Hazel Lin
Back-End Developer
Taipei, Taiwan
A software developer is always seeking innovative products and solutions.
As a lifetime self-learner, being curious about tech, languages, and fun facts, eager to build exciting tech products with open-minded teams and corporations.
Skills
Backend & Frontend Development
JavaScript, C++, Python, R
Node.js, Express, Socket.IO
HTML, Pug, CSS, jQuery
Cloud Service(AWS) & Environments
EC2, S3, ElastiCache, RDS, Auto Scaling
- Linux, Docker, NGINX
Database & Version Control
MySQL, MongoDB, Redis
Git, GitHub
Automated Testing & Others
K6, Gherkin, mocha
Lua Script, Swagger, Bootstrap
Projects
ServalRun
A developers' tool for automated tests and documents
Derived from the BDD (Behavior-Driven Development) concept, and provided an integration testing tool for non-developers
Organized test creation and execution simultaneously with Redis queue job
Designed multi-level tests and database schema with MongoDB
Constructed test CRUD operations with RESTful API pattern
Assured tests data atomicity in the database by implementing transaction operations
Executed integration testing with axios
Updated real-time test status by Redis publish/subscribe
Utilized WebSocket to update test result charts immediately with Socket.IO
Generated testable documents by compiling Gherkin
Conducted unit testing and integration testing for long-term maintainability
Short URL
A service provides conversion between long URLs and short URLs
Experimented with 3 different strategies of generating short URLs
Generated short URL by hashing long URL with MD5
Encoded ID of long URL in databases from Base10 to Base62
Created short URLs by key generator
Optimized the best combination among Amazon RDS and EC2 cloud computing service plans
Obtained the most economical solution of $2400 per month to provide 500 million URLs per month
STYLiSH
An E-commerce website combines online shopping and social media
Deployed stateless system with Amazon EC2, RDS, and ElastiCache
Applied load balancing and auto scaling to server and testing it with K6
Maintained documents with Swagger for the backend and frontend team when developing new features
Experience
Back-End Engineer • AppWorks School
Jun. 2022 - Present
- Implemented 3 rate limiter algorithms defending from DDoS attacks including Fixed Window, Sliding Logs, and Sliding Window Counter
- Collaborated with a frontend team in Scrum framework with Trello and Notion
- Analyzed the best combination of cloud computing plans and highest available loading for URL shortener service
General Education Center Teaching Assistant • National Chengchi University
Sep. 2020 - Jun. 2022
- Deployed file upload website by utilizing Flask framework and Google Workspace cloud service
- Planned events for 100 student participants and communicating with related staff and associations
Research Assistant • Foundation of Urban Development and Environmental Education
Sep. 2017 - Feb. 2019
- Made proposals and executed 8-10 workshops for 50 participants per year as a facilitator
- Designed questionnaires measuring customer satisfaction for local industry area customer center
Education
2020 - 2022
National Chengchi University
Master of Arts in Urban Planning
2019 - 2020
Meiji University
Exchange Student in Commerce School
2015 - 2020
National Chengchi University
Urban Planning
Additional Skills
Others
Experience in Geographic Information Systems (GIS)
Language
- Native: Mandarin
- Proficient: English (TOEIC 825), Japanese (JLPT N1)
