Job Details

Quality Control Technician - Vinagro Materials, LLC

Position Overview

We are seeking a detail-oriented and motivated Quality Control Technician to support our construction materials testing and quality assurance operations. This role is responsible for ensuring the quality and compliance of hot mix asphalt (HMA), Portland cement concrete, aggregates, and soils through both laboratory and field testing. The ideal candidate will have hands-on experience in construction materials testing and a strong understanding of industry standards and certifications.

Key Responsibilities

Laboratory Testing & Analysis

• Perform sieve analysis on aggregates and soils to determine gradation and compliance with specifications
• Conduct laboratory testing of HMA specimens, including:
• Asphalt binder content using ignition oven
• Bulk specific gravity (SG) of HMA
• Maximum theoretical specific gravity of HMA
• Density testing using Superpave gyratory compactor
• Perform Proctor compaction tests on soil samples
• Conduct fine and coarse aggregate specific gravity testing
• Maintain accurate, organized, and up-to-date lab reports, logs, and graphical data

Field Testing

• Perform quality control testing on ready-mix concrete, including:
• Slump testing
• Air content measurement
• Temperature checks
• Unit weight determination
• Monitor and document field conditions to ensure compliance with project specifications

Project Monitoring & Compliance

• Support quality assurance efforts on DOT and FAA projects as required
• Ensure materials and processes meet applicable regulatory and project standards
• Communicate test results and quality concerns to project teams and supervisors

Quarry Operations Support

• Monitor basic crushing and processing operations
• Conduct sieve analysis and quality checks on produced aggregates
• Assist in maintaining consistent material quality from quarry production

Preferred Qualifications

• Minimum 3 years of experience in construction materials testing and/or quality control within the construction industry
• Experience with ready-mix concrete, hot mix asphalt, and soil testing procedures

Certifications (Preferred)

• NETTCP HMA Plant Certification
• NETTCP Paving Inspector Certification
• NETTCP Concrete Technician Certification
• ACI Concrete Field Testing Technician Grade I Certification

Skills & Competencies

• Strong attention to detail and accuracy in testing and reporting
• Ability to interpret technical specifications and test results
• Excellent organizational and documentation skills
• Ability to work both independently and as part of a team
• Strong communication skills for coordination with field and project personnel

Vinagro Materials, LLC and JR Vinagro are equal opportunity employers