Transferring and Reviewing English Language Exercises into online platform - Quality Assurance

We are working on the project of digitizing English language coursebooks s into our newly developed online application.
I am looking for an experienced EFL teacher who can check and update questions in our learning management platform. The purpose is to:
- ensure the quality of the exercises
- finding and fixing errors
- ensuring that a learner can understand instructions
- updating the question definitions in the online platform
- classification of items/exercises by grammar category
- working with the team of content administrators to ensure quality

I am looking for someone who can spend a few days on this project with the possibility of ongoing cooperation.

Requirements:
- Excellent English (if non-native speaker, minimum Proficiency - C1 level)
- More than 3 years of EFL eaching experience, preferably in an international environment
- Ideally, if you have experience in marking English exams/assessments
- Experience in preparing students for English language exams
- Ability to create/modify exercises content
- Attention to detail and high-accuracy
- Ability to verify if the content/exercise would be a valuable teaching aid.
- Understanding requirements for various CEFR levels (The Common European Framework of Reference for Languages)
- Everything is online. Although full training will be provided, some level of experience in using online learning/teaching platforms. Previous experience in using and adding content to LMS systems e.g. moodle, canvas etc would be very beneficial.