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Jing-yang Peng
Backend Engineer
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Jing-yang Peng

Backend Engineer
• 5.5 years of software development experience, specializing in backend development • Over 3 years of experience in Java development, following the Clean Architecture principles • Experience with GCP, GitOps, Kubernetes, and Docker • Experience with several programming languages, including JS, Python, and Go • Open-minded and enthusiastic about learning new things and technologies, with a strong thirst for knowledge
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Cherri Tech Inc.
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Fu Jen Catholic University
Taipei City, Taiwan

Professional Background

  • Current status
    Unemployed
    Not open to opportunities
  • Profession
    Back-end Engineer
    Java Developer
    Software Engineer
  • Fields
    SaaS / Cloud Services
    Software
    Information Services
  • Work experience
    4-6 years (4-6 years relevant)
  • Management
    None
  • Skills
    Java 8
    Play Framework
    Git
    SQL
    MySQL
    JSON
    Swift
    Objective-C
    swagger
    AWS EC2
    AWS S3
    AWS API Gateway
    AWS Lambda
    AWS RDS
    JavaScript
    Docker
    HTML
    CSS
    JUnit
    iOS Application Development
    TOEIC765
    Spring Boot
    OOP
    GCP
    Kubernetes
    Helm
    DroneCI
    Flux CD
    KeystoneJS
    Redis
    Golang
    Fyne
  • Languages
    English
    Intermediate
    Chinese
    Native or Bilingual
  • Highest level of education
    Bachelor

Job search preferences

  • Desired job type
    Full-time
    Interested in working remotely
  • Desired positions
    Senior Backend Engineer, Backend Engineer, Software Engineer, Golang Developer
  • Desired work locations
    Taipei, Taiwan
  • Freelance
    Non-freelancer

Work Experience

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Senior Java Backend Engineer

Cherri Tech Inc.
Full-time
Nov 2021 - Nov 2022
1 yr 1 mo
Taipei City, Taiwan
While working at Cherri Tech, I focused on TapPay, a Payment Gateway solution. It offers multiple payment options and provides a seamless payment experience. In 2021, the product processed transactions exceeding 50 billion NTD. Here are some of the responsibilities and tasks I undertook in this role: • Developed Payment Gateway services using Spring Boot • Wrote test cases with JUnit, Mockito, and PowerMock to ensure code quality • Conducted code reviews with colleagues to maintain software quality standards • Troubleshot and resolved field issues faced by customers
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Backend Engineer

Apr 2020 - Sep 2020
6 mos
• Utilized KeystoneJS 5, Draft.js, Node.js, React.js, PostgreSQL, and GraphQL to develop customized functions in a newly upgraded CMS • Developed Python schedulers • Maintained READr service using Go and Gin • Achieved optimization of the search engine for a media website by refactoring Python data feed and using an Elasticsearch cluster • Managed CI/CD for all services using Kubernetes, Helm, Flux CD, Drone CI, and Docker • Managed GCP and Nginx configuration

Backend Engineer

Sep 2019 - Mar 2020
7 mos
Cathay United Bank (5 months): • Utilized Spring Boot to develop APIs BEANGO CO., LTD. (1 months): • Developed a RESTful API using Java, Play Framework, Apache Kafka, and Hazelcast • Set up infrastructure for the test environment, including Kafka Cluster, MongoDB Replica Set, MySQL, and Mcrouter
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Senior Backend Engineer

Oct 2017 - Oct 2018
1 yr 1 mo
• Participated in the development of various web-based B2B SaaS applications, such as Online Fitness Course Booking, POS Management, and Payment Gateway Reporting/Dashboard • Maintained a central authentication service (CAS) based on OAuth2.0 • Followed Clean Architecture principles to develop clean, readable, open-to-extend, close-to-modify, and testable modules • Worked in agile methodology during the software development life cycle (SDLC) process • Involved in data modeling and schema design, ensuring at least 3NF • Achieved optimization of API performance by using Java concurrency classes, tuning SQL statements, and refactoring • Actively participated in tracking and resolving product issues • Wrote test cases using JUnit • Technologies used include Java 8, Play framework, EC2, RDS, SES, Memcached, S3, Intellij IDEA, git, MySQL, MongoDB, Firebase, Swagger, Docker, Jenkins, JUnit, EBean, JPA, and Flyway
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Applications Engineer

Jun 2015 - Dec 2016
1 yr 7 mos
Data Management Platform: • Collaborated with the data team to design and develop RESTful serverless APIs for a real-time statistics/visualization dashboard • Utilized Node.js, Serverless Framework, AWS Lambda, AWS API Gateway, AWS RDS, and MySQL • Continuously optimized API performance with SQL tunings and Async module, resulting in an average response time reduction of at least 40% • Designed and implemented an early workflow for clickstream data collection of websites using GTM, JavaScript, and PHP Other Works: • Developed a shopping-cart application using Swift and Storyboard • Modified a slot machine game made with Cocos2d • Created simple and robust tracking SDKs in Objective-C and Swift as a proof-of-concept • Provided technical support for tracking SDKs to advertising clients • Developed web services using PHP, Laravel, and MongoDB Other Specialties: • Biweekly study subjects included ML algorithms, Kaggle competitions, SQL tuning, French, etc.
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iOS App Developer

Sep 2013 - Sep 2014
1 yr 1 mo
• Developed native iOS applications compatible with iOS 7.* using Objective-C and Storyboard. Familiar with Auto Resizing, Cocoa Touch, UIKit, GCD, and Instruments (Leaks and Allocations) • Integrated the applications with C-based filesystem and UDP/IP socket networking to perform efficient and reliable remote file access (RFA) • Improved the functionalities of a third-party C-based filesystem • Designed and implemented RESTful APIs using Java Servlet • Published two apps: WiFi@SDCF and WIFI-ShareDisk

Education

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Bachelor of Science (BS)
Computer Science & Information Engineering
2008 - 2012
3.9/4 GPA
Activities and societies
Attended and Completed Courses on: • Machine Learning • Intelligence Computing • Search Engine • Software Engineering • Image Processing Society: • Green Field Club