Begin with domain experience, not the number of logos on the website. Ask for two or hire remote expo developer three projects that match your technology stack, and then ask whether those engineers are still with the company. A solid partner is happy to connect you with the tech lead. Evasive answers at this stage generally mean the delivery team is not the team you were shown.

The contract needs a slower read than the pitch. Three sections matter more than the rest: intellectual property assignment, non-disclosure, and notice periods and handover. All the work product should transfer to you as it is paid for, together with designs, scripts and infrastructure configuration. Watch for language that leaves reusable components outside the transfer, as that is often the dependency that makes switching painful.

Find out how the estimate was built. An honest estimate arrives with the assumptions behind it, a breakdown by feature or module and an explicit range. A fixed-price contract only makes sense when the requirements are stable and b2b ecommerce development services documented; in any other case the vendor pads the number and you pay for uncertainty either way. Time and materials moves the risk back to the client, so outsourcing it development requires visible weekly reporting and a spending cap.

The delivery process matters more than headcount. Find out what happens when the scope changes, laravel vs next.js who signs off on a feature and how quality assurance works. A well-run team should be able to show you a working build every one or two weeks. Clear, written acceptance criteria are your only real protection against an argument at delivery time.

Finally, consider the handover at the start rather than at the end. Require that the repository sits on infrastructure you own from the first commit, and that the documentation is refreshed in every sprint. A vendor with nothing to hide says yes immediately; hesitation here reveals quite a lot.