Setting up a virtual test environment – any suggestions?

We are looking for a platform to support an ongoing java development project. What we need to setup is a test environment that utilises IntelliJ for Java development. SQL (MS SQL, Postgres) and JDBC for database applications and tomcat installed and running.  Can you please recommend a solution on how we can achieve this?  We need a virtual environment where we can have a number of developers around the world work on developing our system at the same time.