Hi there,
I have experiences with Magento 2 development. Currently, i have 3 Adobe Magento EXPERT certifications: Developer, Frontend & Business Practitioner and AWS cert too. I'm just new here so not any review yet but I can do interview before the job. Hope I can help you with your task.
Magento 2, latest version, still has many index related issues. Be triggered by cronjob, so most of them can be seen in log file.
Currently, I don't have enough information about your issue, could not provide exact bid. As my previous index issues, it 's around 3 hour debug and fix. Let de discuss them choose your awarded.
Thanks.