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Senior Backend Developer @傑泰軟體開發股份有限公司
2020 ~ Present
軟體工程師
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JavaScript
Java
SQL
Employed
Open to opportunities
Full-time / Interested in working remotely
6-10 years
銘傳大學
電子工程學系
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Back End Developer @Seneca ESG
2023 ~ Present
Senior Java Engineer
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JAVA
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Spring Boot
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6-10 years
National Central University
Communication Engineering
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Past
Software Developer @Medical Park West
2019 ~ 2021
software developer
More than one year
Java database Application that serves as a backup for employee and patient information. Implemented a SQL database server to save patient's and employee's information. Provided leadership in employee's login, bugs issues and general upgrades /maintenance FebruaryJuly 2021 Software Developer • Southwestern Oklahoma state University Built web applications using React, Angular, javascript, HTML, CSS,JavaScript Implemented new programs in C#, Java & Python to test the complexity of the computer system. Analytical Research with the Oklahoma Super Computing Team. MaySeptember 2018 Software Developer • Island Power plant Designed and implemented a Java Web application,streamlining
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6-10 years
Southwestern Oklahoma state University
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Yi-Chan Kao (高翊展) 工程師的身手,教師的性格,演員的靈魂 「在什麼樣的場合,做什麼樣的自己。」 喜愛接受挑戰、尋求不同的刺激,平常興趣是旅遊、戲劇、遊戲、音樂 三年 Java Web Application 與 EIP (Enterprise Information Portal) 開發經歷 工作之餘也與友人從事獨立遊戲開發與創立劇團 kevingyc@gmail
AWS
Java
Employed
Not open to opportunities
Interested in working remotely
4-6 years
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Offline
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Backend Developer @InSynerger Technology Co., Ltd.
2018 ~ 2021
Senior Backend Developer
Within one month
HsiangHao Kang Senior Backend Developer 城市,TW [email protected] 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, 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
JAVA
Spring Boot
Spring Framework
Full-time / Not interested in working remotely
4-6 years
National Taiwan University of Science and Technology
Information management, Computer Vision Lab
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Senior Consultant @NTT Data
2022 ~ Present
Within one year
SUSE Linux Enterprise Server
Redhat Linux
Azure Cloud Services
Full-time / Interested in working remotely
6-10 years
Goverment Higher Secondary School
Computer science
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Lead Software Developer @Persistent Systems
2022 ~ Present
Within two months
Subham Choudhury Senior Application developer IBM Bengaluru, Karnataka , India Email: [email protected]/ Ph no:https://www.linkedin.com/in/subham-choudhury-ab4a0316b/ Dynamic and innovative software developer with over 6 years of hands-on experience in writing robust and efficient code solutions. Worked in the complete software development life cycle (SDLC) and successfully contributed to the analysis, design, development, code review, testing, implementation, and maintenance of enterprise-level web applications utilizing Java/Java EE technologies. I am driven by a passion for usability and performance enhancements
java
SQL
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4-6 years
VIT-Vellore
Computer Science
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Past
Frontend Web Developer @RadIran-Group | rad-iran.com
2018 ~ 2021
java developer
Within one month
Kiarash shamaei Senior Java Developer Tehran, Tehran Province, Iran Senior Java Developer with 10 years of progressive experience in the IT industry, involved in complete SDLC including analysis, design, development, testing, implementation, support and maintenance of enterprise-level web applications using Java/Java EE/Jakarta EE and Spring technologies. Sound knowledge in Banking with leading clients including BLU Bank,Tara360 and etc. as a Sr Java Developer . Committed to delivering high-quality and efficient solutions for complex software development projects . https://medium.com/@kiarash.shamai iKiarash.shamaII
java
Javascript(ES6)
Kafka with Spring Boot
Unemployed
Open to opportunities
Full-time / Interested in working remotely
6-10 years
University of Tehran
Entrepreneurship/Entrepreneurial Studies
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Senior Project Team Leader @萬海航運
2017 ~ Present
Within two months
使用JBoss Cluster, 使用Apache處理Load balancing(mod_cluster) 使用Git進行版本控制, 使用Maven Project, 部署環境為Linux 實作項目: • Private Cloud 管理系統 • SNMP設備監控模組 • JBoss Application Administration Java Web Developer • Frog Jump 2011年10月年9月 · 1 年 Java Web開發,相關技術 : Play Framework專案, Spring/Struts/Hibernate專案, 撰寫service層封裝商業邏輯, 撰寫Dao封裝
Employed
Open to opportunities
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10-15 years
Tamkang University
Mechanical and Electro-Mechanical Engineering
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Java Backend Engineer @Fenice Tech
2020 ~ Present
Senior Engineer
Within one month
com https://github.com/force1585 I have years of experience as an IT professional and in the software industry, specializing in project development for various industries. I possess professional knowledge in the IT industry, including automation, computer vision, and web services. Skills Programming Language Java Javascript Python Web Spring Framework Node.js RESTful API Server Google Cloud Platform Microsoft Azure Linux Database RMDBS ClickHouse Redis Automation Test JEST, JUnit Appium Selenium Others Line Messaging / Bot MQTT Web Crawler Career Fenice Tech, Java Backend Engineer, DEC 2020 ~ Present Develop web applications with Java
Java
Python
MySQL
Employed
Full-time / Remote Only
6-10 years
National Kaohsiung University of Applied Sciences
Industrial Engineering

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Within one month
web backend engineer
InSynerger Technology Co., Ltd.
2018 ~ 2021
台灣台北縣
Professional Background
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Professions
Back-end Engineer
Fields of Employment
Software
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4-6 years
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JAVA
Spring Boot
Spring Framework
Spring Data
spring cloud
Junits/Mockito
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Linux
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Senior Backend Developer
Job types
Full-time
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台灣台北
Remote
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Educations
School
National Taiwan University of Science and Technology
Major
Information management, Computer Vision Lab
Print
Ooopdhgxmh0fof21jcyp

HsiangHao Kang   

Senior Backend Developer
城市,TW
[email protected]

+886 9300-18522

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.
Global Open-API data migration from MongoDB to MySQL
  • 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.
Resume
Profile
Ooopdhgxmh0fof21jcyp

HsiangHao Kang   

Senior Backend Developer
城市,TW
[email protected]

+886 9300-18522

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.
Global Open-API data migration from MongoDB to MySQL
  • 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.