A quote that comes back within a day should be treated as a bad sign. An experienced provider returns a list of questions: about users and custom software development uk volumes. A provider that prices before understanding the scope is simply guessing, and the gap resurfaces as a change order — on your budget.
Be wary of any distance between the engineers on the sales call and those who eventually appear in the repository. Ask for named engineers in the statement of work, with a clause covering replacement. A team that only offers a pool of resources and refuses to name individuals is reserving the right to assign anyone it likes.
Insist on the source repository from the start. A team that shows a build only at the end of each phase expects you to take delivery on faith. Daily commits tell you how many people are really working far better than a weekly report. This extends to the CI pipeline: if nothing runs automatically, promises about quality remain unverifiable.
Ambiguous wording software development companies in europe the contract around IP is not an oversight. The contract needs to state explicitly that all outputs produced under it become the property of the client on payment. Look too at the governing law and the payment schedule: a request for most of the money up front with no milestone tied to it eliminates the only leverage you have.
Finally, examine the working rhythm. Confirm what overlap you will share with your timezone, which named person handles your questions and how quickly. Four hours of overlap is usually enough; zero overlap converts each small question into a lost day. Unclear written communication in the early emails will not improve later.