What would the syntax be for the following requirement in SOQL?

I have threee fields:

1. First Name

2. Last Name

3. Description (Long Text Area)

I need to get all names which have the word 'Developer' (or any keyword) in the 'Description' Long Text area. I have hit the wall trying to use the keywords 'contains' or 'includes' without success. Doesn anyone know how to build a SOQL using these both keywords?

Any help much appreciated.