Plumber III

Countywide Mechanical Systems; El Cajon (CA); On-site; USD 60,000 - 80,000; Full time

Benefits offered by this job

Competitive pay

Professional development opportunities

Work-life balance commitment

Job summary

Countywide Mechanical Systems is looking for a skilled Plumber III to handle complex commercial plumbing systems. You’ll independently manage installations, repairs, and mentor junior plumbers while ensuring all work is code-compliant and safe.

With over 5 years of experience, the ideal candidate will demonstrate mastery of plumbing techniques, strong leadership, and problem-solving skills. We offer a collaborative environment with competitive pay, benefits, and career growth opportunities.

Qualifications

• Minimum 5+ years of hands-on experience in commercial/industrial plumbing installation, repair, and maintenance.
• Mastery of plumbing systems, materials, local/national codes (IPC/UPC).
• Relevant certifications, including OSHA safety training.

Responsibilities

• Independently plan and install plumbing systems in commercial settings.
• Troubleshoot plumbing issues and perform pressure testing.
• Collaborate with other trades for project efficiency.
• Mentor lower-level plumbers and maintain project documentation.

Skills

Problem-solving

Leadership

Communication

Teamwork

Education

Journeyman plumber license

Tools

Plumbing tools

Job description

Join Our Team as a Plumber III

Ready to operate as a true journeyman plumber, taking full ownership of complex commercial plumbing work while guiding others? At Modigent companies, we deliver code-compliant, high-performance plumbing systems for commercial buildings, hospitals, schools, industrial facilities, and more—ensuring safe water supply, efficient drainage, reliable gas lines, and flawless fixture performance. We're seeking skilled, independent Plumber IIIs to handle advanced installations and repairs, mentor junior team members, and contribute to successful projects from start to finish.

Why Join Us?

• Commitment to Excellence — Safety, precision, and adherence to codes are non-negotiable—we build systems that are durable, leak-free, and built to exceed expectations.
• Customer-Focused Culture — Proactive planning, clear communication, thorough testing, and continuous improvement keep projects on schedule and clients satisfied.
• Leadership & Growth — Work independently while developing leadership skills through mentoring; access advanced training and clear pathways to senior/supervisory roles.
• Great Perks — Competitive pay and benefits, collaborative team environment, professional development opportunities, and a real commitment to work-life balance.

What You'll Do As a Plumber III

As a journeyman-level Plumber III, you'll perform complex, independent work on commercial plumbing systems (potable water, sanitary drainage, storm, gas piping, backflow prevention, fixtures, and equipment) while beginning to mentor lower-level plumbers. Key responsibilities include:

• Independently planning, laying out, installing, repairing, and maintaining plumbing piping systems, fixtures, valves, pumps, water heaters, and related equipment in commercial and industrial settings.
• Troubleshooting and diagnosing issues in plumbing systems, performing pressure testing, leak detection, drain cleaning/unclogging, backflow testing, and system balancing to ensure optimal function and safety.
• Reading and interpreting blueprints, specifications, schematics, and work orders to execute accurate, code-compliant installations, modifications, and repairs.
• Assembling and installing piping materials (copper, PVC, CPVC, PEX, cast iron, etc.), fittings, supports, and fixtures to precise standards.
• Collaborating with other trades, coordinating site activities, and contributing to efficient project sequencing and problem resolution.
• Mentoring and guiding Plumber I and II team members—demonstrating techniques, sharing best practices, and helping build skills on the job.
• Maintaining accurate documentation, as-builts, daily logs, safety records, and ensuring site cleanliness and organization.

What We’re Looking For

• Minimum 5+ years of hands‑on experience in commercial/industrial plumbing installation, repair, and maintenance.
• Mastery of plumbing systems, materials, local/national codes (IPC/UPC), and advanced installation techniques.
• Proven ability to work independently with minimal supervision while delivering high-quality, safe, and efficient results.
• Leadership mindset—eager to mentor juniors, share knowledge, and support crew success.
• Excellent problem‑solving, communication, and teamwork skills.
• Physical capability for demanding work: lift up to 50 lbs, frequent bending/lifting, standing/walking on uneven terrain or in confined spaces, and safely climbing ladders/scaffolding.
• Relevant certifications (e.g., journeyman plumber license, backflow prevention certification, OSHA safety training) or equivalent mastery strongly preferred—we prioritize demonstrated expertise.

Modigent companies are equal opportunity employers. We celebrate diversity and are committed to creating an inclusive environment for all employees.