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.
Hashgreen 美商哈綠科技股份有限公司台灣分公司
國立台中科技大學Taipei City, Taiwan
Professional Background
Current status
Employed・Open to opportunities
Profession
Blockchain Platform Engineer・Back-end Engineer・DevOps / System Admin
Fields
Blockchain
Work experience
4-6 years (4-6 years relevant)
Management
I've had experience in managing 5-10 people
Skills
Golang BackendSite Reliability Engineer
Languages
Chinese・Native or Bilingual
English・Beginner
Highest level of education
Master
Job search preferences
Desired job type
Full time・Remote Only
Desired positions
Software engineer
Desired work locations
台灣台北
Freelance
Non-freelancer
Work Experience
Technical Lead
Hashgreen 美商哈綠科技股份有限公司台灣分公司・Full-Time
September 2021 - Present1 yr6 mos
- 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.Software Engineer
Helios Data Inc・Full-Time
June 2021 - August 20213 mos
- Use golang and Gin framework to develop and maintain Schema control portal. This product provides scanning column, description and sample data of various databases (such as mysql, postgresql, bigquery, etc.) and presents the data, and also provides the function of rights management to different users. - Use shell script and python to develop CI/CD pipeline on Jenkins to achieve deployment and high-quality code.
Site Reliability Engineer
雷特遊戲有限公司Newtype Games Limited・Full-Time
June 2020 - February 20219 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.
Software Engineer
October 2019 - March 20206 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
September 2016 - April 20192 yrs8 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.
Education
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