Led DataVerse's comprehensive development lifecycle, from conceptualization to deployment. Orchestrated the platform's architecture, curated the technology stack, and engineered pivotal features from the ground up. Provided adept guidance, fostering a collaborative team culture with a strong sense of ownership. Instrumental in creating critical services and guiding cross-functional teams to successful project implementation. ⦁ Effectively led the DataVerse Team in successfully launching the SaaS product on AWS Marketplace during Q1 2024. ⦁ Implemented advanced functionality, enabling users to execute intricate queries on datasets containing millions of records within milliseconds. ⦁ Optimized existing CI/CD pipelines, resulting in a remarkable 5x increase in deployment efficiency. Pioneered the implementation of an ML training system in collaboration with data scientists, empowering users to fine-tune models. ⦁ Prioritized the creation of a positive developer experience through rigorous code reviews, strategic pair programming sessions, and regular one-on-one reviews. Ensured team members had ample opportunities for skill growth and development. ⦁ Skillfully analyzed complex and ambiguous requirements, proposing multiple solutions after a thorough evaluation of the pros and cons of each option. ⦁ Acted as the primary point of contact, maintaining transparent communication with supervisors to keep them informed of progress and development updates.

In charge of leading report structure refactoring, handle things related to database, e.g. designing appropriate table relationships, performance tuning, making custom role structure combined with the way of project deployment for defending the attack. Additionally, making the website safe even under the DDoS attack by zero-database-IO captcha library which is rewritten by me and defense mode. ⦁ Microservice projects (with Django Rest Framework) development and maintenance ⦁ Design database role structure combined with project deployment for data security ⦁ Design multi-language translation structure ⦁ Design multi-database structure with Django Ninja for data integration (ETL) project ⦁ Rewrite django-simple-captcha library from database IO version to fully cache involved version. ⦁ Sentry integration with performance, query optimization, distributed tracing, release, deploy and issue tracking ⦁ Refactor report structure, modeling the way to build reports, tuning the performance with cache ⦁ Dealing with PostgreSQL related things, e.g. tuning performance by customizing system variables, database upgrading, designing appropriate indexes, and managing the connection pool with PgBouncer ⦁ Prevent the server from being attacked (CC Attack) by setting Nginx ModSecurity WAF, throttling APIs with one-click defense mode ⦁ Stress testing, performance testing and generating related reports with Locust ⦁ Kubernetes with Drone CI and Helm ⦁ Broadcast messages to pods dynamically with Google Cloud Pub/Sub ⦁ Handle async tasks with Celery and RabbitMQ ⦁ Analysis of over 1 billion-level rows of data in PostgreSQL for reports ⦁ Third-party APIs integration

Fully remote with the Hong Kong office, mostly I focus on the main project (C#) development, database performance tuning, creating sales reports using Telerik libraries and making reports published automatically. ⦁ Generating reports with Telerik Reporting library ⦁ Automatically publish reports with Azure Logic Apps as the task scheduler ⦁ Use Hangfire as background schedule tasks manager ⦁ Replace LINQ with MSSQL optimized Stored Procedure (T-SQL) ⦁ Handle frontend (Telerik Kendo UI) and Controller simultaneously ⦁ Database design, handling relationships and normalization

Applied for an internship, be promoted to full-time backend engineer in the first month. Originally, I was maintaining the project wrote with C#, after the research and discussion, decide to refactor the project which is led by me with Django. ⦁ Database design, migration, optimization and normalization ⦁ Create member system, order system, backstage and refactor C# ASP.NET project with Django ⦁ Cloud Tmall (聚石塔) VM Deployment and ICP submission ⦁ Taobao, Tmall API integration with order system ⦁ Weixin Public Account API integration ⦁ Google Cloud Platform (GCP), Amazon Web Services (AWS) and Azure evaluation, deployment ⦁ Production deployment with Ubuntu, Django, Nginx and uWSGI ⦁ Implement real-time chat with WebSocket and Redis ⦁ Automatically reserve longkeng (龍坑) seats, logging and data integration with Selenium

Cooperate with two Chinese in America, in charge of developing automatic shipment, automatic registering for coupons and the final data integration. ⦁ ebay Shop UI Automatic shipment of products bought by customers ⦁ Developing automatic register (Selenium) with VPN IP switching ⦁ Export data below as .xlsx file as logging ⦁ Import data for automatic register