Concrete Materials and Lab Supervisor

Department: Quality Control | Reports To: QC Manager | Employment Type: Hourly

About the role

Oversee concrete testing, materials evaluation, mix-design development and qualification, and quality-verification activities. Lead laboratory personnel and collaborate with Batch Plant, Production, Quality Control, and Engineering teams to ensure consistent concrete performance, compliance, and continuous improvement.

Pay

$27.00–$30.00 per hour, based on experience, qualifications, and skills.

Schedule

Full-time, permanent position. Start time: 8 a.m., Monday through Friday. Overtime and Saturday work may be required based on operational needs.

Responsibilities

• Laboratory and Testing Operations
  • Supervise daily operations of the concrete laboratory, including fresh and hardened concrete testing.
  • Ensure testing is performed accurately and in accordance with applicable ASTM, PCI, NPCA, ACI, customer, and project-specific requirements.
  • Establish and maintain testing schedules that support production requirements, mix-design qualifications, product development, and project timelines.
  • Review, validate, and approve laboratory test results, reports, certifications, and related documentation.
  • Ensure testing activities are completed accurately and within required timelines.
  • Investigate out-of-specification or unexpected test results and lead root-cause analyses and corrective actions.
  • Maintain organized and traceable laboratory records.
  • Ensure laboratory equipment is properly maintained, calibrated, certified, and available for use.
  • Establish and maintain schedules for required calibration, inspection, maintenance, and certification activities.
  • Maintain an adequate inventory of laboratory supplies, consumables, molds, testing equipment, and other materials.
  • Identify equipment deficiencies and recommend repairs, replacements, or upgrades.
• Team Leadership and Supervision
  • Supervise, train, coach, and mentor concrete testing technicians and laboratory personnel.
  • Assign daily responsibilities and prioritize testing activities based on production and project requirements.
  • Ensure appropriate laboratory coverage and the timely completion of testing.
  • Establish clear expectations for technical accuracy, documentation, safety, productivity, and professional conduct.
  • Assist with performance evaluations and support employee development and technical progression.
  • Identify training needs and provide or coordinate appropriate technical training.
  • Promote a culture of accountability, teamwork, continuous improvement, and professional responsibility.
  • Enforce safe work practices and laboratory safety standards.
• Mix-Design Development and Qualification
  • Assist with the development, optimization, and qualification of concrete mix designs to achieve required strength, durability, workability, finish, and production performance.
  • Lead trial batching, testing, evaluation, and validation of new and revised mix designs.
  • Ensure mix designs comply with customer specifications and applicable codes, standards, and regulatory requirements.
  • Troubleshoot mix-performance issues in coordination with Production, Engineering, Quality Control, and material suppliers.
  • Monitor mix performance and recommend adjustments based on laboratory data and production results.
  • Maintain current mix-design records, approvals, supporting documentation, and revision control.
  • Support the development and implementation of more efficient and cost-effective mix designs without compromising performance requirements.
• Quality Control and Compliance
  • Ensure compliance with internal quality systems, customer specifications, and regulatory requirements.
  • Coordinate with the Quality Control and Production teams to address mix-performance issues.
  • Support audits, inspections, and customer or third-party reviews.
  • Maintain accurate testing documentation, calibration records, and quality logs.
  • Coordinate required equipment calibrations and annual water testing.
• Materials Management and Evaluation
  • Monitor and document the properties of raw materials, including aggregates, cement, admixtures, and supplementary cementitious materials.
• Equipment and Facility Management
  • Ensure all laboratory equipment is properly maintained, calibrated, and certified.
  • Manage laboratory inventory, consumables, and testing supplies.
  • Recommend equipment improvements, repairs, replacements, or upgrades as needed.
  • Maintain digital and physical testing records in accordance with applicable requirements.

Requirements

• Three to five years of concrete testing or materials experience preferred.
• ACI Concrete Field Testing Technician certification required.
• Experience with concrete testing, concrete materials, mix designs, or laboratory operations.
• Working knowledge of ASTM, ACI, PCI, and NPCA standards and requirements applicable to concrete.
• Demonstrated ability to supervise, train, and develop employees.
• Strong organizational, analytical, communication, and documentation skills.
• Hands-on concrete mix-design and trial-batching experience preferred.

Benefits

Eligible full-time employees may participate in medical, dental, vision, life-insurance, paid-time-off, paid-holiday, and 401(k) programs, subject to each plan’s terms, eligibility requirements, and applicable waiting periods.

Working Conditions

• Indoor/outdoor precast plant or construction yard environment.
• Exposure to noise, dust, heavy machinery, and varying weather conditions.
• Ability to stand and walk for extended periods throughout the workday (8–10+ hours).
• Ability to work in a heavy industrial, manufacturing, or outdoor environment with exposure to varying weather conditions.
• Must be able to lift, push, pull, and carry up to 50 pounds on a regular basis.
• Ability to frequently bend, stoop, kneel, crouch, and climb as required in a production setting.
• Ability to safely navigate uneven surfaces, production floors, and casting bed areas.
• Must be able to wear and properly use required Personal Protective Equipment (PPE), including hard hat, safety glasses, steel/composite toe boots, gloves, and hearing protection.
• Ability to work in environments with exposure to dust, noise, vibrations, and moving mechanical equipment.
• Must be able to visually inspect work areas, equipment, and product quality (close and distance vision required).
• Ability to hear and communicate effectively in a high-noise production environment.
• Must be able to respond quickly to alarms, hazards, or safety incidents.
• Ability to climb ladders and access elevated work areas when needed.
• Capability to perform physical tasks safely while maintaining awareness of surroundings and safety protocols.