Company or team of programmers - Zend project

Translators Family translation agency requires a permanent one. support for a ready-made web portal for order management based on Zend. Periodic correction of errors and additions are required. At the moment, 30 corrections or additions are required.
There's a detailed TK.
You need a reliable company or team of programmers who are well versed in Zend Framework programming and have experience with similar order management systems.

Please answer this request only if you are ready for long-term cooperation and do not have the habit of disappearing for an indefinite time (already a lot of experience with unreliable and optional programmers).

We are already actively using the system, but we have lost contact with the programmers who developed it. However, we constantly need to make additions and changes. Sometimes there are mistakes that need to be corrected. In the process, new ideas for improving the system appear. I'm sure we need lifelong tech support.
Therefore, we are looking for a reliable team/company of programmers who plan to work for more than one year.
Also important is the timely response to requests and resolution of issues.

I know it’s hard to finish someone else’s job. Fortunately, the system is in place and there are no bugs left. Now you only need to make additions and changes to the functionality. I hope that good professionals will not have a hard time understanding the system quickly, given that I will provide a detailed description of the system and its additions.
It is better to test the updated portal on your host, because we use the portal in work, and, as practice has shown, new updates can appear new errors.

Before starting work, we will sign a non-disclosure agreement.

You're giving me an hour's worth of work.