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4-6 years
6-10 years
10-15 years
More than 15 years
JAVA後端軟體工程師 @UBN2021 ~ 2022
・
程式設計師
Within one month
可視化工具去監控我們的系統，研究使用videoJs 去監測學生觀看影片情形，並製作成報表去統計學生學習情形等等 專案經歷 Spring boot 交流版 採用 Java Spring Boot 框架 + MySQL資料庫 + Semantic UI前端UI框架，，分析功能 、設計前端頁面 、 開發動態前端頁面 、 集成使用的 Js 、構
Employed
・
Not open to opportunities
Full-time / Interested in working remotely
4-6 years
龍華科技大學
・
電機
Past
全端工程師 @NEC (台灣恩益禧股份有限公司)2023 ~ 2024
・
Web全端工程師
Within one month
財會系統，為Web財會後台系統，該系統為⽤戶提供了顧客主檔、發票、⽇帳、⽉帳、獎⾦...等等模組 後台專案前端以.Net MVC Framework搭配AngularJS作為框架。使⽤Entity Framework對Sql Server做資料存取 .Net Framework Windows Form，以Entity Framework獲取資料進⾏發票機列印 開發.Net Framework WebAPI，供內部系統串
Unemployed
・
Ready to interview
Full-time / Remote Only
6-10 years
龍華科技大學
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Definition of Reputation Credits
Technical Skills
Specialized knowledge and expertise within the profession (e.g. familiar with SEO and use of related tools).
Problem-Solving
Ability to identify, analyze, and prepare solutions to problems.
Adaptability
Ability to navigate unexpected situations; and keep up with shifting priorities, projects, clients, and technology.
Communication
Ability to convey information effectively and is willing to give and receive feedback.
Time Management
Ability to prioritize tasks based on importance; and have them completed within the assigned timeline.
Teamwork
Ability to work cooperatively, communicate effectively, and anticipate each other's demands, resulting in coordinated collective action.
Leadership
Ability to coach, guide, and inspire a team to achieve a shared goal or outcome effectively.
Professional Background
Current status
Job Search Progress
Professions
Back-end Engineer
Fields of Employment
Software
Work experience
4-6 years
Management
Skills
Languages
English
・
Fluent
Japanese
・
Beginner
Job search preferences
Positions
Senior Backend Developer
Job types
Full-time
Locations
台灣台北
Remote
Not interested in working remotely
Freelance
Educations
School
National Taiwan University of Science and Technology
Major
Information management, Computer Vision Lab
Education
Taiwan University of Science and Technology（MS）Information management & Computer Vision Lab, Sep 2012 ~ July 2014
National Kaohsiung University of Applied Sciences（BS）Electronic Engineering, Sep 2008 ~ Jul 2012
Skill
Web Application:
Java/J2EE, Spring Boot, Spring5
SQL: MySQL, PostgreSQL, MongoDB
MessageQueue: RabbitMQ
Others: Docker, Jenkins, JUnit5, Spring Batch, Microservices, JMeter
TOEIC Listening & Reading Test ( Sept. 2019)
740 , Listening: 415 , Reading: 325
Experience
Rakuten Group, Inc. Backend Developer, July 2021 ~Present
Develop and maintain Item and shipment APIs (Item/Product/Inventory/Category/ImageResources/Shipping/FamilyMart/..) and handle DevOps for Rakuten Taiwan projects, collaborating with team members from Japan, China, and India.
FileManagement API Rakuten Cloud Object Storage and DB migration
- Refactor and migrate the file management api from NAS to Rakuten Cloud object storage.
- Develop the file migration tool with a thread pool to simultaneously migrate over 3 terabytes of files for all of
Rakuten TW's shops. - Initiate a discussion with the system engineer and backend leader to plan the file migration process, ensuring zero downtime and no data loss.
- Reduce the annual budget to approximately one-tenth of its current amount.
- Memory profiling with JMS and running stress tests with JMeter.
FamilyMart B2C project
- FamilyMartB2C as a new shipment option on the Rakuten e-commerce platform that empowers merchants to ship batches of products to distribution centers, ensuring faster delivery process for top merchants to ship their products.
- Design and implement a new Batch service for the new shipping method FamilyMart B2C in the Rakuten EC platform.
- Download shipping status files from FamilyMart's FTP server to update the shipping and order status on the Rakuten platform.
- Implement the deployment script for the Jenkins pipeline.
- Implement integration and unit tests to achieve a coverage rate of over 80% for quality assurance.
Resolve the database deadlock issue related to delete and re-insert operations
- Utilized SHOW ENGINE INNODB STATUS to analyze the database lock status for the READ COMMITTED transaction isolation level.
Shopping cart-revamp project
- Developed the new version Cart-API (Java and MySQL) to replace the legacy API (Ruby on Rails and NoSQL).
- Developed the Point handler business logic to calculate the Rakuten Super Point and shopper's Point Campaign.
Search Engine Feed project
- Develop the new version Search Engine Feed API (Java) to replace the legacy API (Ruby on Rails)
- Transform the data format from the relational database to search engine when the client updates shop/product/campaign information.
- Implement a full-shop feed to query all items within shops on the Rakuten platform in order to rebuild the search engine index.
- Implement a local cache for categories using a doubly tree data structure and read/write locks to retrieve tree paths instead of making repeated calls to the category API.
- Conduct a code review for colleagues and develop unit tests to achieve a test coverage rate of over 80% to ensure software quality.
- Developed data migration tool with spring-batch-partitioner
- Migrated 4 million records using multi-threading to reduce the processing time to approximately one-tenth of the original time (from 70 minutes to 7 minutes).
- Replaced the database from MongoDB with MySQL to speed up the API response time to reach 400 QPS.
InSynerger Technology Co., Ltd. Backend Developer, July 2018 ~ March 2021
Designed and implemented the SHARP Thailand IoT platform
- System Analysis and Design for SHARP Thailand's IoT application.
- Designed and implemented work order dispatch system and web-based production line dashboard application.
Designed and implemented a more light way Rule Engine System to replace the legacy system and Drools APIs
- Designed and implemented a Rule Engine using the Interpreter Pattern with postfix expressions and the Easy Rules library.
- Resolved a hierarchical and/or logic expression using stack data structure.
- Example: [(deviceA’s power > 100) and (deviceB’s current > 10)] or (deviceC’s voltage > 10).
Developed and maintained the streetlight IoT platform for Kaohsiung and Taoyuan city with 40000+ IoT devices
Developed a new Backend API to replace the legacy system from MVC Frameworks to pure APIs
- Reduced the number of database queries by over 50% compared to the legacy system.
PChome & Skype, Linktel Inc. Backend Developer, Aug 2016 ~ Nov 2017
- Developed and maintained the Skype official site purchase system.
- Refactored ten microservices of the Skype official site purchase system from Struts2 to Spring Boot.
ARPlanet Digital Technology Co.,Ltd. Backend Developer, Oct 2015 ~ Aug 2016
- Developed an image retrieval API for a mobile Augmented Reality app.
Education
Taiwan University of Science and Technology（MS）Information management & Computer Vision Lab, Sep 2012 ~ July 2014
National Kaohsiung University of Applied Sciences（BS）Electronic Engineering, Sep 2008 ~ Jul 2012
Skill
Web Application:
Java/J2EE, Spring Boot, Spring5
SQL: MySQL, PostgreSQL, MongoDB
MessageQueue: RabbitMQ
Others: Docker, Jenkins, JUnit5, Spring Batch, Microservices, JMeter
TOEIC Listening & Reading Test ( Sept. 2019)
740 , Listening: 415 , Reading: 325
Experience
Rakuten Group, Inc. Backend Developer, July 2021 ~Present
Develop and maintain Item and shipment APIs (Item/Product/Inventory/Category/ImageResources/Shipping/FamilyMart/..) and handle DevOps for Rakuten Taiwan projects, collaborating with team members from Japan, China, and India.
FileManagement API Rakuten Cloud Object Storage and DB migration
- Refactor and migrate the file management api from NAS to Rakuten Cloud object storage.
- Develop the file migration tool with a thread pool to simultaneously migrate over 3 terabytes of files for all of
Rakuten TW's shops. - Initiate a discussion with the system engineer and backend leader to plan the file migration process, ensuring zero downtime and no data loss.
- Reduce the annual budget to approximately one-tenth of its current amount.
- Memory profiling with JMS and running stress tests with JMeter.
FamilyMart B2C project
- FamilyMartB2C as a new shipment option on the Rakuten e-commerce platform that empowers merchants to ship batches of products to distribution centers, ensuring faster delivery process for top merchants to ship their products.
- Design and implement a new Batch service for the new shipping method FamilyMart B2C in the Rakuten EC platform.
- Download shipping status files from FamilyMart's FTP server to update the shipping and order status on the Rakuten platform.
- Implement the deployment script for the Jenkins pipeline.
- Implement integration and unit tests to achieve a coverage rate of over 80% for quality assurance.
Resolve the database deadlock issue related to delete and re-insert operations
- Utilized SHOW ENGINE INNODB STATUS to analyze the database lock status for the READ COMMITTED transaction isolation level.
Shopping cart-revamp project
- Developed the new version Cart-API (Java and MySQL) to replace the legacy API (Ruby on Rails and NoSQL).
- Developed the Point handler business logic to calculate the Rakuten Super Point and shopper's Point Campaign.
Search Engine Feed project
- Develop the new version Search Engine Feed API (Java) to replace the legacy API (Ruby on Rails)
- Transform the data format from the relational database to search engine when the client updates shop/product/campaign information.
- Implement a full-shop feed to query all items within shops on the Rakuten platform in order to rebuild the search engine index.
- Implement a local cache for categories using a doubly tree data structure and read/write locks to retrieve tree paths instead of making repeated calls to the category API.
- Conduct a code review for colleagues and develop unit tests to achieve a test coverage rate of over 80% to ensure software quality.
- Developed data migration tool with spring-batch-partitioner
- Migrated 4 million records using multi-threading to reduce the processing time to approximately one-tenth of the original time (from 70 minutes to 7 minutes).
- Replaced the database from MongoDB with MySQL to speed up the API response time to reach 400 QPS.
InSynerger Technology Co., Ltd. Backend Developer, July 2018 ~ March 2021
Designed and implemented the SHARP Thailand IoT platform
- System Analysis and Design for SHARP Thailand's IoT application.
- Designed and implemented work order dispatch system and web-based production line dashboard application.
Designed and implemented a more light way Rule Engine System to replace the legacy system and Drools APIs
- Designed and implemented a Rule Engine using the Interpreter Pattern with postfix expressions and the Easy Rules library.
- Resolved a hierarchical and/or logic expression using stack data structure.
- Example: [(deviceA’s power > 100) and (deviceB’s current > 10)] or (deviceC’s voltage > 10).
Developed and maintained the streetlight IoT platform for Kaohsiung and Taoyuan city with 40000+ IoT devices
Developed a new Backend API to replace the legacy system from MVC Frameworks to pure APIs
- Reduced the number of database queries by over 50% compared to the legacy system.
PChome & Skype, Linktel Inc. Backend Developer, Aug 2016 ~ Nov 2017
- Developed and maintained the Skype official site purchase system.
- Refactored ten microservices of the Skype official site purchase system from Struts2 to Spring Boot.
ARPlanet Digital Technology Co.,Ltd. Backend Developer, Oct 2015 ~ Aug 2016
- Developed an image retrieval API for a mobile Augmented Reality app.