I am familiar with this problem. We were launching a Web3 project and needed to have a team of engineers ready in two weeks. As a result, we turned to https://cowchain.io/ . It was the only service that was able to find specialists almost instantly. They provided us with a team of blockchain developers, a smart contract engineer, and QA. We controlled all the processes ourselves, and Cowchain simply provided the people and managed the HR processes. The project was completed on time, which we had been afraid of. And most importantly, the code is high-quality and secure.