After months of Chatbot review, I find that NLP (Natural Language Processing) development is a different ball game. These are some skillset that you may want to consider to build your Chatbot team.
A new Paradigm
Chatbot is a new paradigm. Thus, it will take experienced developers to change and gat used to this approach. You will need to find someone who is patience and willing to redesign from a user centric approach. An entrenched mindset will be difficult for development of Chatbot.
Right Fit not Right Skills
If you are building a Chatbot team, do look for aptitude instead of someone with good technical skills. Thus, a person who is interested to Chatbot development is a better fit. Technical skills can get obsolete but a person who have the right learning mindset will grow with Chatbot.
Chatooth development is a new paradigm and faces resources issues in filling these roles. You should aim to build a team who is dedicated to grow and champion the usage of Chatbot. If not, it will remain another white elephant as time goes by.