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I have many years experience specializing in the fullstack development, infrastructure. Enjoys to customize all of the development environment. Interested in desinging a better problem-solving method for challenging tasks, and learning new technologies and tools if the need arises.

國立台中科技大學

Technical Lead

鄭晉丞

Hashgreen 美商哈綠科技股份有限公司台灣分公司

- As a leader, lead and manage an engineering team of 5 people above and focus on software engineering formed workflow, and promote Agile mindset, DevOps culture. leading tech sharing, writing blog posts, etc.
- Design micro-service using gRPC as communication and Consul as Service discovery to implement Decentralized exchanges(DEX) based on Chia blockchain and deployment on EKS to achieve high reliability. And collect whole business metrics for marketing analytics to continuous improvement products through Influxdb, Prometheus, and Grafana.
- Designed and implemented Node as a Service to provide information on blocks and transactions based on Chia blockchain like Infura or QuickNode. In which, system architecture to divided micro-service using Domain-Driven Design and achieve high code quality above 80% code coverage through Test-Driven Development.
- Design CI/CD pipeline based on Trunk-based development and formulate standard commit messages for our team members following and implementing the pipeline through GitHub Action to achieve the standard, efficient development, and delivery workflow.

- Design and implement on-premise Kubernetes. Use Rook-Ceph as storage to deploy devops services such as Prometheus, Grafana, Influxdb and Jenkins to kuberntes through helm.
- Use kubernetes, GCP, Spinnaker and Ansible on Jenkins to design and build CI/CD pipelines on containerized applications to achieve the goal of daily deployment. Among them, Trunk-based development is used as a software development strategy.
- Design and implement Elastic Stack as a logging system. which collects log data from Docker containers.
- Deployed a centralized monitoring environment (Grafana, Prometheus Stack, InfluxDB) which gather system metrics as well as docker run-time metrics and business metrics.
- Use golang to design and develop common entry points for all services. Use GCS as configuration storage and obtain configuration and sensitive information through entry points.

雷特遊戲有限公司Newtype Games Limited

Site Reliability Engineer

-  Design  a  self-service  website  that  provides  rights  management  (RBAC)  and  user  activity  history.  Developed  using  React  and  .Net  Core  and  deployed  to  AWS  EKS  via  Helm.
-  Design  a  service  that  provides  device  detection  and  alerting  capabilities  to  enhance  SSO  security.  Use  .net  core  console  to  develop  services  and  utilize  Kafka's  pub/sub  function  to  achieve  decoupling  between  systems.
-  Design  a  system  to  provide  records  and  query  user  authentication  records.  Use  .net  core  to  develop  RESTful  API  services  and  deploy  and  use  a  combination  of  graylog,  elasticsearch,  fluentd  to  record  audit  logs.
-  Use  Jenkins  Pipeline  and  Docker  to  improve  the  existing  ci  process  to  achieve  a  clearer  display  and  easier  debugging  of  the  ci  process.

趨勢科技股份有限公司

Software Engineer

-  Design  and  implement  a  bulletin  system.  Use  .Net  Core  to  develop  RESTful  API  and  Angular  2  develop  background  management  website,  and  send  messages  to  clients  through  RabbibMQ.
-  Design  and  implement  a  modular  futures  trading  platform  based  on  wpf  and  prism,  providing  a  trading  platform  with  customized  requirements.
-  After  researching  and  VCS  and  CI,  use  Docker  to  deploy  Gitlab.  Import  and  educate  the  development  team  to  improve  development  efficiency.

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