Cheng Yu Hsuan Sr. Backend Engineer Taipei, Taiwan • 7+ years experience as a Backend engineer and Cloud Architect. 。 1y+ as a Sr. Backend in Buyandship (Now) 。 1y+ as a Freelancer 。 2.5y as a Sr. Backend / Cloud Architect in Jetshop BNPL FinTech 。 3y as a Co-Founder / CTO in Insighteye • Proficient in Python, Node.js, SQL / DB schema design and Cloud deployment -- Being enthusiastic about solving complex problems :) Youtube Channel: https://www.youtube.com/@yuHsuanCode [email protected] Professional Experience

publication at Springer reference series B.B.A. in Information Management, Tam-Kang University, 2012 Varsity team member of InnoServe Awards 2012 Participated in the CO-OP program with Hwacom Systems Inc.. Three-term committee member of Religious Students Association of Taiwan Skills Programming NodeJS Design Pattern & OOP implementation Performance diagnosis & improvement Service API design (RESTful & GraphQL) Unit & integration testing Third-party services integration (Hubspot, SurveyMonkey, etc.) ReactJS Reusable UI component design Context data flow design User experience enhancement SQL / NoSQL Database schema design & performance enhancement MySQL / PostgreSQL MongoDB / Redis Languages

Integration with LLM using RAG: Proficient in integrating applications with Large Scale Language Model (LLM) using Retrieval-Augmented Generation (RAG), for enhanced user experiences. Web and Mobile App Development: Skilled in developing robust web and mobile applications that deliver seamless user experiences and drive business growth. Cloud Architecture Design: Experienced in designing cloud-native architectures, focusing on scalability, resilience, and efficiency. Proficient in utilizing Kubernetes and Prometheus for orchestrating and monitoring distributed systems. Database Optimization: Adept at optimizing both SQL and NoSQL databases, including schema design, sharding, and data migration, to ensure optimal performance and reliability

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 Spring. Design database schemas and develop SQL. Utilize ClickHouse for data statistics. Using Redis for distributed system synchronization and cache. Integrate APIs for fiat and crypto transactions. Plan production development, conduct code review, debug and refactor. Gets-Info, CTO , OCT 2019 ~ NOV 2020 Developed web applications

利用Django建構一個網站，並部屬在雲端隨時可以查看程式開發筆記。 使用技術：Django、Vue.js、Herou、SCSS。 技能 Python Flask、Django SQLAlchemy ORM OOP Cloud AWS GCP ETL Database Schema Design Stored Procedure DynamoDB Airflow DBT Web Crawler Requests Selenium 自傳 過去經驗 我畢業於台北商業技術學院(現已升格為台北商業大學)，主修國際貿易，畢業後進

C++, Android, OpenCV, FastCV) 大樓用電量資料處理 (Python, MySQL, Elasticsearch) 分散式模型部署系統 POC (Flask, MySQL, Docker) Responsible for requirement analysis, definition, and exploration, conceptualizing the foundational system architecture, functional workflows, functional modules, and preliminary DB schema design planning, as well as system architecture planning and development schedule planning. Based on the schedule planning, assign modularized requirements to team members for development and assist the team in completing development tasks. Project: Smart City - Traffic Recognition System POC (Django, Vue.j, Docker, OpenCV, Elasticsearch

Management - Serverless development to track 3rd party SLA (puppeteer.js) - Azure to GCP migration, Pulumi / Terraform, dbt, BigQuery, DOMO, GitHub Actions CI/CD, Docker NovemberDecember 2020 Data Manager, Geospatial (Contractor) • Pomelo Travel - User data architect: led planning for how to organize and secure user data (PostGIS, PostgreSQL schema design) - Created GeoJSON datasets and MBTiles tilesets for interactive web and mobile apps - Frontend development (Mapbox, CSS, ES6 JavaScript, Parcel, TypeScript) JanuaryJuly 2020 Lead System Architect • UNLI - Led product development for a web-based travel planning app - Developed GIS data pipelines (PyQGIS, Python, R, SQL, API, NodeJS, React, Git