for BOS system, utilizing Struts2, Spring, and Hibernate. • Streamlined user experience and productivity by designing and optimizing tree structures with jBPM workflow support and zTree. • Boosted user engagement and accessibility by developing dynamic front‑end pages using jQuery and JQuery Easy UI, and enabling seamless document download with POI. Education Zhejiang Normal University Transportation • Graduated with Distinction • Certificate of Excellent Mentor and Friend Pairing Program in Hangzhou Hangzhou Wanxiang Vocational and Technical College Urban Rail Transit Operation and Management • Graduated with Distinction • Singapore SIM University Young Global Leaders Certificate • Hong Kong Polytechnic University Business Leader Elite Certificate Zhejiang, China Mar 2015 ‑ Jun 2017 Zhejiang, China Sep 2011 ‑ Jun 2014