What career options are there after Delta?
As you gain experience as a Delta-qualified teacher, you might think about moving into teacher support, in the role of senior teacher. You could develop in-service training for teachers in your school via talks and professional development sessions. Conducting observation and giving feedback is also useful for many teachers for professional development purposes.
Typically Delta qualified teachers can expect to have access to job postings for more senior positions such as senior teacher, academic coordinator and director of studies. A good source to look for Delta-qualified jobs specifically would be www.tefl.com
You could also explore giving seminars and webinars, as well as writing blogs and materials. Course book and curriculum development are also interesting areas to explore. You can get an idea of how some of these areas might look here.