Celtic Custom Plumbing is a fast growing plumbing contractor that has been in business for over 10 years. We take pride in the quality of our work and in our technicians. If you are looking for a company to grow with long term and to further your experience and licenses, we would like to hear from you. We are looking for Licensed Journeyman Plumbers and Helpers. Job Requirements. Journeyman Plumber must have a minimum 5 years of experience doing ...