Welder

Job Description

Job Description

Company Background:

We are 24 (and growing) market-leading operating companies that deliver unmatched HVAC, mechanical, refrigeration, plumbing, and electrical solutions. We are actively building the nation's preferred technical service partnership for commercial MEP+ ecosystems, empowering industrial, commercial, and institutional clients—including Fortune 500 companies and other industry leaders across the United States—with reliable, innovative service. Learn more about us at

Retrofit Technology is part of the Kelso Industries family of companies, a rapidly growing group of mechanical, electrical, and plumbing (MEP+) contractors committed to excellence in safety, quality, customer success, and craftsmanship.

Based in Bloomington, California, Retrofit Technology specializes in all aspects of commercial HVAC systems, including installation, maintenance, and service. Our team is equipped to handle projects from start to finish with precision and care. Backed by certified welders, electricians, and service technicians, we have the expertise to tackle even the most challenging HVAC retrofit and mechanical projects—delivering exceptional results every time.

We are seeking an experienced Pipe Welder to join our growing team and support mechanical and HVAC retrofit projects across Southern California.

This position is based out of Bloomington, CA and requires frequent travel to job sites throughout the region. A daily per diem is provided and hotel accommodations are covered by the company when overnight stays are necessary.

The Pipe Welder will be responsible for fabricating, assembling, and installing piping systems for commercial and industrial HVAC applications. The ideal candidate has hands-on experience with multiple welding methods and piping materials, values safety and quality, and can work both independently and as part of a field crew.

• Weld and assemble piping systems using various methods (TIG, MIG, stick, brazing, soldering, etc.).
• Fit, align, and secure pipe systems and supports according to specifications and drawings.
• Read and interpret blueprints, schematics, and technical drawings.
• Fabricate and install copper, carbon steel, stainless steel, and PVC piping.
• Perform rigging, demo, and installation work on HVAC retrofit projects.
• Inspect completed welds to ensure compliance with codes and safety standards.
• Collaborate with project managers, foremen, and other trades to complete projects efficiently.
• Maintain a clean, safe, and organized work area in compliance with OSHA and company policies.

• High school diploma or GED equivalent.
• 3+ years of experience in pipe welding or mechanical retrofit environments.
• Proficiency in one or more of the following:
  • Soldering or brazing copper pipe
  • Welding carbon or stainless steel pipe
  • Fitting or threading steel and PVC pipe
• Ability to pass a pipe welding test (administered at our Bloomington shop).
• Skilled at reading and following mechanical drawings and specifications.
• Valid driver's license and willingness to travel throughout Southern California.
• Strong attention to detail, reliability, and safety mindset.

• Hourly wage: $30 – $50 per hour (based on experience and certification)
• Per diem and hotel accommodations provided for overnight travel
• Paid travel time to and from job sites
• Comprehensive benefits package:
  • Medical and dental (50% employer paid)
  • 401(k) with up to 4% company match
  • Eligibility after 30 days of employment
• Paid Time Off (PTO) and company holidays
• Opportunities for long-term growth within the Kelso Industries family

If you're a skilled welder who takes pride in craftsmanship and enjoys working on complex HVAC retrofit projects, we'd love to hear from you. Apply today to join a team that values safety, integrity, and excellence in every project.

Our compensation reflects the cost of labor across several US geographic markets. The base pay for this position ranges from our lowest geographic market up to our highest geographic market. Pay is based on a number of factors including market location and may vary depending on job-related knowledge, skills, and experience. Kelso Industries is a total compensation company. Dependent on the position offered and forms of compensation that may be provided as part of a total compensation package, in addition to a full range of medical, financial, and/or other benefits.

California Pay Range

$30—$60 USD

Why Join Us?

We're committed to attracting talented individuals who seek a company with a strong foundation of success and an outstanding culture. We proactively provide competitive compensation, comprehensive benefits, and clear pathways for career advancement with autonomy and flexibility in an entrepreneurial environment.

Learn more about us at

We celebrate diversity and are committed to creating an inclusive environment for all employees. We do not discriminate in any aspect of employment on the basis of race, color, religion, national origin, ancestry, gender, sexual orientation, gender identity and/or expression, age, veteran status, disability, or any other characteristic protected by federal, state, or local employment discrimination laws where Kelso does business.