Quality Control Lab Technician

Join our in-house concrete laboratory and QC team supporting precast and prestressed products for DOT, marine, port, and infrastructure projects across New England. This is more than a testing job—our lab does mix-design development, surface resistivity and permeability testing, and temperature-matched curing that most concrete labs never touch. If you have a strong interest in concrete technology and want to grow, this role offers a defined path from Technician → Senior Technician → QC Specialist , with training and ACI certification support along the way. Why Join Us Clear career progression with hands-on training and paid ACI certifications Advanced lab: mix design, durability testing, temperature-matched curing, applied R&D High-profile DOT and marine projects Stable, year-round work with a collaborative QC, production, and engineering team [Benefits: health/dental/vision, 401(k) match, PTO, paid holidays] What You'll Do Sample and test raw materials (cement, aggregates, water, admixtures) for spec compliance Perform fresh concrete testing—slump, air, temperature, unit weight—per ASTM, ACI, and DOT requirements Cast, cure, and compression-test cylinders and other specimens Assist with mix-design development, optimization, and troubleshooting Perform QC testing on precast and prestressed products Maintain accurate test records and QC documentation Review test data to spot trends or quality issues and report to QC management Help investigate nonconformances and corrective actions Maintain and calibrate lab equipment; keep a clean, safe lab Participate in R&D of new materials, mix designs, and QC methods Career Path QC Technician → materials and fresh concrete testing, strength testing, documentation Senior QC Technician → mix-design trials, durability testing, data analysis, mentoring QC Specialist → mix-design development, nonconformance investigations, spec review, R&D Advancement is based on skill, certifications, and performance—not just time served. What You Bring Experience in concrete, materials testing, QC, or lab work preferred—motivated candidates with technical aptitude will be trained Working knowledge of concrete materials and testing; ability to follow ASTM/ACI/DOT procedures Strong math, analytical, and attention-to-detail skills Good communication and ability to work independently in a fast-paced plant Comfortable working outdoors and in a manufacturing environment Proficient in Word, Excel, and Outlook Preferred: ACI Field Testing Grade I and/or Strength Testing certification; mix-design experience; New England DOT specifications; familiarity with ASTM C31, C39, C138, C143, C173/C231, C1064; durability testing (resistivity, permeability); associate's/bachelor's in civil engineering technology or related field. Competitive salary Medical, dental insurance 401(k) with 10% company match Paid time off and holidays #J-18808-Ljbffr United Concrete Inc