[Ugarinino]

How to find and choose the best company? What things should I pay attention to?

[TheGoldenRelik]

How to find and choose the best company? What things should I pay attention to?

there are many approaches on this. You can find some through LinkedIn. Pay attention on its website and social media (reviews, comments, etc.)

[ekkJackYouLate]

Glassdoor. It's a great way to get the ethos of the company.

[Cifrvel]

You should look through various ratings of companies. As every company has different specialization and different experience, you need to find and acquaintance their portfolio and feedbacks on their work

[Valenor1234]

Look on forums etc, ask people what they think

[777media]

I would honestly use Elance or Freelance.com, where you can post your project and receive bids from devs around the world. Some of them own companies or work for one that you could follow up with if you're pleased with services.

I really like using these sites now because you can see a wild price spread for each worker and it helps you get the best work for the best price.

[Bluffer]

Go to this guy: https://hackforums.net/showthread.php?tid=5885577

He's incredibly intelligent and can help you with whatever you need I'm sure.