CAUCSE/CAUSW_backend
Jul 2025 – Sep 2025
3 Months active
Languages Used
JavaSQLKotlin
Technical Skills
Backend DevelopmentDatabase ManagementJPAJSoupJUnitSpring Boot
hanjk0816
PROFILE
Hanjk0816
Over three months, Han JaeKwon enhanced the CAUCSE/CAUSW_backend repository by building and refining backend systems for user management, content crawling, and data integrity. He implemented hash-based update detection and automated notice transfers to streamline the Software Department’s announcement workflow, using Java, Spring Boot, and JPA. His work included developing a user reporting system with safeguards, improving account lifecycle management, and introducing robust account recovery flows. Han also delivered image URL normalization and attribute mapping in the JsoupCrawler, leveraging Java Streams and centralized constants to improve maintainability, security, and reliability across the backend’s data processing and web scraping pipelines.
Overall Statistics
Feature vs Bugs
86%Features
Repository Contributions
15Total
Bugs
1
Commits
15
Features
6
Lines of code
5,662
Activity Months3
Your Network
1018 people
Work History
September 2025
3 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for CAUSW_backend: Delivered a robust image URL normalization and image attribute mapping feature in JsoupCrawler, enhancing reliability, security, and maintainability of image loading in crawled content. Refactored image processing to direct Element handling and adopted Java Streams with centralized constants to improve readability and performance across the crawler pipeline. This work lays groundwork for consistent image data extraction and reuse across future crawlers, reducing maintenance overhead and risk of broken images.
3 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for CAUSW_backend: Delivered a robust image URL normalization and image attribute mapping feature in JsoupCrawler, enhancing reliability, security, and maintainability of image loading in crawled content. Refactored image processing to direct Element handling and adopted Java Streams with centralized constants to improve readability and performance across the crawler pipeline. This work lays groundwork for consistent image data extraction and reuse across future crawlers, reducing maintenance overhead and risk of broken images.
September 2025
August 2025
11 Commits • 4 Features
Aug 1, 2025CAUSW_backend – August 2025: End-to-end feature delivery and data-quality improvements across user reporting, account lifecycle, and career history, with a focus on abuse prevention, recovery flows, and data integrity. Implemented API, database migrations, tests, and Swagger updates to support robust operations and business value.
August 2025
11 Commits • 4 Features
Aug 1, 2025CAUSW_backend – August 2025: End-to-end feature delivery and data-quality improvements across user reporting, account lifecycle, and career history, with a focus on abuse prevention, recovery flows, and data integrity. Implemented API, database migrations, tests, and Swagger updates to support robust operations and business value.
July 2025
1 Commits • 1 Features
Jul 1, 2025July 2025—CAUSW_backend: Delivered Hash-based Update Detection for the Software Department Notices Crawling System, abstracted the crawl file structure, refactored content saving methods, and automated transfer of crawled notices to the Software Department Announcements board. Also fixed a crawling error (commit 8c2de74e6beb595e7cb2fb30d321efbc1f048ab6). These changes improve data freshness, reliability, and accessibility while enhancing maintainability and the overall notices workflow.
1 Commits • 1 Features
Jul 1, 2025July 2025—CAUSW_backend: Delivered Hash-based Update Detection for the Software Department Notices Crawling System, abstracted the crawl file structure, refactored content saving methods, and automated transfer of crawled notices to the Software Department Announcements board. Also fixed a crawling error (commit 8c2de74e6beb595e7cb2fb30d321efbc1f048ab6). These changes improve data freshness, reliability, and accessibility while enhancing maintainability and the overall notices workflow.
July 2025
Activity
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Quality Metrics
Correctness87.4%
Maintainability84.0%
Architecture81.4%
Performance85.2%
AI Usage21.4%
Skills & Technologies
Programming Languages
JavaKotlinSQL
Technical Skills
API DevelopmentBackend DevelopmentConstant ManagementDatabase DesignDatabase ManagementDate ValidationError HandlingFile HandlingFlywayHTML ParsingJPAJSoupJUnitJavaJava Development
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