Hey,
I see that you are looking for a developer proficient in Powerapps and Dynamics integration, I have hands on experience working with this stack, and with ASP.net as well.
I did work on a similar job long back, where I customized the CRM for a Roofing company in Wisconsin, they had a similar requirement of generating work-orders, inspecting roofs, and providing progress report from the mobile app itself, I did the job of integrating CRM system with the mobile app.
If needed we can get on a quick call to discuss the above in detail,
Looking forward to hear from you and working with you,
Best Regards,
Garry