Work over 3 years as the developer , and here are below the tech stacks which I am expert in:
Django/Flask and other web frameworks
Style of the Restful API, the separation of the front and back end
Front-end HTML,CSS,JavaScript, Bootstrap, Jquery, Ajax, Three.js, Vue,React,etc
MySQL/Oracle/other relational databases and non-relational databases such as Redis/SQLite
Linux (centos, Ubuntu, etc), Windows Server and other operating systems
Networking protocols, including TCP/IP, UDP, DNS, DHCP, FTP,SFTP,SSH and so on, and the tools like ping , nslookup, telnet ,wget, scp and so on
Containerization technology, like Vmware,Docker,K8S,
CI/CD, GitLab,Harbor,Jenkins,Ansible tools, etc
Some of the web server, like nginx，IIS，UWSGI and so on
Programming stylls of the multiple-processing、multiple-threading
Code version management tool, Git and private code-warehouse,GitLab and so on
Programming language like C#,python(just like module of the Socket，Selenium，PyQt5, WxPython，Numpy，CX_Oracle and so on )
Monitor tools, like Zabbix,Promethus, Grafana,AlertManager
Cloud Management of AWS , AliCloud,TencentCloud