Lead Plumber - Skilled and Trained

** MUST BE ABLE TO PROVE YOU GRADUATED FROM AN APPROVED APPRENTICESHIP**

Mark III Construction is seeking a Journeyman Lead Plumber that are Skilled and Trained and can proved they graduated from an approved apprenticeship for work on commercial/industrial projects in the Sacramento and surrounding area. Plumbers will perform tasks associated with the assembly and installation of pipes, fixtures, and other plumbing used for water distribution and wastewater disposal.

Mark III is a full-service construction company comprised of three complementary business units:
M3 MEP, M3 Service, and M3 Components
. We support projects from initial concept through long-term maintenance, with specialized expertise in healthcare, higher education, industrial, life science, and technology markets.

Our integrated, big-picture approach allows us to self-perform electrical, HVAC, plumbing, process piping, prefabrication, and MEP design. By consolidating these services under one organization, clients benefit from reduced profit layers, minimized scope gaps, and simplified project schedules—working with a single, accountable partner rather than multiple consultants and subcontractors.

Headquartered in Sacramento, California, Mark III operates throughout California and Nevada. Our state-of-the-art manufacturing facility serves as a centralized hub supporting five core trades: HVAC, mechanical piping, plumbing, electrical, and metal-stud framing. To support our continued growth, we just relocating from our office of 50 years to our new 340,000-square-foot
headquarters at 2031 Optisolar Lane
, on October 19th 2026.

Leading the Evolution of Construction

Exposing the World to a New Way to Build

• Teamwork
• Excellence
• Perseverance
• Integrity
• Continuous Improvement

Works alongside the Foreman to direct day-to-day plumbing work on commercial jobsites

Performs skilled installation work while guiding journeymen and apprentices, keeping quality, safety, and production on track. Acts as the foreman’s point of contact and stands in when the foreman is away.

• Journeyman plumber license (or equivalent state/local certification), or demonstrated equivalent experience and trade training per company policy
• 5+ years of commercial plumbing experience, including 1-2 years in a lead or mentoring role
• Valid driver’s license and reliable transportation
• OSHA 10 required (OSHA 30 preferred)
• Ability to pass a background check and drug screen, per company policy

• Reads and interprets commercial plans, specs, isometrics, and coordination/shop drawings
• Installs and lays out domestic water, sanitary, vent, storm, roof drains, and gas systems
• Large-diameter piping: cast iron (no-hub and hub), copper, grooved-joint systems, and CPVC/PVC
• Underground rough-in, including excavation coordination, slab penetrations, and sleeving
• Commercial fixtures and equipment: flush valves, ADA fixtures, water heaters and boilers, grease interceptors, sumps/ejectors, trap primers, and trench drains
• Testing and inspection: pressure and air tests, hydrostatic tests, flushing, and disinfection
• Working knowledge of the applicable plumbing code (CPC/UPC with local amendments)
• Rigging, lifts, and heavy-equipment setting

• Assigns and directs work for journeymen and apprentices
• Trains and mentors apprentices and checks the quality of their work
• Tracks production against the schedule and reports progress to the foreman
• Runs the crew when the foreman is absent
• Keeps the crew focused, professional, and productive

• Reviews upcoming work and identifies materials, tools, and manpower needs
• Coordinates with mechanical, electrical, fire protection, framing, and the GC to resolve…