Pei Yin Chong

· Designed and implemented medium-to-high complexity CorePlus annual bonus features within a Spring Boot microservices architecture, handling critical income streams for Amway Business Owners (ABOs). · Refactored persistence layers by reducing redundant DB calls and optimizing complex queries across Oracle DB and Amazon DynamoDB, significantly reducing API response times. · Maintained application reliability using Spring Boot Actuators for monitoring; automated version updates and Jenkins/AWS CodePipeline deployments using Python scripts. Having experience utilising various monitoring tools such as Kibana, Grafana, Splunk and Dynatrace for troubleshooting and support of applications. · Leveraged custom AI agents and AWS Kiro IDE/CLI to trace cross-system calculation discrepancies, reducing complex system investigations from days to hours. · Integrated AI tools to automate Jira documentation and requirements breakdown, accelerating overall delivery velocity. · Acted as the primary bridge between global stakeholders and the engineering team; translated ambiguous business needs into highly structured, workable Jira epics and stories. · Conducted technical debt and scalability assessments to provide stakeholders with accurate delivery estimations, risk mitigation plans, and system boundary expectations. · Partnered with Tech Leads and Scrum Masters to eliminate delivery gaps, designing robust technical documentation to onboard non-technical stakeholders and QA teams. · Provided guidance to junior developers and contractors through code reviews and pair programming sessions with the Tech Lead and developers from India, Europe and United States. · Engineered highly flexible, reusable code modules by grouping recurring business logic patterns into unified methods, safeguarding future product extensions against legacy bugs.

- Performed detail studied on existing code logic and code refactoring on APIs to improve code readability by implementing new Java version features, improve DB performance through reducing redundancy DB calling and optimising queries which resulted in enhancement of efficiency and reducing of APIs response time. - Responsible to convert code logic into technical documentation for APIs, example: Data Mapping of APIs. These documentations are mainly used to guide business/technical user of other teams and QA testers on understanding the existing APIs logic and the info returned from response. Purpose is to act as a guide and ease clarification on the APIs usage. - Continuous sharing and collaborate with team members across the globe towards working to deliver business value to Amway Business Owner (ABO). - Guiding contractor developers and junior developers on all APIs and MAGIC related technical and business knowledge. - Involved in webMethod endpoints removal which removed dependency of webMethod technology that are obsoleting, decrease troubleshooting lead time and easing maintainability. - Involved in stakeholder enhancement of events and consumers related APIs. - Provide L2 and L3 support on APIs related queries and issues. - Involved in CI/CD of APIs.

Responsibilities (Backend API Development): • Provide backend API development and support to Amway internal application known as “MAGIC” Solution. • Involved in Agile methodology in software development life cycle for solution deliveries. • Involved in enhancing and migrating monolithic APIs to microservices which managed to reduce lead time, improve flexibility and troubleshooting. • Implementing “pull” approach in replacing the traditional “push” approach for some RESTful APIs in Amway Magic Solution as part of modernisation by using Kafka Events, which successfully enhanced monitoring of issues, ease of troubleshooting through utilisation of Grafana and decoupling the service to reduce dependency. • Perform detailed testing and Junit testing on development to ensure efficiency and the quality of the solution provided. • Collaborate with cross-functional teams located in US and across the globe to understand functional requirements, sharing of knowledge and deliver solution. • Involved in stakeholder management to support and assist for solution to go live, example switching of using Mashery token to JWT Token for APIs. • Flexibility in switching between development, support, documentation, and stakeholder management. Able to communicate with stakeholders from technical perspective and transcribe into business terms. Technical Skills: • Java 17 with Spring Boot • OracleDB and AWS DynamoDB • Restful API and microservices • Kafka Events • AWS • Junit Testing Experience in using infrastructures: • Eclipse, IntelliJ • Google Open API, Swagger, Postman, Kafka • Oracle, DynamoDB, PostgresDB • Analytical Tools : Dynatrace, Splunk, Kibana, Grafana, Confluence Kafka • GitHub, JIRA, Confluence Page, ServiceNow

Involved in a few projects with Cyber Village Sdn. Bhd as a web application developer to provide corporate internet banking (CIB) solutions to banks including Hong Leong Bank Malaysia, Hong Leong Bank Vietnam, MBSB Bank Malaysia and Bank Rakyat. Experienced in CIB back office support modules that includes the maintenance of the users such as maker and authoriser created by the bank user. Main responsibilities included: - Understanding CIB workflow and developing algorithm according to user's requirement such as Fund Transfer, DuitNow, Term Deposit Withdrawal and etc. - Development of front-end to back-end system of banking solution such as OTP, batch job applications, and etc. - Troubleshooting system and supporting production issues. - Enhance existing code to provides optimum performance to the applications/system. Experience in using • Java • Javascript • SQL • Front-end development using Stripes Beginner Level : • HTML, CSS • jQuery • Spring, Spring Batch, Hibernate Experience in using infrastructure such as • Application layer : IBM WAS 8, Jboss v7.1 • Database layer : IBM DB2 v10 • Build Environment : GIT, Gerrit • IDE Software : Eclipse

Design Engineer under General System Group. Job scope includes : • Performed power sequence checking and analysis for TV. • Performed small counter measure to analyze faulty TV board and taking measurements for TV system checking. • Troubleshooting of general TV system. • Testing and perform TV software checking such as TV booting up system and various environmental testings. • Conduct improvement design changes to TV board and system.

• Undergoing internship with Sony EMCS under the RnD department of Tuner Group (Television Department). • Scope of training includes introduction to the basics of a TV’s tuner and the research and development process of the company. • Training also involved with handling various measuring equipment such as oscilloscope, signal generator and etc. • Learned skills such as doing judgement after taking measurement, analyzing data obtained, simple problem solving skills, troubleshooting, soldering and presentation.