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Definition of Reputation Credits
沈記維 Chi Wei Shen
Software Engineer
● Software Engineer with 4+ experience in back-end development.
● Experience in several languages such as Python, Golang, Rust, Java.
● Experience Network and Web development.
● Love learning new things .
● Good logic and communication skills.
Skills
Program Languages
- Python
- Go
- Rust
- Java
Database Systems
- PostgresSQL
- TimescaleDB
- MongoDB
- Redis
- Kafka
- Druid
Tools
- Git
- Postman
- Docker
- Selenium
- FFmpeg
- Cypress
Experience
Lilee systems, Software Engineer, Feb 2021 ~ 現在
● Back-End Service Development:
- Maintained, designed, and developed robust back-end services to support various functionalities.
- Authored comprehensive development documents, and implemented unit tests to ensure code quality.
- Collaboratively proposed requirements and led the design of new features, aligning with project goals.
- Defined clear acceptance criteria for feature evaluation, and meticulously designed test cases for thorough validation.
● Development of SafeART (Terminal 3) Product:
- Design the service architecture of the central control center and database
- Utilized technologies such as Python(GraphQL), Postgres, TimescaleDB.
● Development of SafeRide Product:
- Designed and implemented APIs for real-time and historical data.
- Spearheaded the refactoring of SafeRide video functionality, overseeing VoD (Video on Demand) and event VoD operations:
- Including the design of a progress bar for chunked transfer encoding.
- Handled digital watchdog-related operations and created tools for VoD flow tracing.
- Improved error handling for full VoD functionality and utilized ffmpeg to fill in missing video segments.
- Conducted independent research on NVR systems, focusing on compatibility with IP cameras supporting the RTSP protocol:
- Clarified functional and non-functional requirements, ensuring seamless integration between the NVR and RTSP-supported IP cameras.
- Dived deep into the RTSP protocol to enhance video recording and playback functionalities.
- Optimized Reporting Service: Achieved a 91.5% reduction in data processing time for monthly reports, efficiently handling 500K records.
- Utilized technologies such as Python, Golang, Redis, Postgres, TimescaleDB, and Kafka.
- Designed and implemented APIs to access historical train data, onboard systems, locomotive assets status, and real-time dispatch information.
- Engineered background jobs for daily scheduling, providing up-to-date information on train times and real-time train status.
- Utilized technologies including Python, Redis (Pub/Sub), Postgres, and TimescaleDB to ensure efficient and reliable service.
● Team Collaboration and Contribution:
- Facilitated knowledge sharing by introducing Computer Networks concepts to team members.
- Conducted code reviews, providing constructive feedback to enhance code quality within the team.
- Collaborated in designing End-to-End (E2E) tests to ensure system functionality and reliability.
- Authored clear and concise code documentation, contributing to maintainable and understandable codebase.
● Work with Scrum
Zyxel, Software Engineer, Aug 2018 ~ Feb 2021
Responsible for the construction of the Data Service and the development and maintenance of the cloud system, "Nebula".
● Nebula:
- A network management system that integrates diverse devices including Wi-Fi access points, Ethernet switches, and security gateways. It consolidates these into a single cloud platform, offering a comprehensive solution for managing user network infrastructure.
- Developed using Python 3.6 and the Flask application framework. - Designed and developed MongoDB schema and RESTful APIs.
- Managed Nebula AP and Gateway Flex-related functionalities and configuration push settings.
● Data Service:
- A data processing system designed to manage the data from Nebula devices. Due to the vast data volume associated with Nebula, Cassandra was employed as the back-end database system.
- Technologies utilized include Rust and Cassandra.
Trend micro, Intern, Jun 2017 ~ Aug 2018
● Autotest
- Responsible for assisting P-QA in AP system testing
- Main test items: When the user connects to the Internet via Wi-Fi access points, confirm whether the system can correctly identify the currently opened application.
- Develop automated test to simulate the behavior of users browsing the web and using the APP
- Web side: Python with Selenium
- Mobile side: Python with Appium
Yuan Ze University, Institute of computer science and engineering, 2015 ~ 2018
During studies, I worked as a teaching assistant for courses such as computer network, and participated in the TaNet-Taiwan Internet Symposium and published papers.
Chien Hsin University of Science and Technology, Department of Computer Science and Information Engineering, 2009~ 2013
The main focus is on the Internet learning course, and obtain relevant certificates.
Side project
Kerberos
Development Period: 2023/08/10 - Present
Project Description: Designed and developed a Network Video Recorder (NVR) system focused on capturing video feeds from RTSP protocol-based IP cameras.
Current Progress: Still in the software design phase, but have successfully implemented the capture of RTSP data streams and preliminary video recording functionality.
Technical Details:
- Backend development in Golang with an emphasis on efficient data stream processing.
- Implemented parsing and streaming of RTSP protocol, with capability to connect to multiple IP cameras simultaneously.
- Designed video storage strategies ensuring data integrity and persistence.
Contributions:
- Led the overall system architecture design and core functionality development.
- Ensured efficient data stream processing and storage through deep insights and optimizations in Golang.
Framework: Gin
DB: PostgreSQL, MongoDB
Ticket Tracking System
Ticket Tracking System uses Spring for development (Spring boot / Spring MVC).
This system allows QA to report a bug, PM create new feature request and RD can mark a bug as resolved.
- Language: Java
- Framework: Spring boot / Spring MVC
- Template: Thymeleaf
- DB: MongoDB
Pokedex
Every Pokemon has their own properties, such as {number, name, types,evolutions}.
Now we want to build a Pokedex.
- Language: Python
- Framework: Flask
- DB: MongoDB
Cassandra-rs-driver
Create cassandra-rs-driver application rust version develop environment in build machine
- Language: Rust
- DB: Cassandra
License
- Cisco Certified Network Associate Routing and Switching / CCNA
- Red Hat Certified Engineer / RHCE
- Ethical Hacking and Countermeasures / CEHv7
- Certified Cabling Test Technician / CCTT
沈記維 Chi Wei Shen
Software Engineer
● Software Engineer with 4+ experience in back-end development.
● Experience in several languages such as Python, Golang, Rust, Java.
● Experience Network and Web development.
● Love learning new things .
● Good logic and communication skills.
Skills
Program Languages
- Python
- Go
- Rust
- Java
Database Systems
- PostgresSQL
- TimescaleDB
- MongoDB
- Redis
- Kafka
- Druid
Tools
- Git
- Postman
- Docker
- Selenium
- FFmpeg
- Cypress
Experience
Lilee systems, Software Engineer, Feb 2021 ~ 現在
● Back-End Service Development:
- Maintained, designed, and developed robust back-end services to support various functionalities.
- Authored comprehensive development documents, and implemented unit tests to ensure code quality.
- Collaboratively proposed requirements and led the design of new features, aligning with project goals.
- Defined clear acceptance criteria for feature evaluation, and meticulously designed test cases for thorough validation.
● Development of SafeART (Terminal 3) Product:
- Design the service architecture of the central control center and database
- Utilized technologies such as Python(GraphQL), Postgres, TimescaleDB.
● Development of SafeRide Product:
- Designed and implemented APIs for real-time and historical data.
- Spearheaded the refactoring of SafeRide video functionality, overseeing VoD (Video on Demand) and event VoD operations:
- Including the design of a progress bar for chunked transfer encoding.
- Handled digital watchdog-related operations and created tools for VoD flow tracing.
- Improved error handling for full VoD functionality and utilized ffmpeg to fill in missing video segments.
- Conducted independent research on NVR systems, focusing on compatibility with IP cameras supporting the RTSP protocol:
- Clarified functional and non-functional requirements, ensuring seamless integration between the NVR and RTSP-supported IP cameras.
- Dived deep into the RTSP protocol to enhance video recording and playback functionalities.
- Optimized Reporting Service: Achieved a 91.5% reduction in data processing time for monthly reports, efficiently handling 500K records.
- Utilized technologies such as Python, Golang, Redis, Postgres, TimescaleDB, and Kafka.
- Designed and implemented APIs to access historical train data, onboard systems, locomotive assets status, and real-time dispatch information.
- Engineered background jobs for daily scheduling, providing up-to-date information on train times and real-time train status.
- Utilized technologies including Python, Redis (Pub/Sub), Postgres, and TimescaleDB to ensure efficient and reliable service.
● Team Collaboration and Contribution:
- Facilitated knowledge sharing by introducing Computer Networks concepts to team members.
- Conducted code reviews, providing constructive feedback to enhance code quality within the team.
- Collaborated in designing End-to-End (E2E) tests to ensure system functionality and reliability.
- Authored clear and concise code documentation, contributing to maintainable and understandable codebase.
● Work with Scrum
Zyxel, Software Engineer, Aug 2018 ~ Feb 2021
Responsible for the construction of the Data Service and the development and maintenance of the cloud system, "Nebula".
● Nebula:
- A network management system that integrates diverse devices including Wi-Fi access points, Ethernet switches, and security gateways. It consolidates these into a single cloud platform, offering a comprehensive solution for managing user network infrastructure.
- Developed using Python 3.6 and the Flask application framework. - Designed and developed MongoDB schema and RESTful APIs.
- Managed Nebula AP and Gateway Flex-related functionalities and configuration push settings.
● Data Service:
- A data processing system designed to manage the data from Nebula devices. Due to the vast data volume associated with Nebula, Cassandra was employed as the back-end database system.
- Technologies utilized include Rust and Cassandra.
Trend micro, Intern, Jun 2017 ~ Aug 2018
● Autotest
- Responsible for assisting P-QA in AP system testing
- Main test items: When the user connects to the Internet via Wi-Fi access points, confirm whether the system can correctly identify the currently opened application.
- Develop automated test to simulate the behavior of users browsing the web and using the APP
- Web side: Python with Selenium
- Mobile side: Python with Appium
Yuan Ze University, Institute of computer science and engineering, 2015 ~ 2018
During studies, I worked as a teaching assistant for courses such as computer network, and participated in the TaNet-Taiwan Internet Symposium and published papers.
Chien Hsin University of Science and Technology, Department of Computer Science and Information Engineering, 2009~ 2013
The main focus is on the Internet learning course, and obtain relevant certificates.
Side project
Kerberos
Development Period: 2023/08/10 - Present
Project Description: Designed and developed a Network Video Recorder (NVR) system focused on capturing video feeds from RTSP protocol-based IP cameras.
Current Progress: Still in the software design phase, but have successfully implemented the capture of RTSP data streams and preliminary video recording functionality.
Technical Details:
- Backend development in Golang with an emphasis on efficient data stream processing.
- Implemented parsing and streaming of RTSP protocol, with capability to connect to multiple IP cameras simultaneously.
- Designed video storage strategies ensuring data integrity and persistence.
Contributions:
- Led the overall system architecture design and core functionality development.
- Ensured efficient data stream processing and storage through deep insights and optimizations in Golang.
Framework: Gin
DB: PostgreSQL, MongoDB
Ticket Tracking System
Ticket Tracking System uses Spring for development (Spring boot / Spring MVC).
This system allows QA to report a bug, PM create new feature request and RD can mark a bug as resolved.
- Language: Java
- Framework: Spring boot / Spring MVC
- Template: Thymeleaf
- DB: MongoDB
Pokedex
Every Pokemon has their own properties, such as {number, name, types,evolutions}.
Now we want to build a Pokedex.
- Language: Python
- Framework: Flask
- DB: MongoDB
Cassandra-rs-driver
Create cassandra-rs-driver application rust version develop environment in build machine
- Language: Rust
- DB: Cassandra
License
- Cisco Certified Network Associate Routing and Switching / CCNA
- Red Hat Certified Engineer / RHCE
- Ethical Hacking and Countermeasures / CEHv7
- Certified Cabling Test Technician / CCTT