Callstack’s goal is to help you and your team deliver a great product. That’s why working with us feels significantly different than you might have experienced with external teams. We feel like your developers, just working remotely today.
We make sure that your app is not only cutting-edge, but rock solid in the long term.
Always in touch
We're happy to use any software you prefer, be it Slack, Asana, Trello, etc.
Pay as You Go
We are your very personal, full-time employees. Say goodbye to unrealistic quotes.
Cross-platform experts serving you from Wroclaw, Poland.
Callstack.io Sp. z o.o. seated in Wrocław, Poland, at Rybacka 7, 53-656 Wrocław, entered in the Register of Entrepreneurs of the National Court Register, kept by the District Court of Wrocław-Fabryczna in Wrocław, VI Commercial Division of the National Court Register under the number 0000606530, with share capital of PLN 8,000.00, with tax identification number (NIP) 8992785616, and statistical number (REGON) 363921820.