Avatar of 鄭晉丞.

鄭晉丞

Technical Lead
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.
Logo of Hashgreen 美商哈綠科技股份有限公司台灣分公司.
Hashgreen 美商哈綠科技股份有限公司台灣分公司
Logo of 國立台中科技大學.
國立台中科技大學
Taipei City, Taiwan

Skills

Golang Backend
Site Reliability Engineer

Languages

Chinese
Native or Bilingual
English
Beginner

Work experiences

Logo of Hashgreen 美商哈綠科技股份有限公司台灣分公司.

Technical Lead

Hashgreen 美商哈綠科技股份有限公司台灣分公司
Full-time

Sep 2021 ~ Present
- 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.
Logo of 雷特遊戲有限公司Newtype Games Limited.

Site Reliability Engineer

雷特遊戲有限公司Newtype Games Limited
Full-time

Jun 2020 ~ Feb 2021
9 mos
- 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.
Logo of 趨勢科技股份有限公司.

Software Engineer

趨勢科技股份有限公司
Contract

Oct 2019 ~ Mar 2020
6 mos
- 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.

專案襄理

統一期貨股份有限公司

Sep 2016 ~ Apr 2019
2 yrs 8 mos
- 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.

Educations

Logo of 國立台中科技大學.

國立台中科技大學

Master’s Degree
資訊工程所

2014 - 2016
Logo of 國立台中科技大學.

國立台中科技大學

Bachelor’s Degree
資訊工程系

2010 - 2014
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