• API Developments: developed over two hundred APIs for front-end and other engines to automate daily system operations, transformed unstructured data to organized and ordered data, integrated Stripe API and provided credit card and ACH charge methods for automatically charging, secured all APIs by Firebase verification and OAuth framework• Backend Management: maintained GCP App engine, compute engine, datastore and cloud functions, initiated pub sub server to process data inflows parallel, managed daily cron job dealing with the daily bank fee tickets and charging tickets• Negotiation Robot: used the changing headers and agents to perform web scraping by Selenium and Scrapy for bankaccounts after users linked them to the platform, scraped transactions and balances or the accounts, identified and replied to the bank messages related to user’s bank fees, negotiated back users’ bank fees automatically• Internal Used Dashboard: used Flask to build a dashboard for internal managements, monitors and charges, including user profile pages, bank messages pages and charging pages, connected dashboard to web automation server• User Faced Front End: designed the structures of user’s login, negotiation submission, and profile pages using vue.js

• UI/UX: constructed 12 webpages for the official website, built platform interface for photos filters, chat systems and so on, designed chat box on user page, developed chat bot which can automatically reply to user’s questions• Instagram Robots: built Instagram robots which can automatically follow and engage with specific users and contents, performed web scraping by Selenium with Scrapy for dynamic page, integrated the crawler on AWS EC2, and directly stored scraped data into MongoDB on the cloud using pymongo• Database Management: managed and maintained MongoDB, optimized the structure of the database, implemented feature engineering for large unstructured data queried from the database, computed tradability scores based on owner’s information

• Deployed content- management framework (Drupal and CiviCRM) on Linux based server and organized the website using Drupal and CiviCRM modules• Maintained the UI in HTML, CSS and JavaScript• Developed a monitoring system based on NAGIOS plugins and shell scripts to monitor both the physical cluster(CPU, memory, disk) and application clusters including processes and tasks management