First, consider the business aspect. Does the company understand your business needs and the context of your technology project? Before you begin, make sure you're on the same page. Review the company's previous work to assess its expertise. Visit their portfolio and website (that's how I found asd.team) to assess their capabilities. It's also worth evaluating the number of technologies they use and finding experts in those fields.
Before starting your search, define your project requirements and expectations. Consider factors like what type of app you want to build, whether you're starting from scratch or need an extension, your existing roles and tech stack, and your budget.