Quality Control Lab Technician

United Concrete; Wallingford (CT); On-site; USD 45,000 - 65,000; Full time

Benefits offered by this job

Health/dental/vision insurance

401(k) match

Paid time off

Job summary

United Concrete in Wallingford, CT, seeks a QC-focused technician to support precast and prestressed products. You will join an in-house concrete laboratory conducting mix-design development, durability tests, and resistance testing, with opportunities for growth and ACI certification support.

Starting as a Technician, you’ll progress to Senior Technician and QC Specialist as you gain experience, with training provided and strong collaboration across QC, production, and engineering teams.

Qualifications

• Experience in concrete, materials testing, QC, or lab work preferred; motivated candidates will be trained.
• Ability to follow ASTM/ACI/DOT procedures and apply concrete testing standards.

Responsibilities

• 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.

Skills

Concrete testing

Analytical skills

Attention to detail

Communication

MS Office

Education

Associate's/Bachelor's in civil engineering technology or related field

Tools

Laboratory equipment

Job description

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