Trillium Construction in Carlsbad is the San Diego County branch of Trillium Staffing Solutions, a national construction-trades staffing agency founded in 1984 in Battle Creek, Michigan. The Lionshead Avenue office places apprentice-through-journeyman-level electricians, pipe fitters, welders, carpenters, ironworkers, and heavy-equipment operators on project sites across North County, drawing from the same skilled-trades labor pool that feeds service bays at shops such as Carlsbad Auto Repair & Smog. Named a 2024 Best Staffing Firm to Work For by Staffing Industry Analysts, Trillium employs a full-time safety-management team offering OSHA-10, OSHA-30, aerial-lift, and confined-space certifications for deployed tradespeople. The company's mobilized workforce travels nationwide, placing NCCER-certified and TWIC-card-holding contractors on commercial, industrial, and municipal infrastructure projects, including public-works sites near Alga Norte Community Park and other city facilities. Screening protocols include trade-skill verification, reference audits, and drug testing calibrated to client-specific safety tiers across union and non-union project environments.