Senior Ruby on Rails Developer

I am looking for an experienced senior-level Ruby on Rails developer to join my team as we embark on a project focused on the creation of new products for our online marketpace. This person must be a self-starter and be able to think outside of the box to apply their expertise to the project. We are llooking for someone who always writes specs and tests and uses sound logic. We are looking for someone for 10 hours per week to begin with the option to increase to 40 hours per week over time. Must be able to work overlap with AEST business hours