Overhauling the Applicant Tracking System (ATS)This involved redesigning the architecture to incorporate over one hundred APIs, more than 20 database tables, and successfully migrating hundreds of thousands of data entries. The project was multifaceted, encompassing both feature enhancements and technological upgrades.Key Features Implemented:1. Revamped job application process to enhance user experience and efficiency.2. Developed a robust email inbox mechanism to streamline communication.3. Refactored authentication protocols for improved security and user access.4. Modified pricing structures to align with market demands and business strategy.5. Advanced candidate pipeline management to facilitate better recruitment tracking.Technological Innovations:1. Integrated Elasticsearch for superior search capabilities and data indexing.2. Utilized FastAPI to build a high-performance, scalable web application.3. Employed Terraform for reliable infrastructure as code management.Revamping the Backend Tech StackIntroduced a new FastAPI server with clean architecture and Terraform to replace manual operations (clickops). Given the outdated version of Ruby on Rails (RoR) and the difficulty in finding well-maintained SDKs in the Ruby community, we integrated another Python server to address these challenges. This involved employing clean architecture and data mappers to achieve decoupling and mitigate the strong coupling associated with Active Record.Optimizing Algolia Search Engine CostsBy implementing cost-saving optimizations for the Algolia search engine, I successfully reduced expenses by approximately NT$3-4 million. Utilizing CDN rules to manage abnormal traffic and designing a better cache mechanism for optimizing legitimate usage were key components of this success.Utilizing ChatGPT for Spam Reduction and Prompt Engineering

I am a backend engineer with a track record of designing and implementing robust, scalable, and cost-effective infrastructure solutions for web applications. My core competencies include:- AWS Infrastructure: Successfully migrated the Cooby backend infrastructure from Heroku to AWS, establishing a unified management system using Terraform for streamlined administration. Designed a highly available and scalable architecture utilizing AWS ECS to ensure optimal performance and reliability. Achieved a 75.5% reduction in overall costs on AWS. - Payment Processing: Integrated Stripe to enable payment processing, including creating a user-friendly checkout system for plan upgrades and establishing a cron service to ensure consistent data syncing between Stripe and our database.- Analytics: Designed and implemented a high-performance analytics system capable of processing large volumes of data in real-time. Managed and optimized the storage and retrieval of large amounts of writing data using DynamoDB, ensuring efficient and reliable data management. Implemented Amazon Redshift to efficiently handle large-scale data aggregation and analysis, resulting in improved performance and scalability. Integrated with Cumul.io to streamline data visualization and analysis.- Leadership: Led a team consisting of one junior backend engineer and one backend intern, directing software development efforts and increasing sprint velocity.- Integration: Integrated HubSpot and Salesforce platforms to enable seamless data flow and improve the productivity of our users, leveraging serverless architecture on AWS Lambda to increase the potential for pivoting and minimizing costs.As a backend engineer, I am passionate about creating solutions that solve complex problems and improve the user experience. My experience in AWS infrastructure, payment processing, and analytics has equipped me with the skills necessary to design, develop, and deploy scalable web applications.

NFT Transaction Integration on Linebot:- Collaborated with product management and frontend teams to design and develop RESTful APIs using FastAPI to enable NFT transaction integration on Linebot.- Optimized SQL to improve API service speed and performance.Website Maintenance for HHH (https://hhh.com.tw/):- Assisted in the website redesign to enhance page speed and overall user experience, including separating frontend and backend components.- Improved image loading time and reduced database loading through the use of eventual consistency.AI Spoken Girls Weather Forecast Video Generation:- Developed an AI-based system to generate weather forecast videos featuring AI Spoken Girls.- Utilized text summarization with BERT and keyword extraction using Tf-idf for data analysis and synthesis.

I am a passionate software engineer and founder dedicated to empowering end-users, business users, and analysts to take control of their data analysis. My expertise in web crawling, Restful API development, and backend engineering enables me to support data-driven decision-making across various industries.Self-Service Business Intelligence Platform- Developed and implemented self-service BI solutions to enable end-users, business users, and analysts to perform their own data analysis.- Conducted web crawling and research to collect relevant patents and data for analysis.- Built Restful APIs using Django to streamline data access and analysis.- Implemented OCR search to facilitate data retrieval and analysis.Job Search Platform- Designed and developed a job search platform with a focus on promoting remote work opportunities in Taiwan.- Built Restful APIs using Django to support platform functionality and integration.- Conducted user research and testing to enhance platform usability and user experience.- Collaborated with cross-functional teams to ensure seamless platform integration and maintenance.Skills:Web crawling and researchRestful API development (Django)User research and testingCross-functional collaboration