Xi Yuan Yap

As a Mid Level Java Engineer @ eBayMag CCOE team Migration eBayMag system from Ruby to Java Internal (RaptorIO), develop eBayMag 2.0 Project: Handle 100% category mapping for cross site listing - Leaf node id 100% mapping if exists. - Bottom up mapping by using LLM gemini 3.1 pro model for non id mapping on cross site. - RAG with vector db, ensure quality mapping - Skills in integration of AI LLM and RAG. AWF employee in eBay

Java Engineer @ Antom BU, Online Acquiring business. Handle Alibaba Group merchant. Reponsibilities: - Handle AliCloud Globl site payment, migrate payment flow to Antom standard API, support more payment ability and channel/bank. - Responsible for Trendyol merchant, as backup owner, handle requirement and monitoring, provide 6 Billion GMV after live, Live on 4th July. - Onboarded new merchant (Trendyol) and integration, delivered payment and acquiring solutions. - Responsible for development in payment and fund domains of the chargeback flow. - Responsible for unified payment platform domain, auth-capture/sales/refund transaction capability. - Responsible for the payment channel integration of Alibaba Group (LAZADA). - Ant’s middleware, system analysis, emergency response, risk management, Antom business. - Participate internal technical training on topics such as middleware architecture, system analysis, emergency response, risk management, code quality standards, development lifecycle. - Deep understanding of Ant International's business domains, with practical knowledge applied across payment infrastructure and platform engineering. Level: 9 (P4), Probation KPI: 3.5+, 2025 S1 KPI: 3.5+ Ant International & Alibaba Projects: - AliCloud payment API migration to Antom standard API, reduce cost for maintenance and provide more ability for merchant. - Integrate new payment method (HK Octopus Wallet) for Tmall Oversea. - Implement new quote model in the chargeback flow for Trendyol merchant. - Onboard Trendyol merchant to Antom by implement common solutions for their quotation model. Optimize auth-capture API for Alibaba Group. - Optimized the auth-capture API for Alibaba Group to enhance transaction efficiency and reliability across platforms. - Integrated payment channels between Antom and Lazada, enabling support for installment plan payment methods to improve user flexibility and regional coverage. - Contributed to an internal system, the Hybrid Seat System.

Working under uSmart Group, R&D team under FinSmart Solutions. Provide technical solution for uSMART Securities.

FinSmart Solutions, FinTech company, also as a sister company of uSMART Securities. We provides while labeling solutions for APAC securities/broker firm. Role: Java Backend Engineer Experienced in building robust and scalable backend systems using Java, Spring Cloud, and Microservices architecture. Specialized in User, Account, Asset, and Capital module services within the securities, brokerage, and financial domains. Key Skills & Experience: - Strong knowledge of Spring Cloud, Redis Cluster (for caching), and RabbitMQ (as message queue). - Hands-on deployment experience with Diamond, Wayne (Kubernetes platform), and XXLJob for scheduled tasks. - Proficient in ELK stack (Elasticsearch, Logstash, Kibana) for log analysis and system monitoring. - Familiar with service discovery and configuration management using Consul. - Integration with third-party systems such as Singpass (Singapore), eGiro (Singapore), and IAmSmart (Hong Kong). - Solid understanding of digital signing and encryption processes, including public/private key cryptography, with frequent collaboration with third-party teams. - Participated in RFP (Request For Proposal) meetings with local banks as the only technical presenter representing the IT department. Projects: - Involved in the development and integration of regional broker platforms such as uSmartSG, uSmartHK, and other confidential broker systems in China, Hong Kong, and Malaysia. Tools & Utilities: - Recommended tools: Intellij IDE, MySQL, Snipaste, Postman/Insomia, Git, Markdown, Typora.

Provide coding assignment service for local university students, mainly help with assignment using Java, C/C++, Python language. Flowchart design and pseudocode service. Error and bug fixes. Assist with FYP Project.

Test the ERP system of different customers to ensure the availability of the system and complete the test report. Develop the business form of the ERP system, mainly to design and realize the form requirements of each customer. Research how to use COBOL language to implement in the ERP system based on UTF-8. Participate in the development of the new ERP system, be responsible for the form development of the new system and develop a system based on UTF-8 encoding, supporting multi-language form styles.

Malaysian study abroad in Hangzhou, Zhejiang, China. Major in software engineering. 985 Top University (One of the Top 5 in China). C9 Top University Major courses : Object-oriented programming, database systems, Java application technology, software engineering management, software quality assurance and testing, operating systems, computer networks, B/S system software design, introduction to large-scale information system construction technology.