Pipefitter, Sr. assembles and repairs pipe systems of various shapes, sizes, and pressures. Ensures proper placement, alignment, and operation according to blueprints and instructions. Being a Pipefitter, Sr. requires a high school diploma or equivalent. Typically reports to a supervisor or manager. The Pipefitter, Sr. works under moderate supervision. Gaining or has attained full proficiency in a specific area of discipline. To be a Pipefitter, Sr. typically requires 1-3 years of related experience, or may need 0 years of experience with additional specialized training and/or certification.