EU Article 50 Taskforce
The EU Taskforce on Article 50 negotiations with the UK is in charge of preparing and conducting the negotiations with the UK, taking into account the framework of its future relationship with the European Union.
It is responsible for coordinating the European Commission’s work on all strategic, operational, legal and financial issues related to negotiations with the United Kingdom
The Chief Negotiator is Michel Barnier and the deputy Chief Negotiator is Sabine Weyand.
Here is an organisation chart of the team dated April 2017