A number produced without questions should be treated as a warning, nearshore vs offshore development not a service level. A competent team returns clarifying questions before any number: about integrations. A vendor that commits to a figure with no clarification is probably working from a template, and that guess will be corrected later — on your budget.

Watch for a gap between the people you meet and the developers actually assigned. Ask for the names and CVs of the actual team in the statement of work, with a clause that requires notice before anyone is swapped. A provider that talks only about roles and never names specific engineers is keeping the right to assign anyone it likes.

Require access to the repository from day one. A provider that hands over nothing between demos is asking you to take delivery on faith. Regular commits and pull requests tell you the actual pace far better than a slide deck. The same applies to the CI pipeline: if there is no pipeline, promises about quality remain just talk.

Vague wording in the contract around IP is not an accident. The document needs to state explicitly that all outputs produced under it become the property of your company as they are paid for. Check also the governing law and the milestone terms: heavy prepayment with no milestone tied to it eliminates any leverage you would otherwise keep.

Lastly, hire php unit testing engineer examine how they communicate. Establish how much working-time overlap you will share with your working day, angular enterprise application which named person is expected to answer day-to-day questions and on what response times. A few hours of overlap generally works; no overlap stretches every clarification into a day of delay. Unclear written communication in the early emails rarely improves under delivery pressure.