mid yii2-developer

Good afternoon!

Looking for a middle yii2 developer for the project some semblance of an online store of electronic services, with a lot of different functionality.
The project is made on yii2 yii1, a lot of legacy code.

Examples of tasks:
- increase the performance of mysql - server, due to increased traffic
- screw up the api of a third-party service
- write rest api on yii2
- to correct the layout
- write javascript/jquery code
...

Requirements:
- php5/7, yii1, yii2, mysql, html, css, nginx, linux
- optimizing queries, experience in improving project performance
- work for the result, including layout, server setup and other non-core tasks (rarely)
- stable online, no missing
- work through git, periodically will come across a terrible and incomprehensible code

There are a lot of tasks and they are all diverse, there will be a small layout, and setting up the server, and writing tests, etc.
That is, you need a wagon with a slope in the backend

Monthly payment, work constant 5/2, private customer, communication via telegram