Start with relevant experience, not the length of the client list. Ask for a couple of projects that sit close to your technology stack, and then ask which engineers actually built it. A serious vendor is happy to connect you with the people who would work on your project. Evasive answers at this stage generally mean the delivery team is not the team you were shown.

The agreement warrants more attention than the sales deck. Three clauses do most of the work: intellectual property assignment, ai assisted software development non-disclosure, and termination and handover. Everything produced has to transfer to you as it is paid for, including designs, scripts and infrastructure configuration. Be careful with language that leaves reusable components with the vendor, since it is usually the dependency that makes switching painful.

Find out how the estimate was built. An honest estimate arrives with the assumptions behind it, a task-level breakdown and a range rather than a single number. A fixed price works only when the specification is complete; when the scope is still moving the supplier pads the number and you pay for uncertainty either way. A time-and-materials model puts the risk on your side, so it needs a cap, regular demos and transparent reporting.

Process beats team size. Ask what happens when the scope changes, next js vs laravel who defines done and what the QA setup looks like. A mature team will be able to show you a live build at the end of each sprint. Written acceptance criteria stay the only reliable protection against an argument at delivery time.

Before signing, think about the end of the engagement before it becomes urgent. Insist that the source repository stays under your account from day one, and that a readme and custom blockchain development architecture notes are kept current as the code changes. A vendor custom government software development with nothing to hide will agree quickly; a long negotiation over it reveals quite a lot.