Begin with relevant experience, not the size of the portfolio. Request two or three engagements that match your technology stack, and then find out 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 you are talking to a reseller.

The agreement warrants more attention than the sales deck. Three clauses do most of the work: ownership of the code, the NDA, hire dedicated development team and exit terms and handover. All the work product has to transfer to you on payment, along with source code, designs and infrastructure as code. Watch for any clause that leaves reusable components outside the transfer, web development company dubai since this is frequently the dependency that makes switching painful.

Find out how the estimate was built. A credible estimate arrives with the assumptions behind it, a breakdown per feature and an explicit range. A fixed-price contract works only when the scope is genuinely frozen; in any other case the vendor prices the risk in and you pay for uncertainty either way. Time and saas or custom development materials moves the risk back to the client, so it demands a cap, regular demos and transparent reporting.

Process beats headcount. Find out how change requests are handled, who defines done and how testing is organised. A mature team should be able to walk you through a working build every one or two weeks. Clear, enterprise ai development services written acceptance criteria remain your only real protection against endless rounds of rework.

Before signing, think about the end of the engagement before it becomes urgent. Ask that the repository lives in your organisation from day one, and that a readme and architecture notes are kept current as the code changes. A provider confident in its own work accepts it without argument; a long negotiation over it reveals a great deal.