Employee Of Quarter in Q4, 2020 Developing a system for exchanging & converting different formats of Cyber Threat Intelligence. * Event Driven Architecture (with AWS Kinesis) * Programming with Java, Golang, Python. * Use plenty of AWS services. e.g. ECS, AES, Kinesis, Lambda, Athena, DynamoDB, RDS ... etc. Coordinating with Infra team's members to build&maintain 10+ data centers on AWS and Azure. * All cloud services are built through "Infrastructure as Code" with Terraform. * Maintain 10+ Kubernetes clusters with over one thousand instances. * Use plenty of Kubernetes plugins for monitoring(prometheus+grafana), networking(istio), auotoscaling... etc. Developing a platform to pull log events automatically and make threat experts to easily analyze log events & design/maintain rules for them. * Implement both frontend & backend of the platform via django (python) * Elasticsearch as a repository of log events

Backend development of a stock/futures/warrant investment platform (using Go mainly) * Real-time quote: Our Go server keeps users' subscribes on products and dispatch real-time quote to them through WebSocket. * Risk control: We store orders' information in Redis and use daemon to calculate risk periodically to control risk ASAP. * Order: To ensure the integrity of orders, we use RabbitMQ for making orders. Backend development of a gaming platform: including game logic, member info/history, API concatenation and odds/risk calculation. (using PHP mainly) Database design & maintenance. (MySQL/Redis/proxySQL/AWS RDS) * I've re-design our data structure for Redis so that our website could handle thousands of user active online other than break down when only tens of users online. * Add composite keys for frequently used queries; Write crontab for automatically periodical DB backup;Make sure tables are all normalized. * nginx, haproxy, jenkins, AWS configuration .