Of course. Several examples in the SlipStream SaaS, Nuvla, are implemented using configuration management solutions, such as Chef or Puppet.
SlipStream is agnostic in terms of recipe implementation. If you already have configuration management recipes implemented in tools such as in Puppet, Chef and/or Ansible, they can be used in SlipStream.
You can also use your favourite scripting language - e.g. bash on Linux, PowerShell on Windows.
And of course, you can mix these implementations, so that you immediately get the benefit of automation first and can then rationalize your recipe implementations as part of continuous improvement and quality assurance.