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Jing-yang Peng
- Over 6.5 years of experience in backend development, with a focus on Go and Java.
- Specialized in designing scalable, maintainable, and efficient systems, adhering to Clean Architecture principles to ensure long-term code quality.
- Extensive expertise in API design, system integration, and solving complex backend challenges.
- Adept at transforming intricate problems into streamlined solutions that align with both technical requirements and business goals.
- Passionate about continuous learning and exploring emerging technologies to deliver systems that make a meaningful impact.
Work Experience
One Step Technology Ltd. Co., Go Backend Engineer, Dec 2023 ~ Nov 2024
As the sole backend developer for www.onestep.place, I leverage Go, Gin, GORM, MySQL, and Redis to design maintainable and efficient backend systems. My work focuses on clean architecture, data modeling, reliable data handling, and seamless integration with external services.
Key Responsibilities and Achievements
• Managed backend development, including architecture design, feature implementation, and system maintenance.
• Implemented Redis-based indexing and MySQL full-text search to support precise keyword searches with efficient pagination and filtering.
• Refactored two major systems following Clean Architecture principles to enhance modularity, testability, and long-term maintainability.
• Integrated payment systems and implemented a robust refund mechanism for secure transactions.
• Built a Google Calendar synchronization system using Redis queues and long polling for reliable data exports.
• Developed a hierarchical tagging system to support intuitive content categorization and filtering.
• Ensured high code quality through comprehensive unit testing using testing, mockery, and go-sqlmock.
• Enhanced development efficiency by utilizing GitHub Copilot.
Cherri Tech Inc., Senior Java Developer, Nov 2021 ~ Nov 2022
TapPay is a leading Payment Gateway solution offering multiple payment options and a seamless user experience. In 2021, the platform processed transactions exceeding 50 billion NTD, solidifying its position as a reliable choice for businesses.
Key Responsibilities and Achievements
• Developed and maintained Payment Gateway services using Spring Boot to support diverse payment methods and ensure smooth transaction processing.
• Improved code quality by writing comprehensive test cases with JUnit, Mockito, and PowerMock, reducing production issues and enhancing maintainability.
• Conducted peer code reviews to ensure adherence to high software quality standards across the team.
• Troubleshot and resolved customer-reported issues, ensuring minimal service disruption and improved satisfaction.
• Collaborated with cross-functional teams to deliver robust payment solutions aligned with business requirements.
Mirror Media, Backend Engineer, Apr 2020 ~ Sep 2020
• Developed custom CMS features using KeystoneJS 5, Draft.js, Node.js, React.js, PostgreSQL, and GraphQL, improving content management efficiency.
• Refactored Python data feeds and integrated Elasticsearch clusters to enhance media website search performance.
• Maintained and extended backend services using Go and Gin.
• Automated data processing with Python schedulers, streamlining workflows.
• Managed CI/CD pipelines with GitOps, Kubernetes, Helm, Flux CD, Drone CI, and Docker, ensuring seamless deployments.
• Configured GCP infrastructure and Nginx to optimize resource utilization and application stability.
Hannlync Technologies Inc., Java Developer, Sep 2019 ~ Mar 2020
Cathay United Bank (5 months)
• Developed and maintained APIs using Spring Boot.
BEANGO CO., LTD. (1 month)
• Developed a RESTful API for inter-service communication using Java, Play Framework, Apache Kafka, and Hazelcast.
NewPOS Tech. Corp., Senior Java Developer, Oct 2017 ~ Oct 2018
• Developed web-based B2B SaaS applications, including Online Fitness Course Booking, POS Management, and Payment Gateway Reporting/Dashboard systems.
• Maintained a Central Authentication Service (CAS) using OAuth2.0 for secure user authentication.
• Applied Clean Architecture principles to deliver maintainable and testable modules.
• Designed and optimized relational database schemas in compliance with Third Normal Form (3NF).
• Enhanced API performance through Java concurrency, SQL tuning, and code refactoring.
Technologies: Java 8, Play Framework, EC2, RDS, Memcached, S3, IntelliJ IDEA, Git, MySQL, MongoDB, Swagger, Docker, JUnit, EBean, JPA
urAD Co., Ltd., Applications Engineer, Jun 2015 ~ Dec 2016
Data Management Platform | Backend Engineer
• Developed RESTful serverless APIs for a real-time statistics dashboard using Node.js, Serverless Framework, AWS Lambda, AWS API Gateway, AWS RDS, and MySQL.
• Optimized API performance through SQL tuning and Async module implementation, reducing average response time by 40%.
• Designed an early workflow for clickstream data collection using GTM, JavaScript, and PHP, improving data accuracy.
Additional Projects
• Published a shopping-cart application built with Swift and Storyboard.
• Enhanced a slot machine game using Cocos2d, improving functionality and user experience.
• Created tracking SDKs in Objective-C and Swift, ensuring seamless integration with advertising platforms.
• Built web services with PHP, Laravel, and MongoDB.
Webi & Neti Internet Service Inc., iOS App Developer, Sep 2013 ~ Sep 2014
• Developed native iOS applications for iOS 7 using Objective-C and Storyboard, ensuring optimal performance and user experience.
• Integrated a C-based filesystem and UDP/IP networking for efficient and reliable remote file access (RFA).
• Enhanced third-party C-based filesystem functionalities to improve stability and performance.
• Designed and implemented RESTful APIs with Java Servlet to support application features.
• Published two iOS apps: WiFi@SDCF and WIFI-ShareDisk.
Skills
TOEIC765 • Go • Gin • GORM • Java • Spring Boot • Play Framework • JavaScript • Node.js • GCP • AWS • OOP • Clean Architecture • Kubernetes • Docker • Git • JSON • Linux • iOS Application Development • Swift2 • Objective-C • Redis • MySQL • MongoDB • PostgreSQL • SQL
Education
Fu Jen Catholic University, BS, Computer Science & Information Engineering, 3.92/4 GPA, 2008 ~ 2012
Attended and Completed Courses on:
- Machine Learning
- Intelligence Computing
- Search Engine
- Software Engineering
- Image Processing
Side Projects
Multi-Game Instance Bot
Jing-yang Peng
- Over 6.5 years of experience in backend development, with a focus on Go and Java.
- Specialized in designing scalable, maintainable, and efficient systems, adhering to Clean Architecture principles to ensure long-term code quality.
- Extensive expertise in API design, system integration, and solving complex backend challenges.
- Adept at transforming intricate problems into streamlined solutions that align with both technical requirements and business goals.
- Passionate about continuous learning and exploring emerging technologies to deliver systems that make a meaningful impact.
Work Experience
One Step Technology Ltd. Co., Go Backend Engineer, Dec 2023 ~ Nov 2024
As the sole backend developer for www.onestep.place, I leverage Go, Gin, GORM, MySQL, and Redis to design maintainable and efficient backend systems. My work focuses on clean architecture, data modeling, reliable data handling, and seamless integration with external services.
Key Responsibilities and Achievements
• Managed backend development, including architecture design, feature implementation, and system maintenance.
• Implemented Redis-based indexing and MySQL full-text search to support precise keyword searches with efficient pagination and filtering.
• Refactored two major systems following Clean Architecture principles to enhance modularity, testability, and long-term maintainability.
• Integrated payment systems and implemented a robust refund mechanism for secure transactions.
• Built a Google Calendar synchronization system using Redis queues and long polling for reliable data exports.
• Developed a hierarchical tagging system to support intuitive content categorization and filtering.
• Ensured high code quality through comprehensive unit testing using testing, mockery, and go-sqlmock.
• Enhanced development efficiency by utilizing GitHub Copilot.
Cherri Tech Inc., Senior Java Developer, Nov 2021 ~ Nov 2022
TapPay is a leading Payment Gateway solution offering multiple payment options and a seamless user experience. In 2021, the platform processed transactions exceeding 50 billion NTD, solidifying its position as a reliable choice for businesses.
Key Responsibilities and Achievements
• Developed and maintained Payment Gateway services using Spring Boot to support diverse payment methods and ensure smooth transaction processing.
• Improved code quality by writing comprehensive test cases with JUnit, Mockito, and PowerMock, reducing production issues and enhancing maintainability.
• Conducted peer code reviews to ensure adherence to high software quality standards across the team.
• Troubleshot and resolved customer-reported issues, ensuring minimal service disruption and improved satisfaction.
• Collaborated with cross-functional teams to deliver robust payment solutions aligned with business requirements.
Mirror Media, Backend Engineer, Apr 2020 ~ Sep 2020
• Developed custom CMS features using KeystoneJS 5, Draft.js, Node.js, React.js, PostgreSQL, and GraphQL, improving content management efficiency.
• Refactored Python data feeds and integrated Elasticsearch clusters to enhance media website search performance.
• Maintained and extended backend services using Go and Gin.
• Automated data processing with Python schedulers, streamlining workflows.
• Managed CI/CD pipelines with GitOps, Kubernetes, Helm, Flux CD, Drone CI, and Docker, ensuring seamless deployments.
• Configured GCP infrastructure and Nginx to optimize resource utilization and application stability.
Hannlync Technologies Inc., Java Developer, Sep 2019 ~ Mar 2020
Cathay United Bank (5 months)
• Developed and maintained APIs using Spring Boot.
BEANGO CO., LTD. (1 month)
• Developed a RESTful API for inter-service communication using Java, Play Framework, Apache Kafka, and Hazelcast.
NewPOS Tech. Corp., Senior Java Developer, Oct 2017 ~ Oct 2018
• Developed web-based B2B SaaS applications, including Online Fitness Course Booking, POS Management, and Payment Gateway Reporting/Dashboard systems.
• Maintained a Central Authentication Service (CAS) using OAuth2.0 for secure user authentication.
• Applied Clean Architecture principles to deliver maintainable and testable modules.
• Designed and optimized relational database schemas in compliance with Third Normal Form (3NF).
• Enhanced API performance through Java concurrency, SQL tuning, and code refactoring.
Technologies: Java 8, Play Framework, EC2, RDS, Memcached, S3, IntelliJ IDEA, Git, MySQL, MongoDB, Swagger, Docker, JUnit, EBean, JPA
urAD Co., Ltd., Applications Engineer, Jun 2015 ~ Dec 2016
Data Management Platform | Backend Engineer
• Developed RESTful serverless APIs for a real-time statistics dashboard using Node.js, Serverless Framework, AWS Lambda, AWS API Gateway, AWS RDS, and MySQL.
• Optimized API performance through SQL tuning and Async module implementation, reducing average response time by 40%.
• Designed an early workflow for clickstream data collection using GTM, JavaScript, and PHP, improving data accuracy.
Additional Projects
• Published a shopping-cart application built with Swift and Storyboard.
• Enhanced a slot machine game using Cocos2d, improving functionality and user experience.
• Created tracking SDKs in Objective-C and Swift, ensuring seamless integration with advertising platforms.
• Built web services with PHP, Laravel, and MongoDB.
Webi & Neti Internet Service Inc., iOS App Developer, Sep 2013 ~ Sep 2014
• Developed native iOS applications for iOS 7 using Objective-C and Storyboard, ensuring optimal performance and user experience.
• Integrated a C-based filesystem and UDP/IP networking for efficient and reliable remote file access (RFA).
• Enhanced third-party C-based filesystem functionalities to improve stability and performance.
• Designed and implemented RESTful APIs with Java Servlet to support application features.
• Published two iOS apps: WiFi@SDCF and WIFI-ShareDisk.
Skills
TOEIC765 • Go • Gin • GORM • Java • Spring Boot • Play Framework • JavaScript • Node.js • GCP • AWS • OOP • Clean Architecture • Kubernetes • Docker • Git • JSON • Linux • iOS Application Development • Swift2 • Objective-C • Redis • MySQL • MongoDB • PostgreSQL • SQL
Education
Fu Jen Catholic University, BS, Computer Science & Information Engineering, 3.92/4 GPA, 2008 ~ 2012
Attended and Completed Courses on:
- Machine Learning
- Intelligence Computing
- Search Engine
- Software Engineering
- Image Processing
Side Projects