Hui-Xuan Chang (張暉軒)
A self-taught programmer since April 2019.
Senior Backend Engineer
TAIPEI, TW
[email protected]
www.linkedin.com/in/randallchang
Department of Energy & Refrigerating Air-Conditioning Engineering,
National Taipei University of Technology, 2012 ~ 2017
SUMMARY
- Over 4 years long experience of software development
- Able to design and implement of large scale system architecture
- Able to be a team player and build a team with each colleague
- Know well data structures and algorithms
- Enthusiastic and able to learn new skills on my own
- Strong logical thinking ability and independent thinking ability to solve problems
Skills
Service
- Version Control Systems: Git
- Relational Databases: MySQL, PostgreSQL
- NoSQL databases: MongoDB
- Message Brokers: RabbitMQ, Kafka
- Caching: Redis, CDN
- Testing: Integration Testing, Unit Testing
- CI/CD: Jenkins, GitLab CI
- Containerization: Docker, Kubernetes (Infrastructure as Code)
- Web Server: Nginx
- Cloud: AWS
- Monitoring: Prometheus, Grafana
- Language: Java, Golang, JavaScript, Python
Software Design
- APIs: REST, SOAP, gRPC, GraphQL, WebSocket
- Security: OAuth, JWT, MD5, SHA, HTTPS, SSL/TLS
- Software Design and Architecture: Clean Code Principles, OOP, Functional Programming
- Design Principles: SOLID, DRY, GoF Design Patterns, Microservices, TDD
Framework
- Gin
- Gorm
- cobra
- Spring boot
- Spring Data
- Spring Cloud
- Spring Security
- Spring MVC
- Spring WebFlux
- Spring AOP
- MyBatis
- Mockito
Experience
香港商六度科技有限公司
Onedegree HK, Senior Backend Engineer, Nov 2023 ~ Present
街口電子支付股份有限公司
JKOPAY Co. Ltd, Senior Backend Engineer and Group Lead, Apr 2023 ~ Oct 2023
- As a group leader, managing a team(3-4 member).
- Developed and refactored referral code system service to achieve referral campaigns among users.
- Designed and developed an aggregator system service to integrate multiple services for the APP.
- Refactored several existed service to improve their performance, scalability and reduce coupling.
- Designed and refactored near-by service by ElasticSearch.
- Designed and developed commandline tools for CI/CD by Golang with Cobra framework.
奕兆有限公司
FUNPODIUM, Senior Java Backend Developer, Apr 2022 ~ Apr 2023
- Developed and refactored deposit-withdraw match system service to achieve payment between users.
- Designed and developed an instant message system service.
- Refactored several existed service to improve their performance, scalability and reduce coupling.
- Studied and designed methodology to improve team workflow.
MEXC加密貨幣交易所
MEXC Global, Software Engineer, Oct 2021 ~ Apr 2022
- Developed agent system service to achieve referral commission function.
- Designed architecture to develop single sign-on server for backstage services.
- As a group leader, able to lead group members working together at the same time to enhance efficiency of development energy.
康舒科技股份有限公司
AcBel Polytech Inc., Software Engineer, May 2020 ~ Aug 2021
- Brought in prometheus, grafana and cadvisor to implement monitor system for containers.
- Used docker so projects can run and be deployed as containers.
- Used gitLab-ci/cd so there is no need to deploy and run liquibase (scheme update) manually anymore.
- Designed a new git workflow to improve version control process.
- Used spring scheduling to replace using crontab with shell scripts to decrease process number.
- Brought in parameterized test in unit test to decrease function number.
- Developed Enterprise Information Portal of Acbel, including system architecture design, software development, deployment and maintenance.
- Developed and maintained tai-power IoT System (smart meter).
