A specialized plumber installs, maintains, and repairs complex plumbing systems and fixtures by diagnosing issues, adhering to codes, and using specialized tools. Responsibilities include reading blueprints, installing pipes and fixtures, troubleshooting leaks and blockages, and ensuring all work meets local regulations and safety standards. Key skills for a specialized plumber are strong technical knowledge, problem-solving abilities, excellent communication with clients and contractors, physical stamina, and meticulous attention to detail.