HiMy name is Wachirawut Phungirnngok, but you can call me TOTO. In my 14 yearsof experience in software development, I work with different tech stacks and tools to create designs and solutions that solve user problems such as Lucid app for create Bounded context, business flow and system flow, Kafka for data streams, and Golang my main and current programming language to build various services, the reason to use this language because it faster and small, especially Goroutine help to easy create concurrent and Channel help me to manage data safety on Goroutine.I also use GitHub Copilot for pair programming such as providing code suggestions when I try to create new functions and improving my codes when I have no ideas it can help me almost times, and it also saves my time from creating new models(Golang structs) when that code is so long which must be written line by line. I am experienced in Agile methodology to provide and improve better products for user satisfaction.In my previous roles as an EPIC owner, I have designed systems and architectures, working closely with teams to integrate various services to make sure that all parts work well together for the best user experience. On the other hand, I use different testing methods, including unit tests, integration tests, end-to-end (E2E) tests, and functional tests. I have also guided team members on best practices and coding standards to ensure we deliver good-quality code.At last for deployment and monitoring, I use Github action pipeline for CI/CD, and I use Grafana, OpenSearch and OpenTelemetry for monitoring the system.