React developer

We are looking for a senior React developer to come onboard to maintain existing and develop new applications. We are currently using React v16 but want update to 19, so any experience of this would be helpful. The candidate must be able to take ownership of the project and work with the business in defining UI and workflows. The applications are business apps and communicate with internal restful API's. The client is relatively small so you would have a fair degree of input and control. We are looking for a European with good English. The project will be ongoing so need someone who is happy to commit and stay onboard.